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Mineralpedia Details for Gjerdingenite-Ca

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Gjerdingenite-Ca

Gjerdingenite-Ca

Formula
K2(H2O)2Ca(Nb,Ti)4(Si4O12)2(O,OH)4ยท4H2
Crystal System
Monoclinic 
Crystal Habit
Pseudomorphous 
Cleavage
None, None 
Luster
Vitreous (Glassy) 
Color
white, pale brown, pinkish brown 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Uneven 
Hardness
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Gjerdingenite-Ca from Pegmatite #61, Karnasurt Mt., Lovozero Massif, Kola Peninsula, Russia

Gjerdingenite-Ca
            from Pegmatite #61, Karnasurt Mt., Lovozero Massif, Kola Peninsula, Russia
Special Info
Type Locality,XRD Confirmed,EDS Confirmed,Author's Material,Type Material

A yellow crystal fragment, less than 1mm, in capsule. Identified by Dr. Igor Pekov. This specimen is Author's material.

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