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 #28330 Fluorite, Baryte 7.3x4.8x2.7 cm Largest Crystal Size: fl-17mm, b-10mm $55.00 Rogers Mine Madoc Ontario, Canada This piece is composed of "crested" baryte and greyish, cubic fluorite, a common combination in the Madoc Mines. Pretty nice looking ore! The fluorite was the ore mineral at this mine many decades ago!	Item #28329 Dolomite, var. Ferroan 7.1x4.8x4.2 cm Largest Crystal Size: 15mm $40.00 Restigouche Mine Bathurst New Brunswick, Canada The top of this dolomite matrix is covered with light chocololate brown rhombohedra of an iron rich dolomite. Tiny chalcopyrite crystals are also scattered on the dolomite crystals. Unusual locality!	Item #28327 Fluorite 4.8x4.7x4.2 cm Largest Crystal Size: as above $65.00 Rogers Mine Madoc Ontario, Canada Here is a single, half-cube of light green, gemmy fluorite from this famous old mine. The Rogers Mine was a fluorite mine many decades ago. The crystal shows, sort of a mosaic of offset faces on the cube face. As well, there are small octahedral modifications at the corner of the cube. Nice one!	Item #28326 Calcite, Dolomite 7.2x4.5x4.0 cm Largest Crystal Size: 23mm $40.00 S. Roberts Pit, Steep Rock Iron Mine Atikokan Ontario, Canada A number of creamy white, very low angle rhombs of calcite sit on a bed of much smaller, reddish, probably ferroan, dolomite. The razor-sharp calcite crystals have some bits of clay attached here and there. Good looking piece!
Item #28325 Titanite 9.3x7.3x3.6 cm Largest Crystal Size: 47mm $85.00 Tory Hill Ontario, Canada A sharp, sort of curved, dark, chocolate-brown titanite crystal perfectly exposed in creamy calcite. I expect that the specimen is from Titanite Hill but I don't really know. Looks great!	Item #28321 Grossular, Vesuvianite, Diopside 8.4x4.3x3.5 cm Largest Crystal Size: gr-9mm, v3mm, d-7mm $40.00 York River Skarn Zone Bancroft Ontario, Canada The York River Skarn Zone has been closed for many years. At one time it was a favourite place to go to collect the above minerals. This specimen has been partially etched to reveal fresh crystals. Could be etched more! Interesting, classic association!	Item #28320 Corundum, var., Sapphire 6.4x2.0x2.0 cm Largest Crystal Size: 5mm $85.00 Rock Creek Granite County Montana, USA This specimen is a vial of small, gemmy, corundum fragment and crystal sections. Sweet! An unusual mineral specimen for sure.	Item #28319 Silver 5.0x1.5x1.5 cm Largest Crystal Size: 8mm $140.00 Nipissing Mine Cobalt Ontario, Canada This is an unusual specimen! It is a vial of wire silver crystals from one of the original mines in the Cobalt Mining Camp! Beautiful and unusual.
Item #28316 Bornite 6.2x6.4x2.8 cm Largest Crystal Size: n/a $45.00 Coppermine River NE of Great Bear Lake Northwest Territories, Canada The Coppermine River area was once a very prospective area for copper, due to the seemingly large amounts of native copper and other copper minerals in the area. I don't think any "coppermines" actually resulted but it remains very prospective and an interesting area geologically!	Item #28315 Sphalerite 2.9x2.9x2.8 cm Largest Crystal Size: as above $40.00 Nanisivik Mine Baffin Island Nunavut, Canada This seems to be one larger, complexly twinned crystal with smaller crystals attached. On the left side are several, more coherent sphalerite crystals. This was THE ore mineral at the Nanisivik Mine and a nice example!	Item #28314 Fluorapatite 8.4x8.8x4.5 cm Largest Crystal Size: 23mm $75.00 Cerro Mercado Durango Mexico These specimens from this amazing locality are always interesting. The matrix appears to be quartz, perhaps somewhat chalcedonic quartz that has included, gemmy, yellow-green crystals of fluorapatite. The apatite is well terminated with at least a couple classes of prism faces. Great stuff!	Item #28313 Gold 1.8x1.7x1.5 cm Largest Crystal Size: n/a $65.00 Timmins Ontario, Canada Rich globs of native gold protrude out of this quartz-vein piece from the famous Timmins gold camp. Wish I could find a vein like this!
