Search Archived Mineral Specimens
- Availability
- Sold
- Locality
- Quiruvilca mine, Santiago de Chuco prov., La Libertad dept., Peru
- Formula
- As2S3
- Size
- Miniature 3.5x3.2x1cm
- Tagged
- sulfide
Rich orange, crude prismatic crystals from 4 to 8mm in a cluster on Pyrite. The luster is somewhat dull and the color is a little less orange than the photos show.
- Availability
- Sold
- Locality
- Oro Grande, Otero Co., New Mexico, United States
- Formula
- K(AlSi3)O8
- Size
- Miniature 5x5x5cm
A superb, very sharp, perfect crystal 2.9cm across in porphyry matrix.
- Availability
- Sold
- Locality
- South Betroka, Madagascar
- Formula
- K(AlSi3)O8
- Size
- Miniature 4x3x3cm
Excellent glassy light yellowish green, gemmy total crystal.
- Availability
- Sold
- Locality
- South Betroka, Madagascar
- Formula
- K(AlSi3)O8
- Size
- Thumbnail 1.5x1x1cm
Excellent gemmy Orthoclase, very rare worldwide for gem quality.
- Availability
- Sold
- Locality
- Potosi, Bolivia
- Formula
- K(AlSi3)O8
- Size
- SmCabinet 3.5x7x1cm
- Tagged
- twinned crystal
Cream colored twinned Orthoclase crystal that is a textbook example of a Carlsbad twin with interpenetrating sections seperated by a single plane. There are also a couple Pyrite cubes to 3-4mm partially embedded in the Orthoclase, adding to the oddness of the piece.
- Availability
- Sold
- Locality
- Skardu dist., Balistan, Northern Areas, Pakistan
- Formula
- K(AlSi3)O8
- Size
- SmCabinet 6x4x3cm
- Special Info
- EDS Confirmed
Colorless, impressive crystal of Orthoclase showing four large faces and a cleavage plane. If you haven't a good feldspar crystal in your collection, you might consider this one - EDS confirmed.
