David K. Joyce

Latest Additions

Below are the most recent additions to my specimens database. Click on any of the thumbnails to view a larger image of the specimen.

All prices in Canadian dollars. For payment in US$, deduct 18% or multiply by 0.82.

 

Item #28008 Quartz 3.7x3.1x2.5 cm Largest Crystal Size: as above $75.00 Pilot Virginia, USA RTD A doubly terminated, parallel growth crystals with a few extra crystals attached to one side. No obvious point of attachment. From a road cut! Excellent!	Item #28005 Fluorapatite 3.6x2.1x1.6 cm Largest Crystal Size: as above $65.00 Aldeia Do Eme Conselheira Pena, Minas Gerais Brazil RTD A unique extremely hoppered fluorapatite crystal from this pegmatite deposit. Hoppered growth like this is usually caused by very rapid crystal growth. Excellent example!	Item #28004 Wulfenite, Mimetite 5.3x5.1x2.9 cm Largest Crystal Size: w-5mm $65.00 Ojuela Mine Mapimi, Durango Mexico RTD Loads of botryoidal, green mimetite and prismatic, yellow-orange wulfenite crystals all over this piece. Some bruising but still looks great and a nice association piece!	Item #28002 Pyromorphite 4.7x2.6x1.3 cm Largest Crystal Size: as above $295.00 Bad Ems Germany RTD A curved, parallel group of pyromorphite crystals. A classic German mineral specimen. A little bruising but still very nice!
Item #28000 Fluorapatite, Albite 4.9x1.8x1.7 cm Largest Crystal Size: 6mm $45.00 Foote Mine Cleveland County North Carolina, USA RTD Really nice crystals of pinkish fluorapatite showing a tiny prism face and the morphology dominated by the pyramid. Unusual for apatite!! Interesting!	Item #27996 Pyromorphite 2.5x2.3x1.7 cm Largest Crystal Size: 11mm $210.00 Les Farges Mine Ussel France RTD A wonderful cluster of barrel-shaped pyromorphite crystals with that peculiar green colour typical of pyromorphite from Les Farges. The cluster looks great and is an excellent example!	Item #27994 Pyrite, ps. Marcasite 9.6x7.5 cm Largest Crystal Size: 92mm $120.00 Nanisivik Mine Baffin Island Northwest Territories, Canada RTD This piece is one large pseudomorph of pyrite after marcasite with oriented overgrowths of pyrite on the pseudomorph! Kind of like an armour-plated marcasite crystal! Excellent luster. Stands perfectly for display!	Item #27993 Azurite, Malachite 5.5x4.0x3.2 cm Largest Crystal Size: 5mm $195.00 Copper Queen Mine Bisbee, Cochise Co. Arizona, USA RTD This mound of gossanous matrix is covered with a black compound, perhaps a manganese oxide. This in turn is heavily speckled with small 1mm tufts of green, acicular malachite crystals. Concentrated, in a number of spots are deep blue, bladed, gorgeous azurite crystals. Nice piece from one of the greatest mineral localities of all time!
Item #27991 Stibnite 7.8x4.7x4.6 cm Largest Crystal Size: 24mm $180.00 Baia Sprie Romania RTD This specimen is a cluster of stout, well terminated stibnite crystals from one of the most famous localities for this mineral. There are a couple of crystals missing but that is not very noticeable. Displays very well!	Item #27990 Wulfenite, Willemite 7.8x5.3x3.5 cm Largest Crystal Size: 7.5mm $45.00 Red Cloud Mine La Paz County Arizona, USA RTD The top of this specimen has a couple of well formed, tabular, orange wulfenite crystals, associated with ting, prismatic crystals of willemite. Such great crystals of wulfenite from this famous mine!	Item #27989 Wulfenite, Mimetite 5.4x3.7x2.5 cm Largest Crystal Size: 5mm $45.00 Red Cloud Mine La Paz County Arizona, USA RTD The cavity on the top of this specimen has a number of sharp, tabular, orange-red wulfenite crystals in it. Of particular interest is the elongated habit of some of the crystals. As well, the cavity is largely lined with red, prisms of mimetite. Nice!	Item #27987 Vanadinite 2.6x2.1x1.3 cm Largest Crystal Size: 4.5mm $40.00 Old Yuma Mine Tucson Arizona, USA RTD A nice little specimen showing perfect, orange-red, hexagonal prisms of lustrous vanadinite.