Item #28309 Silver, Copper 2.1x1.6x0.5 cm Largest Crystal Size: n/a $55.00 Keweenaw Peninsula Michigan, USA This nugget appears to be mostly silver but I think it is about 50:50. There is a lot of copper in the lower portion and on the back. Excellent example!	Item #28308 Copper, Silver 2.1x1.3x0.6 cm Largest Crystal Size: n/a $65.00 Keweenaw Peninsula Michigan, USA This excellent silver-copper nugget appears to be 50:50 silver:copper. A really nice example from the area famous for these types of specimens!	Item #28306 Silver-Copper 1.7x1.4x0.8 cm Largest Crystal Size: n/a $55.00 Keweenaw Peninsula Michigan, USA Here is a great example of the silver-copper nuggets that occur in the Keweenaw Peninsula. Classic!	Item #28304 Scheelite, Quartz, Pyrite 4.1x3.0x2.2 cm Largest Crystal Size: n/a $45.00 Moose River Mine Halifax County Nova Scotia, Canada A fragment of scheelite bearing ore from this old gold mine. The front of the piece is sawn to best reveal the textures of the minerals, mostly scheelite, apparently fractured with quartz and pyrite between. Very fluorescent!
Item #28303 Scheelite, Quartz, Pyrite 6.5x4.9x2.0 cm Largest Crystal Size: n/a $75.00 Moose River Mine Halifax County Nova Scotia, Canada This appears to be a vein section of rich scheelite, with quartz and a small amount of pyrite in the scheelite. Of course the scheelite fluoresces very well!	Item #28302 Fluor-Uvite 1.6x1.8x1.2 cm Largest Crystal Size: 16mm $45.00 Dale Bush Farm Richville, St. Lawrence County New York, USA A sharp, mostly complete, singly terminated fluor-dravite crystal with a little gossanous material attached. Has a couple of crystal parts missing and one contact point. Nicely fluorescent yellow under SW U/V light.	Item #28300 Dravite 4.6x2.6x2.4 cm Largest Crystal Size: 15mm $35.00 Powers Farm Pierrepont, St. Lawrence County USA This cluster is composed of very lustrous, black (really very dark brown) dravite crystals associated with gray, fairly well formed quartz crystals. There is an area of broken crystals in the middle but there are lots of well formed, nice crystals all around.	Item #28298 Fluor-Uvite 2.7x2.6x1.9 cm Largest Crystal Size: as above $75.00 Dale Bush Farm Richville, St. Lawrence County New York, USA A well formed crystal of this unusual tourmaline group mineral from a well known locality for it. The crystal is well formed, mostly complete and is, largely doubly terminated. Fluoresces a nice yellow under SW U/V light. Nice one!
Item #28291 Smithsonite 6.3x5.6x3.8 cm Largest Crystal Size: n/a $40.00 Kelly Mine Socorro Co. New Mexico, USA The cavity on the front of this massive quartz matrix is generously endowed with smithsonite bow ties and rounded aggregates that are actually curved smithsonite crystal aggregates. Nice looking piece from a classic locality!	Item #28284 Inesite 4.2x3.7x1.7 cm Largest Crystal Size: 9mm $45.00 Wessels Mine Hotazel, Northern Cape South Africa This specimen shows two mounds of inesite crystals on a beige mineral that could be orlymanite, although the specimen has not been tested for orlymanite. A nice, small specimen from this manganese-rich mine!	Item #28281 Hematite 6.8x5.0x3.5 cm Largest Crystal Size: as above $95.00 Wessels Mine Hotazel, Northern Cape South Africa A very large, prismatic, terminated hematite crystal with a cap of tiny calcite crystals and iron oxide. The front of the crystal is well formed with lustrous crystal faces and minimal damage. The back is all massive hematite where the crystal was attached to the orebody. Impressive!	Item #28279 Smithsonite 6.5x2.6x3.2 cm Largest Crystal Size: 9mm $75.00 Tsumeb Mine Otjikoto Namibia A sharp-looking, plate of well formed, sharp, rhombohedra of smithsonite. Dense! Displays perfectly!
Item #28278 Malachite 5.4x4.1x2.2 cm Largest Crystal Size: n/a $40.00 Etoile de Congo Mine Katanga Zaire A beautiful specimen of deep-green, botryoidal malachite from one of the most famous copper mining areas of the world. The botryoids are composed of radiating, fibrous malachite with a coating of sparkling, minute malachite crystals. Looks great!	Item #28276 Siderite, Quartz, Goethite 6.9x4.5x4.5 cm Largest Crystal Size: q-2mm, s-1mm $65.00 Wheal Drea St. Just, Cornwall England This is an interesting one. There is a cavity across much of the top of the matrix that is lined with quartz crystals and then in turn heavily speckled with beautiful, elongated, trigonal crystals of siderite. There are small masses of sparkling second generation quartz crystals as well. Under the first generation of quartz cavity is lined with botryoidal goethite, brown-coloured banding, with different hues. Nice specimen from this famous old mining area!	Item #28268 Carrollite 6.5x4.0x3.7 cm Largest Crystal Size: 12mm $40.00 Kamfundwa Mine Kambove Democratic Republic of Congo The crystal that is on this matrix has been glued in place and, in fact the specimen has been manufactured. It IS a nice crystal, though, so I thought I'd offer it anyway at a reasonable price.	Item #28264 Spencerite 2.7x2.2x1.7 cm Largest Crystal Size: 18mm $65.00 HB Mine Salmo British Columbia, Canada A solid fragment of crystallized spencerite composed of compressed, lath-like crystals of this extremely rare zinc phosphate. From the type locality.
