Mineral Specimen and Product Inventory Search
- Availability
- Available
- Price
- $95.00
- Locality
- Mt. Pyalkimpor, Lovozero Massif, Kola Peninsula, Russia
- Formula
- (Na,☐)2Ca(Ti,Mg,Nb)4[Si2O7]2O2(OH,O)2(H2O)4
- Size
- 3.5 x 1.8 x 2 cm - Miniature
- Special Info
- Type Locality
- Special Info
- XRD Confirmed
- Special Info
- EDS Confirmed
Calciomurmanite is Na-Ca ordered analogue of murmanite. Murmanite does not contain calcium, only Na, by strict definition. Otherwise, you cannot tell these two minerals apart visually. Calciomurmanite crystals occur as thin plates and somewhat micaceous. The cleavage surfaces have a mother of pearl luster. This specimen was verified by Dr. Igor Pekov and was part of his study to define the mineral for publication. It is an approved IMA mineral, although not yet published.
- Availability
- Sold
- Locality
- Platteville dist., Grant Co., Wisconsin, United States
- Formula
- CaCO3
- Size
- 5 x 5 x 3.5 cm - Miniature
- Tagged
- carbonate
The specimen is of a single large rhombic crystals with good defined striations. It is not complete since it is cleaved on three of the sides.
- Availability
- Available
- Price
- $35.00
- Featured
- Featured in Special Editions
- Locality
- Platteville dist., Grant Co., Wisconsin, United States
- Formula
- CaCO3
- Size
- 4.5 x 4 x 6 cm - Sm Cabinet
- Tagged
- carbonate
A large, single "nailhead" crystal, nicely terminated with skeletal growth and striations.
- Availability
- Sold
- Locality
- Platteville dist., Grant Co., Wisconsin, United States
- Formula
- CaCO3
- Size
- 5 x 4.5 x 3 cm - Miniature
- Tagged
- carbonate
The specimen was personally collected by RJ Waidler in 1970. It is is basically micro Marcasite crystals with tiny 1mm colorless Calcite crystals.
- Availability
- Available
- Price
- $40.00
- Featured
- Featured in Special Editions
- Locality
- Tsumeb mine, Tsumeb, Namibia
- Formula
- CaCO3
- Size
- 12.5 x 5.5 x 6 cm - Cabinet
- Tagged
- carbonate
White interesting formation of at least two generations of Calcite, perhaps as a cast of a former mineral.
- Availability
- Sold
- Locality
- Elk Creek, Meade Co., South Dakota, United States
- Formula
- CaCO3
- Size
- 6.5 x 6 x 4.5 cm - Sm Cabinet
- Tagged
- carbonate
Yes, this is the matrix that you usually see the Baryte on from the famous Elk Creek area. Even without the Barite, this is a fine, well crystallized, specimen mounted with putty on black arcrylic base.