Item #27985 Vanadinite 2.2x2.1x0.8 cm Largest Crystal Size: 4.5mm $35.00 Pure Potential Mine La Paz County Arizona, Canada RTD A nice little specimen, representative of the very red-orange vanadinite from the Pure Potential Mine. Simple hexagonal prisms with pinacoid termination and slight beveling pyramid faces.	Item #27984 Vanadinite 4.4x3.8x2.7 cm Largest Crystal Size: 20mm $65.00 Touissit Bou Beker Morocco RTD A cluster of very large, beige, vanadinite crystals from this famous area of Morocco. The crystals show hexagonal outline with flat terminations. Dense!!	Item #27982 Wulfenite, Willemite 9.3x6.4x5.2 cm Largest Crystal Size: 7.5mm $75.00 Red Cloud Mine La Paz County Arizona, USA RTD Some very nice, well formed orangey wulfenite crystals on tis specimen, along with small elongated crystal bundles of willemite, that fluoresces green. Classic AZ!	Item #27980 Pyromorphite 1.9x1.8x1.3 cm Largest Crystal Size: 12mm $85.00 Society Girl Mine Moyie British Columbia, Canada RTD You know how I am always whining that Canada has no secondary minerals because of the last ice age? Well, there are very few exceptions. One is the Society Girl Mine at Moyie, British Columbia. This specimen of excellent pyromorphite crystals show a cluster of barrel-shaped hexagonal crystals with slightly concave pinacoid terminations. A very old, long closed mine. These specimens were collected in the 1970's and it is unlikely that there will ever be more.
Item #27979 Mimetite, Calcite 4.6x4.2x2.8 cm Largest Crystal Size: 6mm $45.00 Santa Eulalia Aquiles Serdan, Chihuahua Mexico RTD This specimen is, essentially a cavity of composite mimetite crystals. If you look carefully, the crystals are composed of, sharp, stepped pyramidal and prismatic faces but they appear botryoidal. Some white calcite crystals at the bottom of the cavity. Very nice specimen from this famous mining area!	Item #27977 Vanadinite 8.3x4.4x2.0 cm Largest Crystal Size: 5.5mm $150.00 Old Yuma Mine Pima County Arizona, USA RTD Much of the front of this calcite vein-matrix is covered by stout, lustrous hexagonal prismatic crystals of deep orange-red vanadinite. The crystals show the prism as the dominant face with a pinacoid termination with beveling pyramid. This locality is now included in a national monument. Looks great!	Item #27976 Vanadinite, Calcite 7.0x4.6x2.7 cm Largest Crystal Size: 5mm $160.00 Old Yuma Mine Pima County Arizona, USA RTD Most of this matrix, particularly the top, both front and back is covered with sparkling red-orange, hexagonal crystals of vanadinite. The crystals are bright and show the prism and pinacoid, with a small pyramidal face truncating the pinacoid. Long closed mine, now in a National Monument. Sweet!	Item #27973 Magnetite 7.8x7.0x3.7 cm Largest Crystal Size: 20mm $45.00 Bentley Lake Occurence Bancroft, Hastings County Ontario, Canada A couple of fairly well formed, simple octahedra of magnetite are nicely exposed in the middle of this calcite vein-dyke matrix. Shows well.
Item #27972 Magnetite 6.5x4.5x5.3 cm Largest Crystal Size: 23mm $40.00 Bentley Lake Occurrence Bancroft, Hastings County Ontario, Canada A fairly well-shaped, simple octahedron attached to wall-rock from the calcite vein-dyke system above the Faraday Mine. Displays well!	Item #27966 Fluorapophyllite, Marcasite 6.5x5.0x2.0 cm Largest Crystal Size: 15mm $65.00 Gaspe Copper Mine Murdochville Quebec, Canada A flat plate of sharp, apophyllite with a pseudo-cube-octahedral crystal habit. The crystals have a greyish appearance because of the zoned inclusions of tiny crystals of what I believe are marcasite crystals, although could be pyrite. Looks great! From a giant old copper mine, now decades closed.	Item #27963 Sphalerite, Calcite, Quartz 4.5x4.4x1.8 cm Largest Crystal Size: 6mm $65.00 Rogers Farm Perth Ontario, Canada Very sharp larger and more complex smaller, dark brown sphalerite crystals line much of this wide, flat vug, along with smaller calcite and quartz crystals. Unusual location!	Item #27962 Almandine, Biotite 5.7x3.9x4.3 cm Largest Crystal Size: 42mm $65.00 River Valley Dana Township Ontario, Canada One larger and on smaller almandine crystals with some biotite mica attached to the bottom. The big crystal mostly shows the dodecahedron but has trapezohedral faces modifying the edges. Deep, deep red!