Item #28262 Carrollite, Bornite 3.8x2.6x2.9 cm Largest Crystal Size: c-8mm, b-9mm $55.00 Kamfundwa Mine Kambove Democratic Republic of Congo The crystal face of this cleaved calcite crystal has an interesting, elongated, highly lustrous carrollite crystal on it plus several misshapen bornite crystals. The carrollite crystal has mirror-like faces, some with interesting growth features/stria.	Item #28260 Carrollite, Calcite 3.9x2.0x1.8 cm Largest Crystal Size: 10mm $65.00 Kamfundwa Mine Kambove Democratic Republic of Congo One larger, sharp, silvery carrollite crystal plus several smaller ones are present on the crystal surface of this cleaved calcite crystal. The carrollite crystals are lightly striated and are speckled with tiny chalcopyrite (I think) crystals.	Item #28258 Spencerite 2.5x2.8x1.4 cm Largest Crystal Size: 20mm $75.00 HB Mine Salmo British Columbia, Canada A solid fragment of crystallized spencerite composed of compressed, lath-like crystals of this extremely rare zinc phosphate, with a crust of hemimorphite attached to one side. These deposits were actually stalactitic and cave-like deposits!. From the type locality.	Item #28257 Spencerite 2.9x3.0x1.9 cm Largest Crystal Size: 29mm $75.00 HB Mine Salmo British Columbia, Canada A solid fragment of crystallized spencerite composed of compressed, lath-like crystals of this extremely rare zinc phosphate. From the type locality.
Item #28249 Hematite, Goethite 8.0x6.5x4.5 cm Largest Crystal Size: 34mm $40.00 Steep Rock Iron Mine Atikokan Quebec, Canada This piece is a portion of a botryoid that is both hematite and goethite. It appears that the hematite has partially altered to goethite in places. It is sawn on one small side to reveal the intergrowth. Famous old, long closed mine!	Item #28244 Corundum, Biotite 5.3x3.2x2.7 cm Largest Crystal Size: 53mm $65.00 Highland Grove Haliburton County Ontario, Canada A singly terminated, tapered, hexagonal corundum crystal from this long-closed locality. The crystal may be doubly terminated but only the end of the taper is a coherent termination. Some biotite and feldspar still attached. Nice example!	Item #28243 Calcite, Galena 7.4x7.3x3.4 cm Largest Crystal Size: 36mm $65.00 Joplin Jasper Co. Missouri, USA An interesting specimen showing a brecciated, cherty limestone with several creamy-white calcite crystals formed on it. The calcite are interesting in that they are sort of scalenohedra formed fron tightly stacked rhombohedra, giving them a shaggy appearance on the faces. Nice looking from a classic location.	Item #28242 Quartz 12.2x9.5x4.1 cm Largest Crystal Size: 1mm $75.00 Okahandja Namibia Here is a different one! It is a large fragment of fine-grained cryptocrystalline quartz with a more bluish core and a cavity lined with sparkling, drusy quartz crystals. Looks great! Accompanied by an old Williams-Hildas label.
Item #28239 Schorl 3.8x2.7x2.2 cm Largest Crystal Size: as above $40.00 Altay Xin Jang China Here is an unusual one! A sharp, prismatic crystal of schorl from China. The crystal is lustrous, doubly terminated and appears to have formed in a mica schist. The terminations are similar on both ends.	Item #28236 Anhydrite, Fluorite 12.0x7.0x3.0 cm Largest Crystal Size: a-5mm, fl-8mm $85.00 Campiano Mine Grosseto, Tuscany Canada Here is a different one! This plate of crystals is covered with colourless fluorite crystals and anhydrite crystals on both sides. The anhydrite crystals are extremely sharp, pointed, platy crystals to 3mm or so, in single crystals or groups. The fluorite crystals are very clear, lustrous cubes that are stepped on the corners to form rough octahedral faces. Really nice crystals!!	Item #28235 Chalcocite, Quartz, Chalcopyrite 6.2x5.5x4.5 cm Largest Crystal Size: 7mm $55.00 Leonard Mine Butte, Silver Bow Co. Montana, Canada The front of this piece of massive sulphides is part of a vug showing cruse, hexagonal chalcocite crystals on chalcopyrite and associated with quartz crystals.	Item #28233 Copper 4.3x1.9x1.7 cm Largest Crystal Size: n/a $65.00 Keweenaw Peninsula Michigan, USA When miners of old encountered large masses of native copper in the Michigan copper mines, they could not break them up further with explosives of machinery and so chiseled the boulders down to small, manageable bits with hammer and chisel. This is such a fragment of a copper boulder in the shape of a "chisel chip". Historical!
