David K. Joyce

REDUCED -Sulphides, Sulphosalts, 40 Percent Off!

Deduct 40% from the listed price and an additional 20% for payment in US$!

All prices in Canadian dollars. For payment in US$, deduct 21% or multiply by 0.79.

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

Item #18856 Andorite, Zinkenite 3.8x2.4x0.7 cm Largest Crystal Size: As above $120.00 San Jose Mine Oruro City, Cercado Oruro, Bolivia This cluster of zinkenite crystals also has a couple of nice andorite crystals attached to the zinkenite. Classic combination from Oruro!	Item #8331 Arsenopyrite 3.3x3.8x2.7 cm Largest Crystal Size: 25mm $25.00 Yaogangxian Mine Chenzhou City, Hunan China Silver, lustrous, striated, elongated crystals of arsenopyrite in a pleasing cluster. The crystals are unusual and delightful to study.	Item #9821 Proustite 5.2x4.1x3.6 cm Largest Crystal Size: 4mm $75.00 Uchucchacua Mine Oyon Province, Lima Dept. Peru A wonderful cluster of ruby-red prustite crystals is perfectly exposed in this open vug in sphalerite-galena-carbonate matrix. A few other smaller crystals are scattered around the vug. Looks great!	Item #17531 Bournonite, Siderite 6.6x5.5x3.2 cm Largest Crystal Size: 36mm $150.00 Machacamarca Mine Machacamarca Cornelio Saavedra, Potosi, Bolivia A single, well formed, tabular bournonite crystal sits atop a matrix of tiny interlocking quartz crystals with a few siderite and pyrite crystals. Nice example!
Item #17543 Bournonite 5.5x4.3x3.5 cm Largest Crystal Size: 29mm $150.00 Machacamarca Mine Machacamarca Cornelio Saavedra, Potosi, Bolivia A really nice specimen of a single, twinned, tabular bournonite crystal on a matrix of, mostly quartz and pyrite with sharp siderite crystals. Displays very well!	Item #17544 Bournonite 6.2x5.0x2.5 cm Largest Crystal Size: 21mm $140.00 Machacamarca Mine Machacamarca Cornelio Saavedra, Potosi, Bolivia This specimen sports several tabular bournonite crystals on a siderite and pyrite matrix. The bournonite crystals have beveled sides with prominent striations. Looks good!	Item #17537 Bournonite 5.7x4.5x4.4 cm Largest Crystal Size: 26mm $140.00 Machacamarca Mine Machacamarca Cornelio Saavedra, Potosi, Bolivia A fairly sharp, cluster of bournonite crystals is attached to one end of this pourous quartz matrix. The cluster is composed of several, slightly divergent bournonite crystals with beveled edges. A little damage on the back not noticeable from the front.	Item #17539 Bournonite 6.9x5.3x2.7 cm Largest Crystal Size: 18mm $65.00 Machacamarca Mine Machacamarca Cornelio Saavedra, Potosi, Bolivia There are a couple of smaller, tabular bournonite crystals at one end of this quartz matrix. The crystals have some damage which is not apparent right away. A reasonable priced example.
Item #17546 Bournonite 7x5.8x1.8 cm Largest Crystal Size: 28mm $75.00 Machacamarca Mine Machacamarca Cornelio Saavedra, Potosi, Bolivia Two sharp, rust tinted bournonite crystals are exposed on the front of this matrix of siderite crystals.	Item #19954 Acanthite ps. Argentite 3.4x2.9x1.3 cm Largest Crystal Size: 12mm $900.00 Himmelsfurt Mine Freiberg, Saxony Germany This "thumbnail-sized" specimen shows a classic, elongated silver sulphide crystal protruding from calcite crystals on matrix. From one of the most classic localities for this mineral.	Item #19962 Andorite, Cassiterite 5.9x5.8x4.0 cm Largest Crystal Size: 12mm $900.00 Mina San Jose Oruro Bolivia A super-sharp, highly lustrous andorite crystal is exposed in an opening in this mostly cassiterite matrix. The andorite is nicely terminated. The cassiterite matrix is interesting in that it is sort of "honey-combed" and composed of thousands of tiny, almost acicular cassiterite crystals with a few tiny pyrite crystals. Very nice andorite specimen!	Item #19976 Chalcopyrite, Tetrahedrite, Sphalerite 11.5x8.2x3.5 cm Largest Crystal Size: c-24mm, s-13mm $350.00 Casapalca Mine Huarochiri, Lima Peru A wonderful plate of chalcopyrite crystals with a thin veneer of tetrahedtite and studded with a few reddish sphalerite crystals. There are also small tetrahedrite crystals oriented on some of the chalcopyrite crystals. Displays perfectly!