Item #27961 Gilsonite 4.42.8x3.0 cm Largest Crystal Size: n/a $65.00 Steetley Quarry (Lafarge) Wentworth County Ontario, Canada Here is an interesting one. It is a glob of hard, hydrocarbon sitting in a vug of tiny calcite or dolomite crystals. The label says "gilsonite" and it may well be. I do not know what separated the various hydrocarbons like this from each other. Interesting and unique!	Item #27958 Nickeline, Safflorite 8.8x5.3x1.4 cm Largest Crystal Size: n/a $55.00 Cobalt Ontario, Canada No silver in this one, just rich lobular aggregates of nickeline and spikey, round groups of safflorite crystals. There is also a darker phase in the nickeline but I don't know what it is. I expect rammelsbergite. Dense!	Item #27957 Silver, Nickeline, Breithauptite 7.4x5.4x1.5 cm Largest Crystal Size: n/a $85.00 Hudson Bay Mine Cobalt Ontario, Canada This specimen of silver and arsenides is sawn on one side to reveal the interesting mineralogical textures and rough on the other side. It is composed of Pl;umose growths of nickeline with areas of pink-metallic breithauptite. Of course very thick rich stringers and veinlets of native silver cut through the arsenides and small amount of dolomite. Classic old high grade from Cobalt!	Item #27952 Quartz 4.8x4.6x3.0 cm Largest Crystal Size: 48mm $45.00 Kebec Crystal Mine Lawrenceville Quebec, Canada A singly terminated crystal with a couple of smaller crystals attached to one side. Nice modifying face between one of the rhobohedral faces and a prism face. Nice example!
Item #27950 Chrysotile 8.5x7.4x4.0 cm Largest Crystal Size: 28mm $85.00 Mt. Belvedere Eden Mills Vermont, USA A superb vein of this unusual and much maligned mineral cuts across the top of a serpentine matrix. The fibrous crystals are up to 28mm long and a beautiful green in the intact part of the vein. Excellent example!	Item #27948 Grossular 12.5x9.5x4.5 cm Largest Crystal Size: 2mm $75.00 Jeffrey Mine Asbestos (Val des Sources) Quebec, Canada Part of the top of this brecciated, chromium-rich, rodingite matrix is covered with light green dodecahedral grossular crystals. An unusual form of grossular from the Jeffrey Mine.	Item #27944 Grossular 4.4x4.1x3.0 cm Largest Crystal Size: 1.5mm $55.00 Jeffrey Mine Asbestos (Val des Sources) Quebec, Canada Two sides of this solid grossular specimen are covered with small, sparkling, pink grossular crystals. There is also some white prehnite encrusting part of the grossular crystals. One of the less common colours of grossular garnets at the Jeffrey Mine. Looks great!	Item #27943 Prehnite 6.7x6.0x2.9 cm Largest Crystal Size: 23mm $85.00 Jeffrey Mine Asbestos (Val des Sources) Quebec, Canada This plate has several, light, waxy-green prehnite crystals in the middle. The crystals are HUGE for this mineral being up to 23mm in length and 15mm on-edge in square cross section. Excellent prehnite!
Item #27938 Zircon 2.4x2.1x1.3 cm Largest Crystal Size: 9mm $45.00 Kipawa Alkaline Complex Sheffield Lake Quebec, Canada A sharp, doubly terminated zircon crystal is well exposed on the front of this amphibole matrix. The brick-red crystal shows a square prism, terminated by a simple pyramid. Nice!	Item #27935 Grossular, Pectolite 9.4x5.4x4.0 cm Largest Crystal Size: 3mm $65.00 Eden Mills Vermont, USA Much of the top of this rodingite matrix is covered with red-orange dodecahedra of grossular garnet. The light coloured mineral that you can see are sharp crystals of white pectolite draped over some of the grossulars. This is NOT from Jeffrey Mine, of course but it is from an asbestos mine and so I thought I'd include it here for people interested.	Item #27931 Chrysocolla, ps malachite 8.0x5.3x4.3 cm Largest Crystal Size: 6mm botryoids $140.00 Planet Mine La Paz County Arizona, USA This is an eye-catching, vibrant specimen! The light and dark blue hemispheres of chrysocolla pseudomorphed after malachite really contrast against the dark brown iron oxide-rich matrix. Displays JUST like this.	Item #27930 Chrysocolla, ps Malachite 5.7x4.3x2.4 cm Largest Crystal Size: 3mm botryoids $45.00 Planet Mine La Paz County Arizona, USA The top of this iron oxide matrix has smooth, dark, green-blue hemispheres of chrysocolla scattered around on it. The chrysocolla hemispheres are actually pseudos after malachite! Looks great.
