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Rankachite

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CAM170076

Rankachite

Type Locality

Description Tabs

Description
Locality: 
Clara Mine, Oberwolfach, Freiburg Region, Baden-Württemberg, Germany
Size Range: 
Thumbnail (1-3cm)
Size: 
2.3 × 1.8 × 1.3 cm
Description

Dark golden-brown acicular rankachite crystals in spheres and radiating aggregates very rich on the matrix. A very good example of this very rare species from the Type Localty (and still it's only locality worldwide).

Mineral Data
What's on the rock

Rankachite

Formula: 
Ca0.5(V4+,V5+)(W6+,Fe3+)2O8(OH)·2H2O
Strunz: 
7.GB.25
Crystal System: 
Orthorhombic
Hardness: 
2.5
Type Locality: 
Clara Mine, Rankach valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany
Cartils Minerals

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