Manganite w. Barite
Ilfeld, Nordhausen, Harz Mts
5.2 x 3.4 CM (miniature)
From the most famous and classic locality for Manganite this is a very attractive recent specimen excavated from an adit discovered on an old dump dating to the 1500s. Much Manganite in collections can have several hundred years of history as the Harz Mts have produced the best materials centuries ago. This find produced a small number of good pieces some with very bright luster. Thius is a good example with excellent contrast with the calcite that has been partially etched away. This is also far more affordable than the vintage materials when they can be found!
It has been several years since any specimens have come from the Chasen Mine, I hear it is fully flooded now. This is a fine example of the quality the mine was capable of producing. A sizable (4 CM) gemmy Fluorite has a rim of epitaxial Dolomite crystals making a "nest" along two edges. This sits on sprays of Mangano calcite that are dusted with micro pyrites. Only very minor chipping that is not distracting, and nice FL as well. There is a little similarity to the material from the nearby Xinghuapu Mine, but the differences are distinctive. Suitable in any collection but especialy good for Fluorite suites or Chinese collections.
A wonderfully esthetic example of Swiss Adularia, a well defined Manebach twin set on a slender shard of matrix. Excellent condition, sawn on the back to remove this without damage. You don't need to be a Feldspar collector to appreciate the setting of this twin!
Native Silver w. minor copper
stock #8 US 941
Wolverine Mine, Wolverine, Houghton Co.
12.2 x 5.2 x 1 CM (cabinet)
A very large and rich Silver from the Wolverine mine. This has almost 100 percent Silver but there is a tiny sploch of Copper on one edge. The silver has a patina ranging from near black to irridescent to brighter silver tones. Some of the silver at first glance looks copperlike. Some bits of matrix are included but this is nearly all metal. With low magnification some herringbone and crude crystals are seen as well. In outstanding condition this is a classic and heavy chunk of Michigan Silver!
A very fine copper branch, well crystallized and with great esthetics. This piece still has a few flecks of adhering matrix (which could be removed). The definition and sharpness of the flattened crystals is outstanding. It is hard to tell what the vintage of this is, but this is clearly a very old piece, sold by Shortmanns in the 1950s but perhaps over 50 years older than that. There is a lot of good copper in the market but this is really different and distinctive!
A big rich red translucent rhomb that is quite a good Rhodo on its own. However, this has the addition of wire silver and silver "skins" in several spots. The largest wire is about 7mm long and easily visible. This locality has produced only a few good examples of this rare association. This is an outstanding one. The crystal is transparent to translucent and glows with any backlighting. There is the typical internal stress fractures visible inside, a contact on the backside, and cleaving on the exterior as seen in the photos. Despite this it is a very attractive, displayable, bright and eyecatching crystal in the top percentile of quality from this location. A most desirable piece for a Chinese suite, Rhodo or Silver collection or just for the novelty and color!
stock #8 UT THUMB 788
2.9 x 2.7 CM (thumbnail)
A lusterous thumbnail with several sizable and sharp bixbyites, on a matrix of topaz (cystallized with "sand" inclusions). The crystals all have some contacting and included topaz and the matrix topaz is somewhat crude. Despite this the largest crystal of Bixbyite is sizable at 1.4 CM and very bright, and this is well over the average in general quality.
From the classic California pegmatites this is a very different and remarkable tourmaline! The bi color crystal is sharp, glassy has some "cats eye" fibers and a lot of gem clear areas. However what makes this exceptional is the central hole in the center of the termination. This hole is roughly triangular in cross section, like the exterior of the crystal. Furthermore, it is striated on the inside and runs thru more than half of the crystal before it ends at a "negative termination" . The crystal has some very nice color, minimal damage (not eye visible) but the hoppered area is what makes this really impressive. Good for any gem crystal collection or as a conversation piece.