Rare Mineral Specimens - search page
- 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
- Basic Refractories mine, Gabbs, Nye Co., Nevada, United States
- Formula
- Cu2Mg2CO3(OH)6·2H2O
- Size
- 5 x 4 x 2 cm - Miniature
- Tagged
- carbonate, copper
- Special Info
- Type Locality
Great deep blue color of this rather rare copper-magnesium carbonate found at only 6 to 8 localities worldwide.
- Availability
- Sold
- Locality
- El Teniente, Rancagua, Cachapoal, Chile
- Formula
- Cu18Al2(AsO4)4(SO4)3(OH)24·36H2O
- Size
- 6.5 x 5 x 3.5 cm - Sm Cabinet
- Tagged
- arsenate, copper
Blue-green platy crystals to 2mm.
- Availability
- Available
- Price
- $25.00
- Locality
- Wheal Phoenix, Linkinhorne, Liskeard dist., Cornwall, England
- Formula
- Cu2+Fe3+6(PO4)4(OH)8·4H2O
- Size
- 4.5 x 3.5 x 1.5 cm - Miniature
- Tagged
- phosphate, copper
Tiny green crystals in vugs.
- Availability
- Sold
- Locality
- Victoria vein, Cerro Piojo, Salamandra Project area, Durango mun., Durango, Mexico
- Formula
- Fe3+2Sb3+(SiO4)2(OH)
- Size
- 6 x 5 x 3.5 cm - Sm Cabinet
Chapmanite is an alteration product of antimony minerals. This specimen shows earthy lime green crusts of Chapmanite, which has been verified by XRD. The first photo is the true color, which is a bit washed out of the other photos.
- Availability
- Available
- Price
- $255.00
- Locality
- Zorge, Bad Sachsa, Harz, Lower Saxony, Germany
- Formula
- PbSe
- Size
- 3.5 x 2 x 2 cm - Miniature
- Special Info
- Microprobed
There are two specimens: the mineral and the sliced and mounted specimen used for the identification of the mineral. The specimen is sliced in preparation for the microbrobe mount. It also carries and old inked label.
