David K. Joyce

Mexico, Various Minerals and Localities

Here are some very nice specimens that just don't fit into any of the other categories. All very nice!

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

Click on any of the following thumbnails to view a larger image of the specimen.

Item #13447 fluorapatite, Quartz var Chalcedony 6.0x3.9x2.5 cm Largest Crystal Size: 22mm $40.00 Cerro del Mercado Durango Mexico A really nice, gemmy yellow fluorapatite crystal partially embedded in interlocking quartz crystals, coloured red by hematite. Interestingly, there is a growth of chalcedony on the front of the specimen, as well. Sawn back. Displays very well.	Item #18709 Gypsum, var. Selenite 14.1x9.5x4.1 cm Largest Crystal Size: 23mm $110.00 Los Lamentos Mine Chihuahua Mexico A plate of curly-cue crystals of gypsum. An excellent example of this habit of gypsum!	Item #20268 Calcite 11.5x11.0x8.0 cm Largest Crystal Size: 21mm $75.00 Chihuahua Mexico A large cluster of sharp but rounded, lustrous calcite crystals. The crystals are, essentially, complex, modified scalenohedra with reddish inclusions of hematite or iron-rich clay. Sorry, Chihuahua is the best locality info that I have. Looks great!	Item #20911 Arsenopyrite, Quartz 11.5x8.2x4.0 cm Largest Crystal Size: Ar 11mm, Qu 7mm $120.00 Noche Buena Mine Mazapil, Zacatecas Mexico Can't believe this is in the "Reduced " section! Really perhaps the best arsenopyrite specimen I've seen from Noche Buena Mine. Many silvery arseno crystals associated with milky quartz crystals, all on a matrix of coarse, dark brown, massive sphalerite. Displays perfectly!
Item #20921 Fluorite, Sphalerite, Galena 9.5x6.5x3.1 cm Largest Crystal Size: Fl 10, Sh 8mm, Ga 8mm $60.00 Naica Chihuahua Mexico Naica is famous for "ore specimens" that look like this; a plate of sphalerite, galena and chalcopyrite crystals that are accented by very light green, gemmy, complex, fluorite crystals. Looks great!	Item #20922 Calcite, Sphalerite, Pyrite 15.1x11.0x5.7 cm Largest Crystal Size: Ca 10mm, Sp 22mm, Py 4mm $110.00 Naica Chihuahua Mexico The veins at Naica much have really been something to see! Here is a thick plate of sphalerite, pyrite and calcite crystals from one of those veins. Excellent!	Item #21199 Wulfenite 3.5x4.2x2.4 cm Largest Crystal Size: 15mm $45.00 Mina Ahumada Los Lamentos, Chihuahua Mexico A very nice cluster of "butterscotch"-like wulfenite crystals from this famous Mexican locality. Has some bruising and contacting. Looks great, though, on its acrylic base. t	Item #22088 Calcite, Pyrite 10.0x7.0x4.0 cm Largest Crystal Size: Ca 3mm, Py 25mm $65.00 Naica Chihuahua Mexico An excellent specimen of these two gangue minerals from Naica. The sharp pyrite crystals underneath are partially covered by off-white scalenohedra of calcite. Displays very well! r
Item #22108 Danburite, Calcite 14.1x5.4x4.0 cm Largest Crystal Size: as above $120.00 Charcas San Luis Potosi Mexico Wow! A VERY large, singly terminated danburite crystal from the place that produces some of the best and biggest crystals! This crystal has a perfect termination with interesting facets. The "front" is nicely striated, lustrous crystal faces and the "back" is totally covered with hexagonal, tabular calcite crystals. Excellent example of this mineral!	Item #29304 Fluorapatite 9.2x4.5x7.8 cm Largest Crystal Size: 26mm $75.00 Cerro Demercado Mine Durango Mexico A magnificent example of fluorapatite in siliceous matrix from this famous locality. A couple of gemmy, yellow-green, sngly-terminated crystals are nicely exposed for display in this specimen. Some other crystal sections in the matrix, as well.	Item #29305 Calcite (optical) 4.8x4.3x3.4 cm Largest Crystal Size: as above $40.00 Mexico A cleavage fragment of the optically clear, "iceland spar" variety of calcite. Perfect for demonstrating double refraction!	Item #22901 Sphalerite, Pyrite 4.0x2.8x2.4 cm Largest Crystal Size: 12mm $35.00 Naica Chihuahua Mexico Nice, small cluster of dark brown sphalerite crystals crowned with lots of golden pyrite crystals. Classic!
