Wessels Mine, Hotazel, Northern Kalahari Mn Fields
Northern Cape Province,
1.7 x 1.1 x .7 CM (thumbnail)
A top killer thumbnail of Gaudefroyite, the rare manganese mineral only known in decent crystals from a few places, all in the Kalaharie Manganese fields. This specimen is a stellar example with textbook form, sharp edges and bright luster. This is a large (for the specie) main crystal with a few smaller crystals on the base, and the prism has none of the crudeness or dull faces usually seen. Superb specimen of a usually unattractive rare, black mineral.
A strange form for this unusual gemmy pink Apatite from Golconda. This is a complete floater with no matrix or points of attachment, and no damage either. The crystal is curved and tapered with twisting evident as well. Certainly odd and far from typical, there is also a fadden-like inclusion running the length of the crystal clearly seen with any backlighting.
Berg Aukus, Grootfontein District
5.3 x 2.4 x 1.4 CM (small cabinet/ large miniature)
A lustrous, flattened crystal tree or leaf-like structure of oriented Descloizite crystals in super condition. A textbook example of epitaxial arrangement or stacking. The individual crystals are a dark red color in strong light but in normal light they look black to metallic silvery. The crystals are undamaged, some are also transparent. Great form and sparkling luster, these fine Berg Aukus specimens have become rare in this quality. The Descloizites from this closed mine are regarded as the best ever found and are modern classics.
The rare coper mineral Kobyashevite was discovered and described in 2011. A close relative of Devilline this Copper Sulfate specie was an exciting find at Mina Ojuela this year, and in this deposit the specimens are impressively large and attractive, certainly the worlds best. It seems that these specimens are postmining redepositions and are always partly overgrown with small needles of clear Selenite. The best examples have a rich blue-green or Turquoise
color and when this is deposited on calcite crystals these have a very esthetic presentation. This specimen is in excellent condition and is the most attractive I have seen from the find. A choice and colorful rarity.
Fluorite -enclosing Shorl
Erongo Mountain, Karibib
3.5 x 3.4 x 2.4 CM (small miniature/ large thumbnail (toenail))
The Erongo Mountains sometimes produce some very exotic and amazing Fluorites. This is an excellent example with stacked "melted look" crystals completely enclosing crystals and sprays of Schorl. The Fluorites are all Spinel twinned, the highly etched surface gives an unusual look and the whole piece is simply bizarre. In fine condition a neat small miniature.
A delicate and fine Dolomite cast having two separate generations. The large scalenohedral shapes are hollow having just a thin skin of Dolomite that had covered what were likely Calcites, now long gone. The matrix is an earlier generation itself just a thin skin of tiny sparkling crystals. The Dolomite casts from Tsumeb were found in many exotic forms are are very collectable. This one is in perfect condition, esthetic and looks fine from all sides.
Topaz - Classic Colorado
Tarryall Mt, Park County
2.9 x 2.3 x 1.9 CM (thumbnail)
A very nice thumbnail with fine provenance. This was in the Warren Johansson Collection since September 1941, he obtained this from the legendary George M White. Warren was a student at that time and was very actively exchanging minerals while working on his Phd. George White is famed for his Topaz finds. This specimen has a flawless clear, undamaged Topaz crystal perched on contrasting matrix. A choice slice of mineral history.
Fluorite -dark zoned
Yaogangxian Mine, Yizhang County
4.1 x 3.3 x 2.5 CM (miniature)
very sharp single cube perched on a shard of matrix, mostly Muscovite. The Fluorite has very deep purple zones and masses on the outer edges the center core is transparent and a light blue color. Very glassy luster as in all the better Yaoganxian Fluorites. The display side is perfect damage wise, there is contacting and cleaves on the back. Better in person, this is from mining in the 2004-5 season when a very rich area was worked. The locality no longer produces anything like this.