SOLD Quartz replacing Elbaite
stock #SOLD 19.1-346
Urubu Mine, Monte Bello, Itinga, Jequitinhonha Valley
5.3 x 2.4 x 1.6 CM (cabinet)
An amazing example of this rare Pseudomorph where Quartz is replacing and overgrowing a tourmaline. A mint green Elbaite crystal is almost completely replaced with just an exterior skin remaining. The core is now pure quartz and the original termination is capped with terminated Quartz prisms. This was found several decades ago and stands apart as an especially esthetic example. The front view of this is the obvious display side but the back and underside are especially interesting as they show the transition well. A fine addition for any Tourmaline or Quartz suite, and almost never available on the market.
A sharp, complete and perfect textbook form Cobaltite crystal from the classic locale of Tunaberg (Sweden). The worlds best Cobaltites have come from two localities in Sweden, Tunaberg and Hakansboda. This has a trace of Chalcopyrite on one face which is more typical of Tunaberg specimens. Well above average quality, the luster and form are impeccable.
Duftite on Quartz
Black Pine Mine, Flint Creek Valley, John Long Mts., Granit Co.
12.8 x 9.3 x 4.2 CM (cabinet)
A large plate of Quartz crystals up to 2 CM in size are thickly coated with Duftite in olive-green spheres. An old specimen from the Black Pine Mine that is famed for the great Veszelyite finds there. I have not seen another specimen quite like this from any USA locality it looks like a dark botryoidal Tsumeb Duftite on a Montana Quartz. An unidentified coating of brighter yellow is also present and adds some contrast. it is a very significant and sizable Duftite specimen with a lot of character. In good condition overall there are a few tiny chips on some Quartz but most are perfect and undamaged. The Black Pine mine has a complex and wonderful mineral assemblage including many uncommon associates. This piece is significant for the locale is the best USA Duftite I know of. Ex Chris Amo collection.
A super sharp cluster of dark Mercury rich Tetrahedrite crystals on contrasting matrix. A classic specie and locale, this Schwatzite shows perfectly the form and habit. The individual crystals are roughly 1 CM which is very large to be this sharp and perfectly defined. Most larger crystals are more crude or have secondary coatings. Schwatzite is not a specie but a variety of Tetrahedrite which can have Silver, Bismuth or other enriching elements and hence distinctive appearance. The Mercury rich variety seems to always have this form and color and as far as I know is only found at this locality. A choice, very old and undamaged specimen.
Vayrynenite -rare gem crystal
Shengus (Shingus) Haramoush Mts. Skardu District
1.7 x 1.3 x .6 CM (thumbnail)
The rare gem mineral Vayrynenite has been found in a very few places worldwide, but by far the best have come from Pakistan, in small pockets sporadically over the past thirty years. This is from a pocket found in 2017 which was the last good find. Good orange red color, transparent to translucent showing very rough, crude terminations that at first glance look broken. These seem to have been etched and recrystallized at some point in the past. Well defined striations on the prism faces, this has well above average color, luster and transparency in a simple thumbnail.
A super esthtic, pale blue gem Topaz on a twin Microcline base and a small Quartz crystal on the termination. In excellent condition as seen, this is an especially esthetic Spitzkoppe specimen, this locality has produced the best Topaz from Namibia. The Topaz has bright glassy luster and fine striations across the prism faces. A top notch display grade Topaz that is fully transparent and undamaged.
An extraordinary and unusually large example of this very rare Zeolite from the type locality in Japan. Yugawarilite crystals are rarely seen over 5-6 mm in size, however these are over 1 CM. Transparent and with bright luster on the flat faces, this has crystals arranged in a flat stacks and sheave-like clusters. A great addition to any Zeolite suite or collection of Japanese minerals.
Mina Ojuela, Mapimi
5 x 4.1 x 1.1 CM (miniature)
Inter-connected half-balls of bright green Adamite forming a plate with minimal matrix. The balls have bright luster and are composed of distinct small curved crystals. Early 1960 vintage specimen from Mina Ojuela, the backside of this is flattened being contacted with a minor amount of adhering matrix. The front is in fine, undamaged condition. Distinctly different from more recent finds and brightly fluorescent.