Rare Mineral Specimens - search page
- Availability
- Sold
- Locality
- Rocabruna mines, Bruguers, Barcelona, Catalonia, Spain
- Formula
- Ca4MgFe3+4(PO4)6(OH)4·12H2O
- Size
- 5.5 x 3.5 x 2 cm - Sm Cabinet
- Tagged
- phosphate
Green crusts of Calcioferrite.
- Availability
- Available
- Price
- $195.00
- Reduced Price
- $75.00
- Locality
- Tolbachik Volcano, Kamchatka, Russia
- Formula
- NaCaMg3(AsO4)3
- Size
- 6 x 4 x 3.5 cm - Sm Cabinet
- Tagged
- arsenate
- Special Info
- XRD Confirmed
- Special Info
- EDS Confirmed
- Special Info
- Type & Only Locality
- Special Info
- Author's Material
Calciojohillerite is a greenish to yellowish to almost colorless well-shaped, terminated crystals (about 1 mm) combined in clusters / crusts on basalt scoria altered by fumarolic gas. The specimen is very rich. It is one of the few study specimens from Igor Pekov's collection used to characterize the new mineral. It is not yet published but was approved in 2016.
A more detailed locality is: Arsenatnaya fumarole, Second scoria cone of the Northern Breakthrough of the Great Tolbachik Fissure Eruption, Tolbachik volcano, Kamchatka, Russia.
- 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
- 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
- Pabellón de Pica, Chanabaya, Iquique, Tarapacá Region, Chile
- Formula
- CuCl(N3C2H2)(NH3) 0.25H2O
- Size
- 3.5 x 3 x 1.5 cm - Miniature
Beautiful blue acicular crystals to about 0.5mm in 1-1.5mm clusters. This is a new IMA mineral published in 2013 by Russian mineralogist.
- Availability
- Sold
- Locality
- Binghampton, New York, United States
- Formula
- CaTh(PO4)2
- Size
- 3 x 2.5 x 2 cm - Thumbnail
- Tagged
- phosphate
- Special Info
- Microprobed
Black crystaline specimen verified by microprobe. Ex. Parnau.
