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Gearksutite & Creedite

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SHS100366

Gearksutite & Creedite

Description Tabs

Description
Locality: 
Navidad Mine, Indé Municipality, Durango, Mexico
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.3 × 4.7 × 4.2 cm
Description

White gearsukite and creedite crystals on matrix

Mineral Data
What's on the rock

Gearksutite

Formula: 
Ca[Al(F,OH)5(H2O)]
Strunz: 
3.CC.05
Hardness: 
2.0
Streak: 
white
Type Locality: 
Ivigtut Cryolite deposit, Ivittuut (Ivigtut), Arsuk Fjord, Sermersooq, Greenland

Creedite

Formula: 
Ca3SO4Al2F8(OH)2·2H2O
Strunz: 
3.CG.15
Crystal System: 
Monoclinic
Hardness: 
4.0
Streak: 
white
Type Locality: 
Colorado Fluorspar Co. Mine, Wagon Wheel Gap, Mineral Co., Colorado, USA