Item #27929 Hemimorphite 6.7x6.4x4.5 cm Largest Crystal Size: n/a $140.00 79 Mine Gila County Arizona, USA The front and top of this solid matrix is almost totally covered by light blue botryoidal hemimorphite. The botryoids are composed of light blue, radiating crystals of hemimorphite. Attractive specimen of this habit that exhibits, naturally, perfectly.	Item #27928 Hemimorphite 7.8x7.2x3.7 cm Largest Crystal Size: botryoids up to 11mm dia. $75.00 79 Mine Gila County Arizona, USA A series of openings in this dark oxidized ore matrix is home to light blue botryoidal hemimorphite, surrounded by colourless crystals of hemimorphite. An excellent example that looks great!	Item #27927 Smithsonite, Aurichalcite 9.4x6.0x6.5 cm Largest Crystal Size: s-2mm $65.00 Silver Bill Mine Gleeson Arizona, USA This is an unusual specimen from an unusual locality! It shows a couple of hemispheres, the largest 9mm diameter, of acicular, light blue aurichalcite in a vug, mostly lined with rounded smithsonite crystals. The smithsonite is colourless and sharp, albeit small. The matrix is very dense and I expect it is composed of smithsonite. Nice!	Item #27926 Hemimorphite 6.7x5.1x5.8 cm Largest Crystal Size: n/a $65.00 79 Mine Gila County Arizona, USA The cavity that composes most of this specimen is lined with light blue, botryoidal hemimorphite from the 79 Mine. The hemimorphite is actually, tightly packed crystals that have formed the botryoids. Sawn on right side but not noticeable. Displays just like this!
Item #27925 Chrysocolla, ps Malachite 10.5x7.2x7.0 cm Largest Crystal Size: up to 7mm botryoids. $65.00 Planet Mine La Paz County Arizona, USA This silicified matrix is cut through by a number of chambers that are lined with natroalunite. On the natroalunite are greenish-blue pseudomorphs of chrysocolla after malachite. As w3ell, most of the botryoids have microcrystals of a light green mineral on them, likely malachite. Interesting and great looking!	Item #27924 Hemimorphite 7.4x4.4x2.8 cm Largest Crystal Size: n/a $65.00 79 Mine Gila County USA The cavity on the top of this piece is largely lined with light-blue, botryoidal hemimorphite. The hemispheres are mostly 8mm or so across and are radiating clusters of tightly packed hemimorphite crystals. Great looking example of this mineral!	Item #27922 Chrysocolla, ps Malachite 5.5x3.8x2.4 cm Largest Crystal Size: 5mm botryoids $75.00 Planet Mine La Paz County Arizona, USA Much of the front nd top of this dark matrix is covered with contrasting, light blue botryoidal chrysocolla, which is a pseudomorph after malachite. Great looking piece from this remote mine!	Item #27921 Hemimorphite 7.2x4.8x4.5 cm Largest Crystal Size: n/a $75.00 79 Mine Gila County Arizona, USA A lovely specimen of light blue and white, banded hemimorphite from the "Smithsonite Room" in the lower levels of the currently accessible workings. Slight saw cut on the bottom. A handsome, nice specimen of the mineral from this great locality.
Item #27920 Hemimorphite 7.4x5.0x4.0 cm Largest Crystal Size: 11mm botryoids, 3mm crystals $65.00 79 Mine Gila County Arizona, USA There are two phases of hemimorphite on this specimen. The most obvious are the light blue hemispheres of hemimorphite which are, when examined closely, tight aggregates of radiating crystals. The sparkling colourless crystals in the vugs are also sharp individual hemimorphite crystals. Good-looking example!	Item #27915 Lazaraskeite 2.5cm cm Largest Crystal Size: micro $105.00 Western Santa Catalina Mountains Oro Valley Arizona, Canada Loads of sparkling, gemmy lazaraskeite crystals in individual crystals clusters and druses cover much of this specimen. Beautiful example of a rare mineral! B156	Item #27914 Lazaraskeite 1.6cm cm Largest Crystal Size: micro $105.00 Western Santa Catalina Mountains Oro Valley Arizona, USA Many, many druses and clusters of gemmy, light blue lazaraskeite crystals cover much of the sides of this piece. From very tiny crystals to larger. B172	Item #27913 Lazaraskeite 2.8cm cm Largest Crystal Size: micro $105.00 Western Santa Catalina Mountains Oro Valley Arizona, USA Many many clusters of thin, gemmy blue to almost acicular white lazaraskeite crystals are scattered across the front of this piece. Different! B171
