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 19% or multiply by 0.81.

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

Item #4246 Sphalerite, Pyrite 4.5x2.8x1.8 cm Largest Crystal Size: 17mm $25.00 Naica Chihuahua Mexico A cluster of sphalerite crystals with a 17mm crystal sitting up nicely in the centre. A nice pyritohedral pyrite crystal is positioned just in front of the sphalerite. Nice looking!	Item #4247 Sphalerite, Pyrite 3.6x2.9x3.1 cm Largest Crystal Size: 17mm $25.00 Naica Chihuahua Mexico A very attractive cluster of sphalerite crystals accented by duses of 1-2mm pyrite crystals that have been directionally applied to the sides of the sphlaerites. The sphalerite crystals are black with light striations and are not crazily twinned like we often see. Nice!	Item #4251 Sphalerite 4.1x2.3x2.7 cm Largest Crystal Size: 30mm $25.00 Naica Chihuahua Mexico This is a small but attractive and interesting piece. It consists of one large crystal with a stack of pyrite and smaller sphalerite crystals piled up on top of it. Looks Great!	Item #4266 Sphalerite, Quartz 8.3x6.5x7.0 cm Largest Crystal Size: 15mm $45.00 Naica Chihuahua Mexico A mound of black sphalerite crystals with lots of small, prismatic, milky quartz crystals scattered all over them. I've taken pictures from a couple of angles on this one.
Item #4272 Galena, Quartz 5.5x4.0x2.5 cm Largest Crystal Size: 10mm $30.00 Naica Chihuahua Mexico This specimen is mostly composed of well formed galena crystals covering massive pyrite and associated with some small quartz crystals. Many of the galena crystals are well-formed spinel-law twins while some are simple cube-octahedra. Nice looking specimen.	Item #4325 Pyrite ps. after Pyrrhotite 9.3x7.8x7.3 cm Largest Crystal Size: 23mm $55.00 Zacatecas Mexico A handsome specimen consisting of sub-parallel groups of pyrrhotite crystals replaced by pyrite along with some black sphalerites and well formed crystals of pyrite. Some creamy calcite crystals, as well. The front of the specimen is tipped up at 45 degrees from horizontal for perfect display.	Item #8404 Mimetite 5.8x4.9x4.6 cm Largest Crystal Size: n/a $90.00 San Antonio Mine Santa Eulalia Mexico A superb cluster of botryoidal balls of beigy mimetite. The balls are composed of tightly packed crystals of mimetite and are very good quality. Classic. Displays well.	Item #13416 Danburite, Calcite 9.0x8.1x5.6 cm Largest Crystal Size: d-36mm, c-41mm $75.00 Mina Aurora Charcas, San Luis Potosi Mexico A very nice cluster of long, slender danburite crystals with a partial coating of white calcite. As well, there is a great-looking, scalenohedral calcite crystal on the lower left side, as well. Great looking specimen form a classic Mexican locality.
Item #12042 Hemimorphite 11.5x8.2x5.2 cm Largest Crystal Size: 15mm $75.00 La Mina Ojuela Mapimi, Durango Mexico A beautiful specimen of hematite-stained hemimorphite crystals bristling out of a concave area on this limonite matrix. Looks great!	Item #12043 Mimetite, Calcite 6.7x5.6x1.0 cm Largest Crystal Size: n/a $35.00 Chihuahua Mexico This thin plate of calcite has a partial coating of yellow-orange botryoidal mimetite fully or partially covering the colourless and white calcite crystals. Classic!	Item #12044 Mimetite, Calcite 6.2x4.8x2.0 cm Largest Crystal Size: n/a $40.00 Chihuahua Mexico This thin plate of colourless calcite crystals has about a 50% coverage by yellow-orange botryoidal mimetite. Nice!	Item #15053 Galena, Pyrite, Calcite 5.5x3.7x3.3 cm Largest Crystal Size: g-13mm $35.00 Naica Chihushua Mexico Several very sharp, lustrous galena crystals are well positioned on a matrix of small calcite crystals associated with pyrite crystals. Looks good!
Item #15055 Galena, Pyrite 4.4x2.7x2.2 cm Largest Crystal Size: 15mm $30.00 Naica Chihuahua Mexico A 15mm , lustrous, well formed cube-octahedron of galena sits atop this mound of small pyrite and galena crystals. Nice!	Item #15064 Boulangerite. Pyrite, Sphalerite 7.1x3.5x5.0 cm Largest Crystal Size: j-9mm $65.00 Noche Bueno Zacatecas Mexico A very nice specimen of these oft-associated minerals. The piece has a vug on the left side that sports a couple of clusters of hair-like boulangerite crystals amongst dark brown sphalerite and golden pyrite crystals.	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 #16780 Calcite, Hemimorphite 7.7x4.9x2.7 cm Largest Crystal Size: c-15mm, h-4mm $25.00 Santa Eulalia Chihuahua Mexico A nice cluster of very white, slightly iron-tinted calcite crystals with some small, clear, bladed hemimorphite crystals here and there. Nice!
