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Pachnolite with Ralstonite

#42510

Pachnolite with Ralstonite

#42510
Availability
Sold
Size
6 x 5 x 4.5 cm - Sm Cabinet 
Formula
NaCaAlF6·H2O (RRUFF)
Locality
Ivigtut Cryolite deposit, Ivigtut, Arsuk Fjord, Sermersooq, Greenland

Abundant needle-like colorless Pachnolite to 1mm in several vugs with tiny Ralstonite crystals in one vug.

Type Locality

Pachnolite

Formula
NaCaAlF6·H2
Crystal System
Monoclinic 
Crystal Habit
Prismatic, Twinning Common, Pseudo Orthorhombic 
Cleavage
Poor, None, None 
Luster
Vitreous - Greasy 
Color
colorless, white 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Uneven 
Hardness

Data courtesy of Webmineral.

Collection
Eaton Collection
Special Info
Type Locality

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