Item #27912 Lazaraskeite 3.1cm cm Largest Crystal Size: micro $105.00 Western Santa Catalina Mountains Oro Valley Arizona, USA Many light blue, gemmy crystals of lazaraskeite in druses and clusters are richly coating the front and parts of the sides of this specimen. Lots to look at! B170	Item #27911 Lazaraskeite 2.9cm cm Largest Crystal Size: micro $125.00 Western Santa Catalina Mountains Oro Valley Arizona, USA All sides of this decomposed rock have loads of clusters and individual crystals of gemmy-blue lazaraskeite on them. Lots to look at! A113	Item #27910 Lazaraskeite 24mm cm Largest Crystal Size: micro $125.00 Western Santa Catalina Mountains Oro Valley Arizona, USA Many, many beautiful clusters of light blue, gemmy lazaraskeite crystals are scattered around the top of this microcline matrix. Excellent crystals! A112	Item #27909 Lazaraskeite 2.9cm cm Largest Crystal Size: micro $160.00 Western Santa Catalina Mountains Oro Valley Arizona, USA Wow! This is one of the bst specimens that I have seen! Many great clusters of pointy-terminated, light blue crystals of lazaraskeite all over the top of this specimen. Amazing for a new, rare mineral! A+115
Item #27908 Lazaraskeite 2.0cm cm Largest Crystal Size: micro $150.00 Western Santa Catalina Mountains Oro Valley Arizona, USA Wow! lots of clusters of gemmy-blue, prismatic lazaraskeite crystals on this specimen. All over it. Very blue, gemmy, photogenic crystals! A+114	Item #27907 Lazaraskeite 3.5 cm Largest Crystal Size: micro $125.00 Western Santa Catalina Mountains Oro Valley Arizona, USA Lots of clusters of gemmy-blue, prismatic lazaraskeite on this matrix. Lots to photograph! A+111	Item #27906 Lazaraskeite 2.9cm cm Largest Crystal Size: micro $125.00 Western Santa Catalina Mountains Oro Valley Arizona, USA Loads of light blue, prismatic to acicular lazaraskeite crystals are present on the top of this fragment. Lots to look at! A110	Item #27905 Lazaraskeite 2.3cm cm Largest Crystal Size: micro $150.00 Western Santa Catalina Mountains Oro Valley Arizona, USA The front and the sides of this specimen have many excellent, clusters of prismatic, well terminated lazaraskeite crystals. Beautiful! A+109
Item #27904 Lazaraskeite 3.0cm cm Largest Crystal Size: micro $160.00 Western Santa Catalina Mountains Oro Valley Arizona, USA Loads of gemmy-blue, prismatic crystals in radiating clusters and bundles are richly distributed on the top and sides of this matrix. Lots to look at! Bigger than average crystals and very photogenic! A-108	Item #27903 Lazaraskeite, Muscovite 2.9cm cm Largest Crystal Size: micro $150.00 Western Santa Catalina Mountains Oro Valley Arizona, USA The top of this specimen has many, very gemmy, sharp-prismatic crystals of lazaraskeite, as well as sort of radiating, acicular crystals formed between muscovite crystals cleavage planes. Excellent example! A-107	Item #27902 Lazaraskeite 3.2cm cm Largest Crystal Size: micro $150.00 Western Santa Catalina Mountains Oro Valley Arizona, USA The top of this 3.2cm rock fragment is largely covered with clusters of light blue, divergent clusters of gemmy-blue lazaraskeite. Superb! A-106	Item #27899 Dravite, Clintonite 6.4x3.9x3.4 cm Largest Crystal Size: as above $75.00 An Pho Quarry Luc Yen, YenBai Vietnam THIS is a nice crystal! It is a very well formed, doubly terminated dravite crystal with bits of clintonite attached. There are just a couple of small missing bits and otherwise all of the faces are intact. The terminations are nice three-faced trigonal forms and there appears to be A couple of prismatic forms. Very nice crystal from an unusual locality.
Item #27898 Magnetite, Calcite 6.2x5.2x4.2 cm Largest Crystal Size: 31mm $65.00 Bentley Lake Occurance Bancroft, Hastings County Ontario, Canada A nice example of the magnetite in calcite vein-dyke occurrence at Bentley Lake, near the old faraday Mine. This piece shows a couple of octahedral magnetite crystals embedded in creamy-white calcite. A classic Grenville Geological Province specimen! Displays well.	Item #27896 Dravite 9.5x6.5x4.6 cm Largest Crystal Size: as above $140.00 Yinnietharra Upper Gascoyne, WA Australia Here is a rather large and extremely well developed dravite crystal from this famous area. The crystal has simple trigonal terminations on each end and several trigonal prism forms. Almost no damage or chipping! Beautiful crystal.	Item #27895 Clinoatacamite, Gypsum, Quartz 7.1x6.3x3.9 cm Largest Crystal Size: 2mm $85.00 Lily Mine Pisco Umay Peru Here is an exemplary specimen of this relatively rare mineral. The cavity in the top of this specimen is a quartz crystal-lined cavity that is sprinkled liberally, and clustered heavily at one end, with dark, emerald-green clinoatacamite crystals. These crystals are very sharp and excellent for the mineral. As well, there are some gypsum crystals in the cavity. Displays well.	Item #27894 Ferberite, Arsonopyrite 7.6x5.6x3.5 cm Largest Crystal Size: 23mm, a-4mm $120.00 Panasqueira Mine Panasqueira Portugal This plate of sharp arsenopyrite crystals has several, black, disc-like ferberite crystals on it in two places on the top. The crystals are composed of sharp faces. The whole specimen seems to have a slight coating of chalcopyrite or similar mineral which gives the arsenopyrite crystals a marcasite-like look. They are arsenopyrite, though! Looks great! Nice example!
