Franckeite (var Potosiite)
San Jose Mine, Oruro
7.5x4.6 CM (small cabinet/ large miniature)
Potosiite is the rare Tin poor variety of the rare mineral Franckeite, and was a separate species until it was discredited in 1997. It is still a very rare Sulfide with crystals larger than micros considered huge. From a small find of the worlds largest and best crystals at the San Jose mine, this is a top example with individual crystals to 1.3 cm. For this rare and ugly mineral this is a true killer and even esthetic! This was rated as one of the best 7 pieces found.
From another classic locale this older miniature has well formed orthohombic crystals in an esthetic and oriented arrangement. These mines are long closed and have produced some of the best Sulpher ever found. This is a good example of the crystal form that made this location famous and is affordable compared to most.
Yaogangxian Mine, Yizhang County
3.5x3 CM (small miniature)
Very bright, metalic and with fine luster, this bournonite miniature shows excellent form with a pleasing contast to the matrix. Much better than usual condition for this delicate, brittle mineral, however there is some chipping and contacting like all of these have. The main crystal shows a fantastic cogswheel form. Since well crystalized Bournonite is very uncommon, the better Chinese examples are already becoming classics. For now, this is a bargain!
A pre-1930's piece from the classic location of Bad Ems, best known for fine pyromorphites. This is a sharp, glassy cerussite with only minor edge chipping. It is rare to see minerals of this quality available from these old European locations.
Barite on Calcite
Stoneham, Weld County
4.2x4.1 CM (miniature)
Nice light blue Barite, standing on a contrasting yellow crystaline calcite. The main crystal is 2.7 CM and sharp with no damage. There are some very small crystals scattered on the matrix that do show damage but they are not distracting. An attractive piece from this classic American locality, at an attractive price.
Daoping Lead-Zinc Mine, Yangshao
Guangxi Autonomous Region,
2.4x2.5 CM (thumbnail)
A very well formed and sharp cluster of hoppered crystals with good color. These are from the early 2001 finds and are simply great Pyromorphites at a super price.
Native Silver on Acanthite
Wutong Mine, Liubao, Cangwu Co. Wuzoh Pref.
Guangxi Autonomous Region,
3.2 x 2 CM (small miniature/ large thumbnail (toenail))
An exceptional silver / acanthite from an unusual locality in China better known for Rhodochrosites . This has very well formed acanthites (largest reaches 1 cm) that host a mass of silver wires of several forms. A very nice silver in general and the very best I have seen from this locale. This can be displayed to feature either the silver or the acanthites, both are well presented. 2007 find.
A very well presented apatite crystal of 2.7 CM (2.3 CM wide) dominates this small miniature. Shows great form and some transparency, the color changes somewhat from a pinkish hue to a greenish grey depending on the light type. Very esthetic and yet reasonably priced.