Item #28232 Whiteite 2.1x2.1x1.4 cm Largest Crystal Size: 11mm $75.00 Rapid Creek Yukon, Canada A couple of very sharp whiteite crystals sit on top of this matrix of whiteite siderite and lazulite, along with some sharp, deep-blue lazulite crystals.	Item #28231 Copper 5.7x4.4x3.0 cm Largest Crystal Size: n/a $35.00 Central Mine Keweenaw Peninsula Michigan, USA A sheet of native copper with an interesting schiller that is attached to a fragment of basalt and sits up well for display. From the famous Central Mine!	Item #28230 Copper 5.4x4.8x1.5 cm Largest Crystal Size: 5mm $75.00 Ray Mine Gila County Arizona, USA This piece is a mesh of very sharp copper crystals ranging from spear-like twins to cubes to rounded, equant crystals. Really nice specimen from a famous copper mine!	Item #28229 Tetrahedrite, Calcite, Chalcocite 6.4x4.5x4.2 cm Largest Crystal Size: 1mm $75.00 Leonard Mine Butte, Silver Bow Co. Montana, USA This specimen is all part of an open space that is lined with small tetrahedrite crystals that have a number of white calcite scalenohedra of calcite on the sulphides. The tetrahedrite seems to be formed on chalcocite. Some of the chalcocite appears shaped like enargite and could be pseudomorphs of chalcocite after enargite crystals. Interesting piece from a classic American Locality!
Item #28227 Copper 3.9x2.0x1.8 cm Largest Crystal Size: n/a $65.00 Keweenaw Peninsula Michigan, USA This piece is solid native copper but not a natural form. It is a "chisel chip", a fragment resulting from the practice of chiseling down huge boulders of copper by miners. Really big boulders of native copper could not be crushed down in size but still had great value as copper. They are metal and so could not be blasted down in size, either. The COULD be chiseled down in size, though! This chisel chip is a result of that kind of work.	Item #28226 Copper, quartz 6.6x4.0x0.8 cm Largest Crystal Size: 1mm $65.00 Tsumeb Mine Otjikoto Namibia This piece is mostly a mesh of tiny copper crystals, in some areas, partially intergrown with white quartz fragments.	Item #28219 Calcite, Mottramite 3.1x3.0x2.4 cm Largest Crystal Size: c-7mm $40.00 Tsumeb Mine Otjikoto Namibia This specimen is a jumble of worm-like crystal aggregates of dark mottramite with sharp, rhombohedral crystals of calcite suspended in the tubes. Interesting!	Item #28213 Hematite 4.1x4.3x3.9 cm Largest Crystal Size: 33mm $120.00 Belo Horizonte Brazil One large, excellent hematite crystal is nicely presented at the front and top of this pure hematite matrix. The crystal is a flattened rhombohedron with excellent lustre and many modifying forms. It is in great shape and complete, except near the bottom where it was in contact with other crystals. Displays perfectly.
Item #28212 Mimetite 9.2x4.8x2.5 cm Largest Crystal Size: 13mm $75.00 Tsumeb Mine Otjikoto Namibia There are many, glassy, well formed, lustrous, yellow mimetite crystals formed on the top and bottom of this brown matrix. Many of the crystals are snapped off but many are intact and gorgeous gemmy, elongated crystals! Looks great, for display, as well.	Item #28210 Shattuckite 3.52.9x2.3 cm Largest Crystal Size: n/a $75.00 Kandesi Kunene Namibia The cavity on the top of this quartz fragment is lined with light blue botryoidal shattuckite that is, in fact, composed of tiny fibrous crystals of shattuckite. Nice specimen of a rare mineral!!	Item #28209 Cerussite 2.9x2.5x1.7 cm Largest Crystal Size: 21mm $75.00 Tsumeb Mine Otjikoto Namibia A well-shaped, upper half of a sixling of twinned cerussite. The crystals are whitish with small crystals of mimetite on the faces. Looks good!	Item #28206 Cerussite 2.5x2.3x1.7 cm Largest Crystal Size: as above $120.00 Tsumeb Mine Otjikoto Namibia A twinned cerussite crystal that is clear on the inside with a pure white coating of cerussite or hydrocerussite. A slight blemish on the front. Great looking classic!
