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1604 specimens found
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Pyrargyrite with Polybasite, Siderite, Pyrite
stock #18.1-409
Porco, Agua de Cstilla, Quijarro Province
Potosi, Bolivia
3.4 x 2.2 x 1.1 CM (small miniature/ large thumbnail (toenail))
price: $400


A lustrous cluster of mostly Pyargyrite crystals that at first glance appear a silvery black color. Strong light shows some brilliant red zones of ruby silver, and with magnification are some classic twinned Polybasite crystals as well. Minimal matrix, the associated Sulphides are only seen with magnification. Some edge chipping is noted, not easy to see by naked eye (this is a brittle mineral ) but the main crystals are in fine condition, some with textbook forms. The Pyrargyrites have some unusual habits on this piece, it is an attractive small miniature with very bright flash., could trim to a very strong thumbnail if desired
Tremolite (Chantoyant crystals)
stock #18-AX-18-247
Pierrpont, St. Lawrence County
New York, United States
5.9 x 4.1 x 3 CM (cabinet)
price: $290


Sharp, glassy, with catseye effect luster and very well formed, a pure mass of Tremolite crystals. From the now classic Pierrepont locality in St Lawrence county New York, this has fine deep olive green color and is in excellent condition. Collected more 40 years ago by S. Alverson, the chantoyance or catseye effect is striking in person.
Diaspore - classic US
stock #8.1-415
Chester Emery Mine, Chester, Hampshire County
Massachusetts, United States
4.4 x 3.3 x 2.4 CM (miniature)
price: $175


Nearly pure, this is almost all Diaspore crystals with a small area of Amesite matrix, a classic Chester Emery Mine specimen with good lilac color. Typical tightly bundled crystals that have showing over 2 CM across. A single red Rutile needle is also present, Choice condition the Diaspore of this mine were for a time the best known in the world and were very sought after. Later finds eclipsed these but the Chester habit is still unique and it is the type locale for Amesite. A nice specimen that is better than just a locality piece, classic and choice.
Galena with Sphalerite , Calcite
stock #17.1-240
Pitcher, Ottawa County
Oklahoma, United States
9.3 x 5.2 x 4.4 CM (cabinet)
price: $350


Classic old Pitcher Field (Tri State District) Galena. An esthetic cluster of grey patina cubes with modified corners on a drusy Sphalerite covering the Chert matrix. In excellent condition, the Galena arrangement is very three dimensional and the cube at the top on the tower is 2 CM in diameter. The backside of the matrix is covered with larger Sphalerites some of which are red and lustrous. The Tri state area was an incredibly productive zone into the early 1960 period when it shut down. At the time these specimens were plentiful (although better p[ieces were always much less common). Today these are all long gone and good esthetic material is quite rare. Far better in person, this is not at all average.
Lazulite with Wardite, gemmy Siderite and Quartz
stock #18-AX-27-025
Rapid Creek, Dawson Mining District
Yukon Territory, Canada
8.3 x 5.2 x 3.6 CM (cabinet)
price: $850


A very fine, large block of matrix well crystalized on the two largest sides with lustrous blue Lazulite crystals. One side has the association of many transparent golden Siderite crystals and clear Quartz, the other side has more Wardite crystals also very clear. with colorless to blue green hues. The rare phosphate deposits at Rapid creek are famed for the incredible Lazulite and this is a very fine showy example. The overall condition is excellent, strong magnification shows just a few chipped crystals in one area but by naked eye it is perfect. Especially under strong lighting the color is an intense electric blue, and the sparkling luster is brilliant. The Rapid creek Lazulltes are not the largest but they are the finest, sharpest, most colorful worldwide, and are especially gemmy. An excellent display cabinet specimen.
Rosasite on Smithsonite with Calcite
stock #18-AX-19-146
Silver Bill Mine, Gleason, Dragoon Mts. Cochise County
Arizona, United States
4.3 x 3.8 x 2.2 CM (miniature)
price: $90


Spheres of blue Rosasite scattered on Smithsonite and some Calcite. A good locality piece that is especially fine under magnification. The Silver Bill mine has a long history but is not very well known outside of Arizona. It has been a source of Wulfenite and other species as well as Rosasite.
Anglesite -very large crystal, classic locale
stock #15.1-675
Ahumada Mine, Los Lamentos
Chihuahua, Mexico
4.3 x 3.2 x 1.2 CM (miniature)
price: $675


For the Ahumada mine (los Lamentos) this is a huge crystal of Anglesite for that mine, and is partly altered to Cerussite on the surface. Ex Johansson collection, this is an older piece, pre 1940. In very good condition and well terminated as seen, (crudely doubly terminated) the crystal has retained the textbook form of the Anglesite. Los Lamentos is world famed for fine Wulfenite, Vanadinite and Descloisite but other Lead secondaries have been found over the long history of the mine. Large crystals of Anglesite are usually up to 2 CM, but at 4.3 CM this is one of the largest I have ever seen. A choice and substantial Mexican classic.
Azurite
stock #15.1-598
Tsumeb
Otjikoto Region, Namibia
3.1 x 2.7 x 2.4 CM (small miniature/ large thumbnail (toenail))
price: $450


A choice early Azurite from Tsumeb formerly in the Johannson collection obtained in trade with Harvard before 1933. Thick rectangular blades in a mass on minimal matrix. Excellent luster and a somewhat unusual form, this has some chipping and some rehealed areas that can hidden by angle of display. The edge modifications and faces on this Azurite are very unusual for Tsumeb and in fact for any locality.
1604 specimens found
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