Fine Mineral Specimens Over $50
- Availability
- Sold
- Locality
- Schneeberg dist., Erzgebirge, Saxony, Germany
- Formula
- Ag2S
- Size
- 7 x 7 x 5 cm - Sm Cabinet
- Tagged
- sulfide, silver
Cabinet size specimen with a large cavity filled with 1-4mm steely grey Acanthite crystals in abundance with good Calcite crystals. Excellent specimen from this classic German locality.
- Availability
- Sold
- Locality
- Keeley-Frontier mine, Cobalt dist., Ontario, Canada
- Formula
- Ag2S
- Size
- 3.3 x 2.8 x 1.0 cm - Miniature
- Tagged
- sulfide, silver
Soft, sectile mass of Acanthite with many crude forms of cubic crystals. The cluster at the tip is 7mm across. The specimen comes from the historic cobalt/silver Keeley-Frontier mine located in one of the largest silver mining districts in the world. The mine produced an incredible 3.3 million pounds of cobalt and 19.1 million ounce of silver. There is associated Calcite in mass and as crystals, a clear indication that the specimen was never etched.
- Availability
- Sold
- Locality
- Hilltop mine, Organ dist., Dona Ana Co., New Mexico, United States
- Formula
- PbTe
- Size
- 3.5 x 3 x 1.5 cm - Miniature
- Tagged
- tellurium
Silvery crystal grains to 3mm in matrix, rich specimen.
- Availability
- Available
- Price
- $95.00
- Reduced Price
- $50.00
- Locality
- Tsumeb mine, Tsumeb, Namibia
- Formula
- PbSO4
- Size
- 6.5 x 5 x 5 cm - Sm Cabinet
Colorless Anglesite crystals from 1 to 1.5cm in and on a sulfide rich matrix full of interesting unknowns, but probably Pyrite at the yellow arrow and Malachite and the blue arrow. At the red arrow are murky colorless crystals with blue inclusions. Possibly some Covellite on the specimen. See prov. tab - Ulrike Kahn label
- Availability
- Available
- Price
- $95.00
- Locality
- near Wilmington, Delaware, United States
- Formula
- Mg3Si2O5(OH)4
- Size
- 6.5 x 4 x 2.5 cm - Sm Cabinet
- Special Info
- Antique Specimen
This is an old, antique specimen with a John H. Caswell label. The number on the specimen matches the label number. The name given to the mineral back then was "Baltimorite", which later was defined as Antigorite. The purple I assume is due to chromium tremolite. See prov. tab for label scan. As is typical of Caswell, the origin of the specimen was written on the back of his label. In this case it was A.C. Beatty.
- Availability
- Available
- Price
- $55.00
- Locality
- Michigamme, Marquette Co., Michigan, United States
- Size
- 8 x 6 x 5 cm - Sm Cabinet
Aphrosiderite is a replacement of Almadine garnet by chlorite. Aphrosiderite has been a discredited mineral, but most Michigan collectors enjoy these specimens. This, I think, is a good specimen. The crystals are to 2.5cm and are very distinct. There is one cast, and there is four crystals.
