











Mineral Specimen and Product Inventory Search
- Availability
- Sold
- Locality
- Mt. Cobalt mine, Mt Isa, Queensland, Australia
- Formula
- AlAsO4ยท2H2O
- Size
- 5 x 4 x 2.5 cm - Miniature
- Tagged
- arsenate
Purplish cobaltoan Mansfieldite with orange to pinkish Smolyaninovite and possible Heterogenite.
- Availability
- Available
- Price
- $30.00
- Reduced Price
- $20.00
- Locality
- Elk Creek, Meade Co., South Dakota, United States
- Formula
- FeS2
- Size
- 4.5 x 3.5 x 3.5 cm - Miniature
- Tagged
- sulfide
Small Marcasite crystals in Worm-like formations. This is a very unique crystal habit for this area.
- Availability
- Available
- Price
- $25.00
- Locality
- Elk Creek, Meade Co., South Dakota, United States
- Formula
- FeS2
- Size
- 4 x 4 x 4 cm - Miniature
- Tagged
- sulfide
Spheroidal golden Marcasite crystals to 2mm with yellow Calcite.
- Availability
- Available
- Price
- $25.00
- Locality
- Elk Creek, Meade Co., South Dakota, United States
- Formula
- FeS2
- Size
- 4.5 x 4 x 3 cm - Miniature
A cluster of Marcasite crystals sits tucked in amongst golden Calcite crystals, with various Marcasite crystals scattered on the Calcite
- Availability
- Sold
- Locality
- Pleasant Ridge, Indiana, United States
- Formula
- FeS2
- Size
- 4.3 x 0.5 x 0.7 cm - Miniature
- Tagged
- sulfide
A Pyrite "bar" elongated by stacked cubic Pyrite crystals with an overgrowth of epitixial crystals of Marcasite.
- Availability
- Available
- Price
- $125.00
- Locality
- Misburg, Hanover, Hanover, Lower Saxony, Germany
- Formula
- FeS2
- Size
- 3 x 2.5 x 1.5 cm - Thumbnail
- Tagged
- sulfide
Spear-head habit and twinned Marcasite crystal. In-hand the Marcasite glitters a gold color from thousands secondary epitaxially oriented micro crystals. It's a very nice piece.