Item #28205 Linarite, Malachite 6.7x6.6x3.4 cm Largest Crystal Size: l-1mm $85.00 Blanchard Mine Socorro County New Mexico, USA The top of this fluorite matrix is mostly covered with openings lined with small, sparkling crystals of deep-blue linarite, with some small tufts of malachite crystals here and there. This is a very striking specimen from this classic linarite locality!	Item #28204 Witherite 5.0x3.8x2.8 cm Largest Crystal Size: 30mm $120.00 Cave-in-Rock Hardin County Illinois, USA Here is a NICE witherite specimen! In the middle of the front of it, is a well formed, hexagonal, colourless-white, terminated, witherite crystal. There are two other well formed crystals, one on either side. Dense, just as you would expect witherite to be! Sits well for display!	Item #28203 Linarite, Baryte, Quartz 4.3x3.0x2.1 cm Largest Crystal Size: b-21mm, l-1mm $65.00 Mex-Tex Mine Garden Spring Canyon, Socorro Co. New Mexico, USA This is a nice specimen from one of the lesser known localities in Socorro Co. The matrix is totally composed of baryte, with a larger, complete, rectangular, bladed baryte crystal at the back. at the base of the quartz crystal-encrusted baryte crystal is a patch of sparkling, blue linarite crystals. Nice looking, excellent specimen!	Item #28202 Linarite, Fluorite 6.4x5.0x5.2 cm Largest Crystal Size: fl-10mm, l-1mm $65.00 Blanchard Mine Socorro County New Mexico, USA The vuggy area on the front of this matrix has two interesting area, the top opening is lined by quartz crystals and has simple, cubes of fluorite and a druse of deep-blue linarite crystals in the upper reaches. The lower opening is, largely, totally lined by linarite crystals. Interesting specimen of this paragenesis!
Item #28201 Linarite, Fluorite, Gypsum 6.3x4.4x2.0 cm Largest Crystal Size: 1mm $65.00 Blanchard Mine Socorro County New Mexico, USA The top of this specimen is mostly part of a vug that is lined by fluorite crystals that have, in turn, been partially or totally covered by bright, deep-blue, linarite crystals and white skeletal gypsum crystals. The linarite crystals actually coat the fluorite crystals nicely in some parts of the opening. Interesting and beautiful!	Item #28200 Linarite, Fluorite 4.9x4.8x3.5 cm Largest Crystal Size: 1mm $75.00 Blanchard Mine Socorro County New Mexico, USA The cavities in the top of this specimen are lined with blue, cubic fluorite crystals and on the fluorite crystals are deep, blue, highly lustrous linarite crystals. Looks great!	Item #28199 Linarite, Gypsum 9.5x6.8x6.4 cm Largest Crystal Size: 1mm $85.00 Blanchard Mine Socorro County New Mexico, USA The cavities across the top and front of this quartz-fluorite matrix are largely lined with deep blue linaraite crystals and colourless gypsum. The linarite is the main mineral of interest and is composed of sharp prismatic to skeletal blue crystals. The gypsum crystals are poorly formed but gemmy crystals. The matrix is also interesting showing different colours of fluorite and containing partially altered crystals of galena. Interesting and beautiful!	Item #28198 Cassiterite, Quartz, Tourmaline 6.2x2.1x2.2 cm Largest Crystal Size: q-52mm, c4mm $75.00 Panasqueira Mine Panasqueira Portugal There is a grouping of sharp, black cassiterite crystals associated with needle-like crystals of tourmaline on one side of this singly terminated quartz crystal. Nice example of one of the less common minerals from this famous locality!
Item #28196 Malachite, ps azurite 7.5x5.0x5.5 cm Largest Crystal Size: 10mm $120.00 Whim Creek W. Australia Australia The cavity on the top of this brecciated matrix is lined with sharp, thick-bladed malachite pseudomorphs after azurite. As well, clusters of deeper green malachite are scattered over the pseudomorphs. Nice specimen from an unusual locality, in this part of the world!	Item #28194 Opal 4.2x2.6x2.3 cm Largest Crystal Size: n/a $120.00 Walanula Andamooka Ranges, S. Australia Australia This fragment of dense ironstone has precious opal on two sides. The top side flashes gorgeous, emerald green fire while the side opal shows both red and blue-green fire. Very attractive example!	Item #28193 Opal, var Boulder Opal 5.0x3.7x1.8 cm Largest Crystal Size: n/a $65.00 Australia Australia is the locality data that I have for this piece. It is a fairly typical example of boulder opal with the fracture filling of precious opal. The opal shows nice blue and green "fire" on the left and center of the opal.	Item #28192 Scholzite Reaphook Hill Mine cm Largest Crystal Size: 4mm $65.00 Flinders Range South Australia Australia Pretty-well every open space in this gossanous matrix has loads of colourless, acicular crystals of scholzite. The scholzite crystals are well terminated and associated with black globs of a manganese or iron oxide.
