Collectible Mineral Specimens Under $50
- Availability
- Sold
- Locality
- Guanajuato, Guanajuato, Mexico
- Formula
- Ag2S
- Size
- 1.2 x 0.5 x 0.5 cm - Thumbnail
- Tagged
- sulfide, silver
Euhedral crystal of Acanthite with complex crystal faces.
- Availability
- Available
- Price
- $20.00
- Locality
- Kamariza mine, Laurium, Greece
- Formula
- Zn2AsO4(OH)
- Size
- 4 x 3 x 3 cm - Miniature
- Tagged
- arsenate
Bright green crystals of Adamite to 1mm in large clusters.
- Availability
- Available
- Price
- $30.00
- Locality
- Bou Skour mine, Ourzazate prov., Morocco
- Formula
- Cu2+6Y(AsO4)3(OH)6ยท3H2O
- Size
- 1.7 x 1.5 x 1 cm - Thumbnail
- Tagged
- arsenate, copper
- Special Info
- Type Locality
Bluish green acicular crysatls in bunches to 1mm.
- Availability
- Sold
- Locality
- Merelani Hills, Umba Valley, Lelatema Mts., Arusha, Tanzania
- Formula
- Mn2+S
- Size
- 3 x 3 x 2.5 cm - Thumbnail
- Tagged
- sulfide
Black partial large crystal.
- Availability
- Sold
- Featured
- Featured in Special Editions
- Locality
- Harding mine, Taos Co., New Mexico, United States
- Formula
- NaAlSi3O8
- Size
- 18 x 10 x 8 cm - Cabinet
- Tagged
- pegmatite mineral
- Special Info
- Illustrated in London's book "Pegmatites"
This specimen from the border zone represents an example of wall-rock interaction with the pegmatite solution as it was injected into the country rock. The white portion is the pegmatite and is composed of Albite, Muscovite, Beryl. The black portion is the wall rock, which through metasomatism, was altered to Schorl tourmaline.
The specimen is illustrated in "Pegmatites" on page 123 Fig. 7-12d.
- Availability
- Sold
- Locality
- Kola Peninsula, Russia
- Formula
- Fe2+3Al2(SiO4)3
- Size
- 4.8 x 3.5 x 2.5 cm - Miniature
Large Almandine crystals to 2.2cm.