Item #27893 Prehnite, Diopside 9.4x7.2x3.2 cm Largest Crystal Size: p-12mm $75.00 Jeffrey Mine Asbestos (Val des Sources) Quebec, Canada This plate of crystals is composed of creamy-white, blocky prehnite crystals with gray-green diopside crystals shooting through them. The diopside crystals have feathery terminations or are broken off. The stars of the specimen are the blocky, prismatic, prehnite crystals. Very sharp with diaconal; stria. Excellent for this mineral.	Item #27890 Danburite 7.8x7.8x5.2 cm Largest Crystal Size: 67mm $75.00 Charcas San Luis Potosi Mexico This specimen is a cluster of intelocking, very light pinkish danburite crystals. Interestingly, the crystals are coated on one side by tiny, sugary, colourless scalenohedra of calcite and on the other side, no calcite, just gemmy, smooth, striated light pink danburite crystals! Two specimens in one! Great looking piece!	Item #27889 Bournonite 7.6x5.2x4.6 cm Largest Crystal Size: 18mm $65.00 Machacamarca Cornelio Saavedra, Potosi Bolivia This matrix is composed of aggregates of sphalerite with a sooty coating. On the top are several well formed "cogwheel" shaped twins of bournonite, the biggest one sort of star-shaped. The crystals are all sharp with prominent re-entrant angles that cause the cogwheel comparison. A couple of little nicks here and there. Displays very well!	Item #27887 Bustamite 5.2x4.5x3.4 cm Largest Crystal Size: 38mm $75.00 Broken Hill Mine Broken Hill, NSW Australia This specimen is composed of a bunch of brownish bustamite crystals all held together by white calcite. I expect most are touching somewhere inside the calcite. The crystals have good faces with some very flat and sharp while others rounded as is often the case with crystals formed in a calcite stew. Interesting specimen from a world-class mine-orebody!
Item #27882 Vanadinite, Calcite 7.5x4.7x2.9 cm Largest Crystal Size: 3mm $65.00 Pure Potential Mine La Paz County Arizona, USA RTD Lighter coloured, bright, vanadinite crystals from the Pure Potential mine. Gemmy crystals associated with white-colourless calcite crystals. Collected with George Godas in 1997.	Item #27878 Wulfenite. Quartz 7.1x4.1x3.0 cm Largest Crystal Size: 12mm $170.00 Pure Potential Mine La Paz County Arizona, USA RTD The red-orange crystal on the right practically glows. This very nice crystal is one of two in a quartz lined vug that fills the front of this specimen. A few willemite crystals here and there. Collected with George Godas in 1997. Displays very well.	Item #27877 Wulfenite 3.2x1.9x1.8 cm Largest Crystal Size: 6mm $45.00 Pure Potential Mine La Paz County Arizona, USA RTD Just a little guy, but nice crystals from an unusual wulfenite locality. Bob collected these specimens with George Godas in 1997.	Item #27873 Vanadinite, petrified wood 2.7x1.7x2.7 cm Largest Crystal Size: 4mm $65.00 Empire Ranch Pima County Arizona, USA RTD These specimens are a bit peculiar. Bob was exploring the back country, on the Empire Ranch and came across a petrified log that had open spaces in it, lined with well formed vanadinite crystals. This is a good example showing brown vanadinite crystals on fine grained fossilized wood.
Item #27870 Vanadinite 2.8x1.7x1.4 cm Largest Crystal Size: 3mm $35.00 Old Yuma Mine Pima County Arizona, USA RTD This small matrix is largely covered by bright, hexagonal prisms up to 3mm in length. Old AZ classic!	Item #27869 Vanadinite, Calcite 6.7x4.7x3.7 cm Largest Crystal Size: 3mm $45.00 Hamburg Mine La Paz County Arizona, USA RTD Several, sharp, deep red, gemmy vanadinite crystals are scattered around the center of this calcite crystal coated matrix. The vanadinite crystals, although small, are beautiful, hexagonal prisms with very sharp terminal caces composed of pinacoid and pyramids.	Item #27868 Vanadinite, Calcite 5.2x4.2x1.0 cm Largest Crystal Size: 4.5mm $65.00 Hamburg Mine La Paz County Arizona, USA RTD The Hamburg Mine is renowned for its gemmy, ruby-red vanadinite crystals here is a good example. The crystals re sharp hexagonal prisms with wonderful complex terminations. The crystals grew in a tight crack so the larges ones have the imprints of calcite crystals on their sides from the crystals on the other side of the crack. Nice!	Item #27867 Wulfenite 9.0x7.2x4.0 cm Largest Crystal Size: 9mm $95.00 Red Cloud Mine La Paz County Arizona, USA RTD Two, beautiful, orange-red wulfenite crystals are nicely exposed on this piece. The matrix is composed of willemite (fluorescent greenish) plus other vein minerals. Lots of black coated willemite crystals around the wulfenite. The wulfenite crystals are thick-tabular with truncated edges and small corner faces. Shows well. Collected in 1997.