Item #28191 Klebelsbergite, Stibnite 4.2x3.3x2.8 cm Largest Crystal Size: 1mm $65.00 Pereta Mine Grosseto Italy Excellent clusters of mostly colourless, acicular klebeslbergite are present throughout this specimen in cavities between heavily oxidized stibnite crystals/cleavages. Excellent example!	Item #28190 Stibnite, Calcite 5.1x3.1x3.8 cm Largest Crystal Size: 38mm $40.00 Sombrerete Zacatecas Mexico This specimen shows three sprays of lustrous stibnite, enmeshed in a 3-D cluster. The crystals are long, bladed and well formed. The stibnite crystals are partially encrusted with sharp calcite crystals. Nice example from this famous old mining area!	Item #28189 Rhodochrosite, Sphalerite 6.0x4.8x3.5 cm Largest Crystal Size: rh-1mm $75.00 South Mine Broken Hill, NSW Australia This is a different one! It is 99% massive sphalerite that has a coating of tiny, pink, sparkling rhodocrosite crystals covering the top of it! Sweet!	Item #28188 Tellurium, Quartz 4.3x3.1x2.9 cm Largest Crystal Size: 7mm cleavage $85.00 Moctezuma Mine Sonora Mexico This is a sort of nodule composed, mostly of native tellurium that has tiny quartz crystals suspended through it. The tellurium is very lustrous on the broken surfaces with a bright metallic colour. There are also tellurite minerals in porous spaces of the quartz but not good crystals. Nice example of native tellurium!
Item #28187 Ferberite, Siderite 3.7x2.3x1.4 cm Largest Crystal Size: as above $65.00 Panasqueira Mine Panasqueira Portugal A sharp, singly terminated ferberite crystal, capped by a crown of light brown curved siderite crystals. The back of the ferberite crystal is largely covered by the siderite plus many sparkling pyrite crystals. Nice specimen from this most famous of Portuguese localities!	Item #28186 Topaz 25mm crystal max cm Largest Crystal Size: 25mm $85.00 Jos Nigeria This specimen is actually composed of three topaz crystals, I assume from alluvial cassiterite mining operations near Jos, Nigeria. The crystals are slightly water worn, as you might expect, one being much less water worn than the other two. They are colourless but very gemmy! Unusual location!	Item #28185 Cuprite 5.6x5.7x3.1 cm Largest Crystal Size: 4mm $85.00 Sepon Mine Vilabouly Laos Cavities in this hard, gossanous matrix, are lined with deep red, almost black with red internal highlights, crystals of octahedral cuprite. Extremely sharp crystals, some with a light dusting of goethite. Excellent example of this copper oxide!	Item #28184 Azurite, Malachite 7.3x5.2x3.3 cm Largest Crystal Size: 1mm $85.00 Tynagh Mine County Galway Ireland Both sides of this grayish matrix has cavities lined with balls of deep blue azurite crystals, associated with malachite balls and an unknown black mineral. The azurite balls are composed of sharp 1mm or so crystals of azurite fashioned into the curved aggregates. Some of the balls are pure azurite and some have a coating of the black mineral. Nice specimen from this long closed mine.
Item #28183 Azurite, Pyromorphite 5.7x4.4x3.8 cm Largest Crystal Size: 2mm $85.00 Tynagh Mine County Galway Ireland The top of this quartz and baryte matrix shows clusters of deep-blue, lustrous azurite crystals. Beautiful! As well, there are loads of needle-like crystals of, what I'll call pyromorphite, although I am not sure. Also some fine, acicular, green, malachite! A lot of people don't realize that Ireland has had several excellent base metals mines in recent decades! Tynagh Mine was one.	Item #28182 Bertrandite, Fluorapatite, Quartz 9.5x7.5x3.3 cm Largest Crystal Size: b-3mm, fl-2mm $75.00 Harvard Mine Greenwood Maine, USA This large chunk of quartz has an area of, sort of, faden-like growths of quartz on the front-top. Between these quartz growths are lots of smaller quartz crystals sprinkled with sharp, rectangular-bladed bertrandite crystals and individuals and small groups of very light purple fluorapatite. Interesting piece from a classic Maine locality!	Item #28180 Quartz, var. Amethyst Flower 8.8x6.3x3.4 cm Largest Crystal Size: 24mm $65.00 Frederico Westphalen Rio Grande do Sul Brazil This is a famous quartz formation from this locality in Brazil. For some reason, amethyst quartz forms these beautiful "flower" shaped aggregates. This one is nicer coloured amethyst towards the center of the flower and less colourful quartz towards the edges! Nice looking!	Item #28178 Gold, Quartz, Calcite 9.2x5.6x6.5 cm Largest Crystal Size: 1.5mm $1,400.00 Olinghouse Mine Washoe County Nevada, Canada Much of the top-front of this greenish, rock matrix is covered with sharp, acicular crystals of native gold. The gold was originally in a calcite vein and some of the calcite has been etched away to reveal the gold crystals. Where the calcite has been totally removed, there are small quartz crystals on the green rock. It is delicate but can be shipped safely. Very impressive, beautiful and impressive!
