Calcite on Adamite
Mina Ojuela, Mapimi
5 x 4.2 x 2.3 CM (miniature)
Sparkling reddish-pink Calcites encrust and contrast with green Adamite balls. Great luster and vivid color, this is hard to fully appreciate in photos but has really good display impact. Most of the Adamite is fully encased under the Calcite but it is seen clearly at some angles. Ojuela has produced many fine Adamites in many habits during a long history. This color combo is not so common, this miniature piece is in fine undamaged condition and would go well in a suite of choice Mexican minerals.
Milarite on Valencianite and Quartz
Valenciana Mine (Mina La Valenciana), Municipio de Guanajuato
7.8 x 5.8 x 5.4 CM (cabinet)
One of the more uncommon Beryllium Silicate species, Milarite is a real "mineral collectors" specie. This piece is from the find some decades ago in Guanajuato, Mexico. The Matrix is a mix of Quartz and Valencianite (variety of Adularia). The Valencia Mine is the type locality for the Feldspar and was the source of these small bright yellow Milarites which were big news in the mineral world. This piece has several very small crystal and one a bit larger (about 8mm). These are flat habit and the structure is not as evident without good magnification. A fair example of the find that is not crazy expensive.
Elbaite - gem-clear Indicolite
Barra do Salinas Mining District, Coronel Murta
2.6 x .7 x .5 CM (thumbnail)
Deep blue transparent Indicolite crystal with a contrasting termination. An older specimen (1960's) this has a subtle zoning but is mostly a consistent blue color. In choice condition, this is an attractive thumbnail with complete termination and glassy luster.
A large, colorful Swiss alpine specimen featuring several well-crystallized species in scattered clusters. The centerpiece is the pink octahedral Fluorites many of which are gem clear. In addition, there are a few small colorless Fluorites and a few areas of dark nearly black Fluorite which is coated by and included with Chlorite. The specimen is also multi-colored fluorescent and amazing when examined under good magnification. Gem clear Quartz crystals show typical alpine habits and sharp transparent Epidote and Adularia crystals add contrast. Very pretty in person this looks even better as you look closer.
Fantastic form and a killer pseudomorph. This vintage Butte specimen shows perfectly the form of the original Covellite crystals which are almost fully replaced by Chalcocite. It looks like a tiny bit of Covellite may remain on the backside, but if so it is minor. This is an early specimen with excellent provenance, a tattered Roy Hopping (NYC Mineral dealer vintage 1898) label is included. This was also in the collection of Louis Zara (famed NYC collector, author and publisher of the Mineral Digest. His label is also included. The specimen is in exceptional condition, fully undamaged and attractive from almost any angle. Well-crystallized Covellite is remarkably rare worldwide with only two significant localities, both long closed. It is even less common to see a well-defined pseudomorph with sharp crystals like this.
A superb specimen of Wurzite from Butte, Montana that is a significant piece, despite being a "black ugly" one. Ex collection of Wallace Gould Levison which he obtained in 1903 from the Roth Collection. The locality detail is quite good for this period, this is attributed to the Gagnon Mine. The original price was $1.50 which was a lot of money at that time, I have not seen a better Wurtzite from Butte. Some Wurtzites from Butte are found to be Sphalerite after analysis, probably pseudomorphs. This was confirmed as Wurtzite but there is considerable Sphalerite as well. The Barite is present as small blades, a minor association. The Wurzites are clustered in shallow vugs and show the typical hexagonal form. The Levison label remains affixed to the specimen and we will provide a photocopy of the relevant page from the Levison collection ledger. This is a choice piece for any good Butte or Sulfide suite.
Digenite is one of the "real mineral collector" species, it is rare in decent crystals and usually sooty black (ie ugly). The world's best Digenites all came from Butte Montana long ago. They are classics and only seen from the breakup of old collections. This specimen is a complex cluster of small crystals and masses along with Enargite in small lustrous crystals and related Sulfides. The Digenite is mostly the sooty black sort which is often a coating of Chalcocite. This is a nice specie sample in good condition and very entertaining to study under magnification. It is not beautiful to most people but it is rare, old and something special for Sulfide lovers.
Apophyllite, Hubeite and Quartz
Fengjiashan Mine (Daye Mine), Daye County, Huangshi Pref.
9 x 6.9 x 4.8 CM (cabinet)
Windowpane type Apophyllite crystals mixed with sharp, transparent Quartz, and all dusted with tiny Hubeite crystals. A few of the smaller Quartz are Japanese twins. An attractive combination specimen in very good condition, the main Apophyllite crystals are undamaged. There is some minor chipping and damage on the outside edge where this was removed, overall in nice shape. The Hubeite, (this is the type locality), are numerous but tiny best seen with magnification. The Apophyllite is almost certainly Fluorapophyllite, it is what is known from here but as this piece has no confirming analysis we use only the group name. An attractive cabinet specimen with nice three-dimensional form. This find was made in 2006-7 and very little has come out since.