Item #27858 Schorl 6.1x6.3x4.2 cm Largest Crystal Size: 45mm $195.00 Erongo Namibia RTD An excellent example of this tourmaline group mineral from the area that produces some of the best. The schorl crystals on this specimen are equant, highly lustrous and pitch-black. They are doubly terminated and hemimorphic, like most tourmalines. Stands just like this for display. Beautiful example of this mineral!	Item #27856 Fluorapatite 7.3x4.3x4.0 cm Largest Crystal Size: 57mm $250.00 Sapo Mine Goiabeira, Minas Gerais Brazil RTD The Sapo Mine is famous for the peculiar, stepped and elongated crystals of fluorapatite such as these. A one-time find m10, or so, years ago, yielded a number of fine specimens such as this one. Oddly, some of the crystals are hollow and most are terminated by a pinacoid and one pyramidal form. Very light green. Sits JUST like this for display.	Item #27855 Fluorapatite, Muscovite 5.1x2.7x2.8 cm Largest Crystal Size: 31mm $220.00 Jaguaracu Pegmatite Jaguaracu, Minas Gerais Brazil RTD An elongated cluster of doubly terminated, dark green fluorapatite with some small muscovite crystals from this famous pegmatite. The fluorapatite crystals are very well formed prisms terminated by a pinacoid and two pyramids. Nicely mounted on an acrylic base for display. Well above average for this pegmatite!!	Item #27849 Quartz, var. Ametrine 6.5x2.7x1.9 cm Largest Crystal Size: as above $120.00 Anahi Mine La Gaiba, Sandoval, Santa Cruz Bolivia RTD An etched crystal of "ametrine, showing about one third as citrine and the rest as amethyst. I expect that this is probably a shard of a once larger crystal and reflects just a couple of the zones. Very interesting piece. Could cut several nice ametrine gems or just be enjoyed for the mineralogical curiosity that it is!
Item #27845 Quartz, var. Chalcedony, opal 6.2x3.1x3.9 cm Largest Crystal Size: n/a $65.00 Deer Creek Willcox Arizona, USA RTD There is an area north of Willcox, called Deer Creek where an unusual type of silica forms. In fractures between basalt fragments, silica in the form of white chalcedony, brownish chalcedony , white opal and quartz crystals form. The brownish chalcedony can have an odd iridescence, when ground and polished the right way. Then is it referred to as "Fire Agate". This piece may have this play of light. The white opal fluoresces a bright green. The back of the specimen is a sort of geode lined with drusy quartz crystals. Very nice example collected by Dr. Downs in 2009.	Item #27838 Babingtonite, Prehnite, Quartz 5.2x4.2x2.8 cm Largest Crystal Size: b-17mm, p-15mm, q27mm $225.00 Qiaojia Yunnan China RTD A really nice miniature specimen showing a sharp, composite babingtonite crystal sitting atop a cluster of sharp, colourless quartz crystals and light green hemispheres of prehnite. The hemispheres are actually a darker green than shows in the photo. Wonderful babingtonite crystal! Great looking specimen!	Item #27834 Aegirine, Microcline, Parisite ps. 6.6x7.3x3.1 cm Largest Crystal Size: 31mm $230.00 Mount Malosa Zomba Malawi RTD A stunning cluster of pitch-black aegirine crystals associated with creamy-whitish microcline crystals. The aegirine crystals are amazingly sharp prisms with terminations that are steep pyramids. There are also some pseudomorphs on the speicmen that were parisite crystals that have been replaced by a mixture of Ce-rich rare earth minerals. Beautiful specimen! Displays very well! Way better than in the photographs.	Item #27833 Mimetite 6.3x3.6x3.5 cm Largest Crystal Size: 11mm $280.00 Pingtouling Mine Liannan, Guandong China RTD An interesting and unusual mimetite! The crystals on this specimen are capped with a lustrous, sharp pinacoidal termination while the prism faces are stepped, sort of skeletal in form. Orangey crystals on solid, iron oxides matrix. Displays very well, just as shown.
