David K. Joyce

Sulphides, Arsenides, etc. Miscellaneous, Page Three

More interesting and beautiful minerals from these groups.

All prices in Canadian dollars. For payment in US$, deduct 20% or multiply by 0.8.

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

Item #20260 Sphalerite, Siderite, Pyrite 6.3x6.7x5.4 cm Largest Crystal Size: Sp-9mm, Si-10mm $85.00 Eagle Mine Gilman, Eagle Co. Colorado, USA An excellent representation of the main mineralization at this long-closed mine. The front of this quartz matrix is covered by sphalerite crystals with a few, disc-like siderites and sprinkles of tiny, sparkling, pyrite crystals.	Item #20659 Galena 9.7x6.4x3.9 cm Largest Crystal Size: 20mm $85.00 Level 450/500, Block 22 Kruchev Dol Mine, Madan Bulgaria A plate of galena crystals from this modern day, classic locality. It is difficult to see but his is, in fact, one big spinel law twin and that is why the crystals appear to be in parallel. On one side, the crystals have that rounded appearance that we sometimes see from Madan. Just partially. The rest of the crystals are exceedingly sharp! Excellent luster. Very nice piece.	Item #22354 Sphalerite 4.2x4.0x2.2 cm Largest Crystal Size: 30mm cluster $55.00 Elmwood Mine Carthage Tennessee, USA A complex, very dark brown sphalerite crystal is well exposed on this matrix of creamy-white dolomite crystals. Displays very well. One of the nicest sphalerite crystal locations in modern times!	Item #29164 Galena 0.5x0.5x0.2 cm Largest Crystal Size: each as above $90.00 Radvanice Katerina Coal Mine Czech Republic These unusual iridescent galena specimens are exhalative formations that come from a, no longer operational, coal mine with a burning waste dump. The galena crystals form at a temperature of more than 600°C. They are slightly radioactive (not nearly enough to cause harm). The specimens come with a handwritten label from a dealer based in the Czech Republic. Ref: http://tw.strahlen.org/haldenbrand/burningdumps_radvanice.html https://www.sciencedirect.com/science/article/pii/B9780444595096000053 https://www.youtube.com/watch?v=Ju8c6LtA5ZE
Item #24654 Millerite 4.8x3.8x2.2 cm Largest Crystal Size: 6mm $35.00 Halls Gap Lincoln County Kentucky, USA This silica geode has many fine, hairlike millerite crystals in it. The crystals are very fine, golden hairs that criss-cross across the open space. Nice! s	Item #24655 Millerite 3.6x2.6x3.5 cm Largest Crystal Size: 5mm $35.00 Halls Gap Lincoln County Kentucky, USA Lots of golden, hairlike, prismatice crystals of this nickel sulphide mineral stick out of the silica lining of this geode from the famous Hall's Gap area of Kentucky. Classic! s	Item #24656 Millerite 4.9x4.0x3.0 cm Largest Crystal Size: 8mm $45.00 Halls Gap Lincoln County Kentucky, USA Nests of golden millerite needles are present on the chalcedony lining of this geode from the Famous Hall's Gap area. There are also some spiky crystals that may be millerite but I'm not sure. Interesting piece! s	Item #25066 Bournonite 3.9x2.4x3.0 cm Largest Crystal Size: 15mm $65.00 Les Malignes Mine France A cluster of characteristically sharp, yet rounded bournonite crystals from this locality that is famous for this mineral. The apparently, rounded crystals are actually composed of very small stepped faces in this specimen. French classic!
Item #29167 Galena up to 0.6x0.6x0.1 cm Largest Crystal Size: as above $100.00 Radvanice Katerina Coal Mine Czech Republic These unusual iridescent galena specimens are exhalative formations that come from a, no longer operational, coal mine with a burning mine dump. The galena crystals form at a temperature of more than 600°C, in the mine dump. They are slightly radioactive (not nearly enough to cause harm). This specimen comes with a copy of the original handwritten label from a dealer based in the Czech Republic. Ref: http://tw.strahlen.org/haldenbrand/burningdumps_radvanice.html https://www.sciencedirect.com/science/article/pii/B9780444595096000053 https://www.youtube.com/watch?v=Ju8c6LtA5ZE	Item #25950 Arsenopyrite 3.3x2.0x1.7 cm Largest Crystal Size: as above $45.00 Jardine Montana, USA A twinned, crystal of arsenopyrite that is oxidized on the outer surface. The crystal is not complete and is missing part of the crystal on the backside. Still, an interesting crystal from an interesting locality.	Item #26446 Millerite, Quartz 2.8x3.1x1.2 cm Largest Crystal Size: 10mm $40.00 Hall's Gap Kentucky, USA A wonderful quartz-lined geode that contains a wonderful swirling, curling array of acicular millerite crystals. How DO they form like that!?	Item #29003 Sperrylite 5.3x4.0x3.6 cm Largest Crystal Size: 1mm $75.00 Vermillion, Denison TWP Sudbury Dist (Dana Loc) Ontario, Canada A couple of crystals of this rare platinum arsenide are present on this oxidized ore from the famous Vermillion Mine. One is complete and the other is not. Getting harder to come by these, these days. The Vermillion mine has been closed for many decades and bulldozed and rehabbed, now.
Item #29111 Gersdorffite, Quartz 2.3x2.9x1.8 cm Largest Crystal Size: 2mm $45.00 South M. Ural Mtns Russia This fragment of polished quartz contains some very sharp octahedral crystals of gersdorffite. Sharp!