Item #28176 Silver, Arsenides 15.0x9.5x2.7 cm Largest Crystal Size: n/a $65.00 Peterson Lake Mine Cobalt Ontario, Canada A portion of a brecciated vein showing rock cut through by several carbonate veins, the middle one, of which, is laced with native silver and arsenides. Interesting specimen!	Item #28175 Silver, Arsenides 10.2x9.8x5.6 cm Largest Crystal Size: n/a $75.00 Bailey Mine Cobalt Ontario, Canada This specimen shows a matrix of Nipissing diabase with a calcite vein cutting across the top of it. The carbonate vein is well mineralized with arsenide-coated native silver. Nice example of a silver vein!	Item #28174 Silver, Arsenides 12.8x12.7x3.6 cm Largest Crystal Size: n/a $85.00 Cobalt Lode Mine Cobalt Ontario, Canada Very rich high-grade silver mineralization associated with cobalt arsenides. The silver has not got much structure but there is a LOT of it!! The piece is sawn one side to reveal the silver content and textures while the backside is rough. Rich piece from one of the great mines!	Item #28172 Silver, Arsenides 9.7x6.5x2.0 cm Largest Crystal Size: n/a $55.00 Bailey Mine Cobalt Ontario, Canada A chunk of arsenide mineralization that is laced through with native silver. The piece is sawn on one side to reveal the mineralogical texture which makes the silver shiny and easy to see. The backside is rough. Nice!
Item #28171 Silver, Arsenides 14.7x8.9x3.1 cm Largest Crystal Size: n/a $65.00 Castle Mine Gowganda Ontario, Canada A thick, calcite vein cuts across the top of this matrix. The calcite vein is thoroughly laced with native silver that has a thick coating of cobalt arsenides. Very representative of high grade Castle Mine ores.	Item #28169 Silver, Arsenides, Calcite 9.3x7.3x4.0 cm Largest Crystal Size: n/a $120.00 Castle Mine Gowganda Ontario, Canada The top of this piece is a calcite vein, richly laced with native silver that has a coating of arsenide minerals. Sorry, don't know which ones! The dendritic structure is nice and this would be a welcome silver vein in any silver mine!	Item #28164 Silver, cobalt arsenides 13.1x13.5x0.6 cm Largest Crystal Size: n/a $120.00 Lumsden Mine Cobalt Ontario, Canada There is very ;little crystal structure to the silver in this slice of high grade silver vein but just REALLY high-grade silver!! Extremely rich.	Item #28163 Silver, Arsenides 16.0x13.1x0.7 cm Largest Crystal Size: 10mm $225.00 Beaver Mine Cobalt Ontario, Canada This large slice of high grade silver vein shows the entire width of the vein and wonderful dendritic silver crystallization in the dolomite vein gangue. A lot of the crystallized silver is in linear dendrites and, as well coarse veinlets. Most of the silver has a thin coating of arsenide mineralization. Beautiful!
Item #28161 Silver, Arsenides 15.1x13.7x0.7 cm Largest Crystal Size: 20mm $275.00 Beaver Mine Cobalt Ontario, Canada An excellent slice of high grade vein from one of the great producers of the Cobalt camp, the Beaver Mine. This slice shows excellent "herringbone" crystallized silver on both sides of the slice. Really nice!	Item #28159 Silver, Arsenides 37.0x15.2x0.6 cm Largest Crystal Size: 20mm $530.00 Beaver Mine Cobalt Ontario, Canada A slice of high grade featuring a complete vein section with both wall contacts. The silver in this sample in crystallized in the "herringbone" configuration and has a thin coating of arsenide mineralization. Would have been a pretty amazing vein to examine in-situ! Excellent!	Item #28158 Silver, Arsenides 18.0x10.3x0.5 cm Largest Crystal Size: n/a $120.00 Beaver-Temiskaming Mine Cobalt Ontario, Canada A slice of super, high-grade native silver mineralization from one of the great silver mines of the Cobalt mining camp. This vein was composed of a high percentage of native silver, present as dendrites, thick veins and small clots. Essentially the same on both sides. Rich!	Item #28157 Silver, Arsenides 11.0x7.1x1.0 cm Largest Crystal Size: n/a $45.00 Cobalt Lode Mine Cobalt Ontario, Canada About a third of this vein-slice is composed of attractive and interesting dendritic silver, associated with cobalt arsenide mineralization in carbonate vein matrix. Nice and rich!
