Search Fine Minerals for Sale Online - The Arkenstone
Displaying 1-5 of 5 results.
Nan Dan, Guang Xi Province, China
Small Cabinet, 7.3 x 4.6 x 3.6 cm
This is a rare tetrahedrite from China, from a new find apparently. It has sharp, textbook crystals to over an inch, some coated on oriented faces by incredibly metallic, bright chalcopyrite in a micro-thin layer. It looks like the tetrahedrite crystals were dipped in gold plate, on those faces. Small calcites are also attached for texture.The piece is nearly complete all around, with just a small contact area on bottom. Although a fine specimen in its own right, I bought this in part because it was a freak piece , to my eyes, just a single nice specimen from "a new mine" in the rich Nan Dan area where so many calcites have come from. Time will tell whether more come, or none...
Casapalca Mine, Lima, Peru
Cabinet, 10.3 x 9.8 x 7.7 cm
An exceptional specimen from old finds here, probably in the 1980s, which features huge tetrahedrite crystals to several inches on size in combination with aesthetic quartz crystals. The specimen is in very good shape, nearly pristine and complete most of the way around the back even. It is a piece of high significance, I would say, for both the lcoality and the species. Most that you see fomr here are either smaller crystals of no significance or , in some occasions still today, large crystals to this size and more but very flattenned. I rarely see any with such 3-dimensional geometric form, much less in association with these great quartz crystals which really covnert the piece from "just" an important tetrahedrite into a display specimen on another level entirely to my eye. Ex. Francis Allegra collection.
Concepcion del Oro, Zacatecas, Mexico
Cabinet, 10.2 x 9.1 x 5.2 cm
This attractive plate features the sharp lines of superbly crystallized, large, very lustrous, tetrahedrites, to 3.25 cm in length. These crystals visibly have complicated striations that give them a lot of character and dimensionality, plus they stand out more from the matrix than you normally see in Mexican tetrahedrites. In fact, the quality is so good here, they are of a quality you associate with Peru (but the overall look is distinct). This is certainly one of the best examples we have seen, for quality. . . there are bigger crystals to be sure, but this association on sparkly pyrite, with dramatic individualized crystals, makes the piece.
Mina Maria, Puerto de Cananea, Sonora, Mexico
Cabinet, 10.8 x 9.8 x 7.5 cm
This specimen has a metallic golden brightness to it that looks manmade-brighter and more metallic even than modern Peruvian material can be. It is an old specimen from the collection of the late Dr. Richard Heck. Displayed one way, there is a large twin to the left, and the piece balances standing up like a triangle. Displayed on its side, the large, complex chalcopyrite twin graces the bottom, and smaller crystals rise above it to form a pagoda of sharp, golden-brassy color. So bright is it, that it leaps out of a case as the most metallic mineral in the Heck collection, amongst sphalerites, pyrites, and other species. It is just vividly colorful and brilliantly lustrous. One of the highlights of this fine old Mexican mineral collection. Joe Budd photos.
Animon Mine,Huaron District,Peru
Small Cabinet, 9 x 7.8 x 5.5 cm
Large, pyramidal, slate-gray crystals of Chalcopyrite coated with Tetrahedrite , to 3.5 cm in length, have grown in and around translucent, pastel gray, crystals of quartz which reach the same length. There does not appear to be any damage or contact except at the extreme periphery of this matrix specimen. The cluster just floats up there, perfect as can be! Very rare in such aesthetic form!