Quartz - Pseudocubic form
stock # 18.1- 102 A
Artesia, Eddy County
2.6 x 2 x 1.8 CM (thumbnail)
A sharp and complete crystal of the very rare "pseudocubic" habit Quartz, which is also very large for the form. The form is more correctly a skewed cube with overdeveloped rhombohedral faces that are not at 90 degrees but can look like it from several angles. No damage. This was incorrectly attributed to a small Arizona find but it is now confirmed as a very choice New Mexican specimen.
Daoping Lead-Zinc Mine, Yangshao
8.8 x 7.3 x 4 CM (cabinet)
Large mass of pure Pyromorphite in 3 dimensional hills with good grass green color. From the Daoping mine near Yangshao, this was mined before 2005 in the upper oxidized zone. That area has now been finished and the mine is closed. Well covered on the face with dense crystals, nearly all are perfect a few chips can be found with careful looking, but obviously not very noticable. The price reflects this. The luster is mixed, some crystals are quite bright and others have a more matte look. A good rich, sizable Pyromorphite from an important mine.
Golden, sharp and brilliant, Pyrites have fully replaced Marcasite crystals and these are well clustered on a series of large Dolomite crystals. Older specimen, ex John Marshall collection, obtained in 1991, there is no sign of instability or other problems as can happen with Pyrite pseudomorphs. A few crystals do have edge chips but most are perfect and complete. Attractive example with textbook twinned crystals from an very interesting, remote location.
Stibnite- tabular crystals
7.6 x 6.2 x 3.4 CM (cabinet)
Choice old Cavnic Stibnite with the rare type of flattened crystals. Sharp and clean, fine metallic luster and very three dimensional. These mines are closed and specimens of this quality are not often available. Even more impressive in person.
Fluorite- water clear green cubes
Xianghuapu Mine, Linwu, Chenzhou District
8.4 x 6.3 x 4 CM (cabinet)
From the finds at Xianghuapu in 2006, a super sharp and fully transparent cluster of Fluorite with bright luster. We obtained this back then at the mine, we selected from thousands of pieces looking for top quality and this was of that calibre. We sold all those specimens long ago but this one is back and it is nothing like the average pieces that flooded out later on. Now that the mining is closed up this sort of specimen is quite treasured. In fine condition, you can read through the Fluorites, which makes them difficult to photograph well enough to be fully appreciated. The main cube is 5.5 CM diagonal and is like green glass.
The classic habit of saddle shape Dolomite crystals completely replaced by sparkling smithsonite. The matrix is also nearly all Smithsonite and mostly composed of the rare red-orange color but also has zones of the more typical yellow. A long running debate concerns the color being caused by either Cadmium or Greenockite inclusions. To me it is a distinction without a difference, Greenockite is simply Cadmium Sulfide and so that Cadmium is ultimately the source for the color. In good condition, only a few very minor abrasions can be seen, the Dolomite saddles are quite large and stand well above the matrix.
Malachite Slice of stalactitic nodule
Katanga, Central Area, Katanga Copper zone
Democratic Republic of Congo (Zaire)
5.4 x 4.5 x .5 CM (small cabinet/ large miniature)
Sharp and colorful pattern is well presented on both sides of this cross section of Malachite. Good polish and fine contrast in the banding that is "cauliflower" in form. This sort of quality slice was at one time more common but now is quite scarce. A modern classic.
Azurite -Spherical with Malachite
Morenci Mine, Copper Mt. District, Shannon Mts., Greenlee County
8.6 x 5.9 x 3.8 CM (cabinet)
Brilliant blue ball form Azurites sit on a contrasting gossan matrix with a few areas of Malachite. Choice old specimen ex Warren Johannson collection. Warrens notes give the locality as Bisbee and he obtained it in 1937. It is very likely from nearby Morenci as this habit is noted there, and many Morenci pieces ended up with Bisbee labels. Some additional balls are on the backside, but the display side shown is the best for presentation. The soft matrix has been stabilized, the luster is very bright and the color electric blue.