Item #22903 Sphalerite, Pyrite 4.6x2.8x2.0 cm Largest Crystal Size: 16mm $35.00 Naica Chihuahua Mexico Here is a nice ssphalerite cluster! One larger, 16mm crystal sits on a mound of smaller crystals. A couple of pyrite "pyritohedra" are associated. Nice looking.	Item #24418 Wulfenite 5.2x4.8x3.7 cm Largest Crystal Size: 11mm $45.00 Los Lamentos Mine Chihuahua Mexico An 11mm thick-blocky-tabular, orange crystal of wulfenite sits perfectly, right in the middle of this matrix of botryoidal carbonate. The crystal has a couple of small chips out of it but still it is a striking specimen. Classic wulfenite locality!	Item #24422 Azurite 4.2x3.2x30 cm Largest Crystal Size: 2mm $45.00 Zacatecas Mexico The azurite mounds on this specimen are composed of many, closely packed deep blue, well formed azurite crystals. The matrix is white quartz which provides a good contrasting matrix colour. Sorry, only have Zacatecas as locality info. Looks great!	Item #24474 Danburite 6.2x4.7x4.5 cm Largest Crystal Size: 23mm $65.00 Charcas San Luis Potosi Mexico A nice cluster of terminated danburite from one of the most famous localities for this mineral. Alittle irontinting give the specimen a bit more 3-D viewing. Displays well.
Item #24488 Wulfenite, Calcite, Mimetite 9.4x6.2x4.3 cm Largest Crystal Size: w-8mm $85.00 San Carlos Mine San Carlos, Chihuahua Mexico There are a number of gemmy-orange, square-tabular, beveled wulfenite crystals scattered about on this matrix along with lots of white calcite crystals and a background of what I think is green, botryoidal mimetite in very tiny botryoids. Beautiful!	Item #24630 Wulfenite 7.4x5.2x3.2 cm Largest Crystal Size: 5mm $35.00 Ojuela Mine Durango Mexico Lots of thin, platy crystals of yellow wulfenite on this limonite matrix. Older specimen from this famous locality. s	Item #24616 Plattnerite 7.0x4.9x3.8 cm Largest Crystal Size: 3mm $35.00 Ojuela Mine Mapimi, Durango Mexico This specimen of hemimorphite crystals is coloured black by a sprinkling of tiny, black, plattnerite crystals. Good example! s	Item #24682 Wulfenite 5.0x3.3x1.5 cm Largest Crystal Size: 12mm $65.00 Los Lamentos Chihuahua Mexico A very nice cluster of wulfenite crystals of a different style than we normally see at Los Lamentos. s
Item #24951 Legrandite, Adamite 10.0x5.0x3.4 cm Largest Crystal Size: 8mm $40.00 Ojuela Mine Mapimi, Durango Mexico Cavities in this limonite matrix have clusters of beautiful, light green adamite crystals. Perhaps the most famous locality for adamite!?	Item #25070 Wulfenite 5.0x4.9x3.0 cm Largest Crystal Size: 22mm $70.00 Los Lamentos Chihuahua Mexico This may be the largest wulfenite crystal that I have seen from this famous old location! It is a thick (REALLY THICK!), tablular, wulfenite crystal 22mm on edge, on matrix. Quite something!	Item #25200 Wulfenite, Mimetite 3.8x2.9x3.8 cm Largest Crystal Size: Wu 8mm, Mi 4mm $35.00 Magdalena Sonora, Mexico Several, nice, thin-bladed wulfenite crystals are perched on top of a large cluster of very yellow mimetite crystals. The mimetite is actually in sort of divergent crystal bundles. Both the wulfenite and the mimetite are lemon yellow on one side and tinted with brownish clay or iron oxides on the other side. Nice specimen from an unusual location!	Item #26304 Schorl, Quartz 5.7x5.4x3.6 cm Largest Crystal Size: 31mm $75.00 Santa Cruz Sonora Mexico This specimen is a quartz crystal plate that is largely covered with very unusual sprays of acicular quartz crystals. Sort of branching aggregates of needle-like, dark-brown schorl crystals. There are several large sprays and a number of smaller. Unique! Displays well.