Item #28156 Silver, Arsenides 14.5x7.8x1.1 cm Largest Crystal Size: n/a $45.00 Cobalt Lode Mine Cobalt Ontario, Canada An odd sort of ore texture consisting of blebs and clots of bright native silver, scattered through arsenide and carbonate vein matrix.	Item #28153 Silver, Arsenides 22.5x16.3x1.3 cm Largest Crystal Size: n/a $325.00 Brady Lake Mine Cobalt Ontario, Canada A thick, dense slice of a very high grade silver vein, showing both wall contacts. The silver is present in the carbonate and arsenide vein as very thick veins and coarse particles. Extremely high grade!!	Item #28152 Silver, Arsenides 24.3x16.0x1.2 cm Largest Crystal Size: n/a $325.00 Brady Lake Mine Cobalt Ontario, Canada A thick slice of a very high-grade slice of a native silver vein showing the contacts with both side of the wall rock. The silver is present as thick veins plus fine and coarse particles, cutting through the carbonate-arsenide matrix. The other side os the same. Very rich from the heart of the Cobalt mining camp!	Item #28149 Silver, Arsenopyrite 8.3x5.8x1.8 cm Largest Crystal Size: n/a $120.00 Bailey Mine Cobalt Ontario, Canada This piece is mostly silver, a thick silver plate with smaller silver plates attached to it. Some carbonate is also attached particularly at the end with the secondary plates. As well, there are silvery, arsenopyrite crystals plus, perhaps, some other arsenides and a little erythrite attached to the silver. Heavy!
Item #28147 Silver, in Nipissing Diabase 7.6x7.0x3.9 cm Largest Crystal Size: n/a $75.00 Bailey Mine Cobalt Ontario, Canada This was a veinlet of silver cutting through very coarse diabase. It has been split to reveal the silver that is now a "plate" and has the impressions of the feldspar and amphibole crystals imprinted in the silver. The Nipissing Diabase is considered to be related to the genesis of the silver deposits at Cobalt, somehow. Interesting piece!	Item #28146 Silver, Arsenides 14.4x9.6 cm Largest Crystal Size: n/a $160.00 Beaver Mine Cobalt Ontario, Canada This portion of silver vein is mostly silver with a coating of arsenide mineralization. The silver is in fine dendrites and very rich. Silver is also present as thick veins or clots. Very rich, high-grade!!	Item #28145 Silver, Arsenides 12.6x6.9x0.9 cm Largest Crystal Size: n/a $70.00 Lumsden Mine Cobalt Ontario, Canada A rich slice of high grade silver ore from the famous Cobalt Silver mining area. The Lumsden Mine was part of a mining complex beside Brady Lake that produced 7 million or so troy ounces of silver! This is why!	Item #28141 Silver 10.1x5.7x2.2 cm Largest Crystal Size: n/a $120.00 Cobalt Lode Mine Cobalt Ontario, Canada Not much arsenide in this one, just extremely rich veins, clots and dendrites of native silver in carbonate vein matrix.
Item #28140 Silver, Arsenides 9.6x7.1x2.9 cm Largest Crystal Size: n/a $65.00 Bailey Mine Cobalt Ontario, Canada The top portion of this sawn-one-side specimen is a carbonite-silver-arsenide vein showing rich native silver in veinlets, dendrites and as veinlets in the wall rock below the vein.	Item #28139 Gormanite, Quartz 6.6x4.5x1.6 cm Largest Crystal Size: 4mm $90.00 Big Fish River Yukon, Canada This is an unusual specimen. It is a part of a phosphate nodule that is lined with sort of smokey wuartz crystals with tufts of very dark green gormanite here and there between the quartz crystals. Very nice gormanite!	Item #28138 Gormanite, Siderite 4.1x2.6x5.0 cm Largest Crystal Size: 6mm $75.00 Big Fish River Yukon, Canada A number of sprays and divergent groups of acicular dark green gormanite crystals are concentrated at the front of this siderite lined cavity. Some nice ones!	Item #28136 Halotrichite, Fluorapatite 7.0x5.0x3.2 cm Largest Crystal Size: fl-3mm $45.00 Big Fish River Yukon, Canada The top of this matrix is covered by a druse of colourless, gemmy, fluorapatite crystals. Interestingly, the fluorapatites are surrounded or appear embedded in halotrichite on much of the specimen. Interesting!