Item #27831 Fluorapatite 3.9x2.6x2.4 cm Largest Crystal Size: as above $975.00 Shengus Mine Gilgit-Baltistan Pakistan RTD This amazing fluorapatite crystal is a single crystal with some stepped growth. It is a short hexagonal prism, terminated by first and second order pyramid forms. The crystal is largely gemmy, with some cloudiness near the middle portions. Near the bottom, there are small amounts of some very fine inclusions of what is probably fine, fibrous byssolite inclusions and some tiny, green, platy crystals of what is probably chlorite. Excellent example of this mineral with no colouring impurities!	Item #27820 Topaz, Quartz, Albite 9.5x8.0x5.3 cm Largest Crystal Size: t-29mm, Qu-33mm $750.00 Sakangyi, Mogok Pwin-Oo-Lwin, Mandalay Myanmar This mound of bladed, white albite crystals has grayish, well formed quartz crystals protruding from it. At the center-right are several topaz crystals, one being much larger than the others. It is 27mm long and 17mm wide with excellent faces. The topaz crystals are a very light, sherry colour. The other topaz crystals are similar but smaller! Nice example from this famous pegmatite region!	Item #27818 Galena, Seligmannite, Tetrahedrite, Quartz 8.0x5.0x5.8 cm Largest Crystal Size: g-27mm, sel0.5mm $75.00 La Palomo Mine Huachocolpa, Huancavelica Peru A large cluster of cube-octahedral galena crystals encrusted with tiny quartz and sharp, prismatic seligmannite crystals. The seligmannite crystals sparkle and are easily seen but best looked at with a loupe or microscope. Rare mineral!! Also some small, sharp, tetrahedrite crystals.	Item #27815 Suolunite 5.6x3.8x4.3 cm Largest Crystal Size: n/a $75.00 Black Lake Mine Thetford Mines Quebec, Canada A curved fragment of light lavender suolunite showing crystal faces across the entire width. Sits nicely for display.
Item #27814 Pyrite 5.3x3.7x4.0 cm Largest Crystal Size: 27mm $45.00 Nanisivik Mine Baffin Island Nunavut, Canada This piece shows complex pyrite crystals that are, in fact, oriented overgrowths on marcasite pseudomorphs after marcasite. Some bruising but in fairly good shape! Displays very well!	Item #27811 Suolunite 7.3x3.8x3.7 cm Largest Crystal Size: 35mm $75.00 Black Lake Mine Thetford Mines Quebec, Canada A cross sectional fragment of a thick botryoidal growth of this unusual mineral. The top is the surface expression of the mineral habit. Very light lavender.	Item #27810 Suolunite 6.1x4.8x2.3 cm Largest Crystal Size: n/a $85.00 Black Lake Mine Thetford Mines Quebec, Canada A concave plate of flat botryoids of light lavender suolunite. A similar look to some prehnite. Fairly rare!	Item #27808 Neotocite, Pyrolusite 7.8x5.0x5.3 cm Largest Crystal Size: n/a $55.00 Taylor Mine Alberta Michigan, USA This specimen shows a band of dark quartz passing through iron-manganese oxides. The oxides on either side of the quartz have been partially altered to neotocite. Interestingly, the neotocite on one side has pyrolusite crystals cutting through it. Interesting!
Item #27806 Neotocite 9.0x6.0x4.7 cm Largest Crystal Size: n/a $65.00 Taylor Mine Alberta Michigan, USA This is a fragment of bedded manganese-iron oxide and quartz mineralization. Particularly at one end, there is lots of dark brown, glassy-resinous neotocite.	Item #27805 Neotocite, Pyrolusite 7.6x7.1x5.7 cm Largest Crystal Size: n/a $75.00 Taylor Mine Alberta Michigan, USA This specimen shows a quartz bed or vein that passes through iron-manganese oxides. The oxides are laced through with seams of thick, dark brown neotocite. Interestingly, at one end of the specimen there are pyrolusite crystals embedded in the neotocite.	Item #27802 Macfallite, Pyrolusite 9.7x9.0x5.0 cm Largest Crystal Size: 2mm $75.00 Manganese Mine Copper Harbor Michigan, USA Lots of macfallite in this specimen of calcite, macfallite and pyrolusite. If you etch some of the calcite off with vinegar or weak acid, there will be loads of nice macfallite crystals to view.	Item #27801 Macfallite, pyrolusite 9.2x8.2x4.2 cm Largest Crystal Size: 2mm $75.00 Manganese Mine Copper Harbor Michigan, USA This specimen is a mass of pyrolusite and calcite with lots of areas of red-brown macfallite in the pyrolusite and calcite. Some of the calcite could be etched away to reveal really nice macfallite crystals. There are already some open vugs of the minerals with excellent crystals. Rich!
Item #27798 Stilbite 6.5x5.8x5.0 cm Largest Crystal Size: 52mm $75.00 Pune Maharashtra India An interesting combination of a couple of stilbite "bow ties" and smaller single crystals .Stands perfectly!	Item #27797 Apophyllite 6.9x3.3x2.2 cm Largest Crystal Size: 16mm $35.00 Pune Maharshtra India A long/tall string of colourless, well formed apophyllite crystals. The crystals are prismatic with steep terminal faces.	Item #27796 Stilbite 5.3x4.7x3.3 cm Largest Crystal Size: 14mm $35.00 Cape D'Or Bay of Fundy Nova Scotia, Canada A very nice looking, cluster of stilbite crystals, nicely mounted on a labelled acrylic base. Shows well.	Item #27795 Apophyllite, Stilbite 3.8x3.3x1.5 cm Largest Crystal Size: 20mm $35.00 Lanavala Pune India A very pretty, green apophyllite crystal nestled amongst white stilbite blades. Nice example!