Item #26492 Chalcopyrite, Quartz, Calcite, Tennantite 7.7x6.7x6.0 cm Largest Crystal Size: ch-16mm $40.00 El Cobre Zacatecas Mexico A kind of floater aggregate of quartz crystals that is studded with black-coated chalcopyrite crystals, some of which have a tennantite overgrowth. As well, there are calcite scalenohedra on and in amongst the quartz crystals. Classic Mexican locality.	Item #27314 Wulfenite, Mimetite 13.2x6.8x4.8 cm Largest Crystal Size: 5mm $75.00 La Mina Ojeula Mapimi, Durango Mexico This limonite-mimetite matrix has lots of sharp. yellow elongated, blocky wulfenite crystals on the top of it, associated with green botryoids of mimetite. Displays well.	Item #27315 Wulfenite, Mimetite 13.6x9.4x3.4 cm Largest Crystal Size: 9mm $75.00 La Mina Ojeula Mapimi, Durango Mexico A number of elongated, blocky, yellow wulfenite crystals are scattered over the top of this limonite matrix and associated with smaller, green botryoids of mimetite. Sawn base. Very nice!	Item #27316 Wulfenite, Mimetite 8.2x6.5x3.4 cm Largest Crystal Size: 8mm $65.00 La Mina Ojeula Mapimi, Durango Mexico This concave vug has many very needle-like, yellow, wulfenite crystals, particularly around the lower part of the vug. Lots of green, spherical blobs of crystallized mimetite. Nice one!
Item #27317 Wulfenite, Mimetite 6.4x7.7x4.0 cm Largest Crystal Size: 9mm $75.00 La Mina Ojeula Mapimi, Durango Mexico Lots of yellow wulfenite crystals are clustered around the top of this limonite-matrix. The crystals are elongated prismatic, yellow crystals with a square cross-section. Sawn base. Great crystals!	Item #27650 Danburite 6.5x3.0x2.0 cm Largest Crystal Size: as above $55.00 Charcas San Luis Potosi Mexico Wow! THIS is a gemmy one! This perfectly terminated crystal of danburite is colourless and very gemmy. You could cut nice gemstones out of parts of it! Perfect terminal faces and well striated on the prism faces. This is THE contemporary classic locality for danburite.	Item #27657 Hydrozincite 5,4x4.1x2.5 cm Largest Crystal Size: micro $35.00 Mapimi Durango Mexico Various openings through this gossan matrix have linings and tufts of pure white, acicular crystals of hydrozincite. Very fluorescent. Nice example!	Item #27663 Scorodite 4.4x2.7x1.3 cm Largest Crystal Size: 3mm $35.00 La Mina Ojuela Mapimi, Durango Mexico Lots of colourless, sharp, sparkling crystals of scorodite on this limonite matrix. Less common mineral from the Ojuela Mine
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 #29677 Mimetite, Gypsum 12.5x10.5x6.0 cm Largest Crystal Size: 4mm balls $75.00 San Pedro Mine San Luis Potosi Mexico A large matrix of porous calcite with many openings covered with yellow balls of mimetite, which in turn have colourless, clear gypsum on them. Not all of them but a large percentage. Attractive, interesting piece!	Item #29474 Apatite 7.9x4.1x2.3 cm Largest Crystal Size: 19mm $45.00 Cerro de Mercado Durango Mexico The Cerro de Mercado Mine is famous for these gemmy fluorapatite crystals embedded in a hard siliceous matrix. This specimen shows a gemmy-yellow crystal, well terminated exposed nicely on the siliceous matrix. Interesting occurrence and shows well!	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!