Item #16792 Adamite 5.7x4.4x4.4 cm Largest Crystal Size: 8mm $45.00 Ojuela Mine Mapimi Mexico The shallow vug on the top of this specimen is largely lined with light green composite adamite crystals. Classic!	Item #16757 Mimetite, Calcite 5.6x4.0x3.6 cm Largest Crystal Size: 8mm mounds $75.00 El Potosi Mine Santa Eulalia, Chihuahua Mexico Here is a Mexican classic! This piece features mounds of sort of botryoidal mimetite composed of tiny yellowish mimetite crystals. As well, there are sharp calcite crystals on the back and mixed in between the mimetite mounds. Old Western Minerals/Schlepp label accompanies the specimen. Displays very well.	Item #16919 Calcite 11.5x8.7x5.7 cm Largest Crystal Size: 52mm $120.00 Santa Eulalia Chihuahua Mexico What a great specimen of Calcite! This piece consists entirely of branching crystals of pure-white calcitecrystals. I guess you'd call it dendritic! From a famous calcite crystal locality!	Item #16921 Gypsum, var. Selenite 12.5x5.8x2.4 cm Largest Crystal Size: as above $55.00 Naica Mine Chihuahua Mexico A very nice, elongated twin crystal of gypsum from one of the most famous "selenite" localities in the world. Very little bruising. Classic!
Item #19879 Mimetite, Calcite 19.0x11.5x4.4 cm Largest Crystal Size: 6mm balls $140.00 Santa Eulalia Chihuahua Mexico A large plate of calcite that is peppered with rounded aggregates of orange mimetite. Great looking specimen!	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 #20913 Hemimorphite 11.9x8.7x4.9 cm Largest Crystal Size: 8mm $55.00 Ojuela Mine Mapimi, Durango Mexico Really nice cluster of hemimorphite from this world famous, prolific producer of secondary mineral specimens. The hemimorphite crystals are colourless, transparent, bladed crystals. Some white calcite rhombs suspended in the hemimorphites. Nice small cabinet specimen.	Item #20914 Sphalerite, Quartz, Calcite 12.5x11.6x4.9 cm Largest Crystal Size: Sp 20mm, Qu 11mm, Ca 9mm $140.00 Naica Chihuahua Mexico A really nice plate of dark brown, lustrous, sphalerite crystals largely covered with beige quartz crystals and some white rhombs of calcite.
Item #20988 Gypsum 18.2x12.0x6.0 cm Largest Crystal Size: as above $130.00 Naica Chihuahua Mexico This specimen is one, large parallel growth selenite crystal with multiple, terminations. There is some rock attached to the bottom left hand corner. Water clear and very lustrous. A little abrasion but, as you can see, not very noticeable. Gorgeous example!	Item #21155 Pyrargyrite 2.3x2.1x1.2 cm Largest Crystal Size: 3mm $85.00 San Luis Mine Fresnillo, Zacatecas Mexico Very good cluster of trigonal pyrargyrite crystals with just a little quartz on the back. The crystals are prismatic-hexagonal with rhombohedral terminations. Some damage but lots of good crystals! t	Item #21193 Azurite, Malachite 10.7x8.0x5.4 cm Largest Crystal Size: n/a $120.00 Zacatecas Mexico Really great looking, old-time specimen from this well oxidized part of the world! It is a mound of deep blue, small azurite crystals that sparkle in association with green, botryoidal malachite. Displays extremely well.	Item #21256 Wulfenite 9.5x6.5x3.5 cm Largest Crystal Size: 5mm $75.00 Ojuela Mine Mapimi, Durango Mexico A superb example of a different habit of wulfenite than we have seen recently from the Ojuela Mine. The crystals appear like sandwiches, lighter, opaque, yellow-green outer pinacoid zone with a darker, less opaque middle zone. In reality, the crystals are a little darker yellow-green colour than featured in the pictures. Great looking specimen with no discernable damage. Displays perfectly! R
Item #21288 Grossular 13.0x11.1x5.2 cm Largest Crystal Size: 14mm $85.00 Coahuilla Mexico What colour for a garnet! Half of this specimen is covered by grossular crystals that have a peculiar, hot-pink colouration. Some of the crystals are rough dodecahedra while others are very sharp dodecahedra.