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Rhabdoborite-(V) & Berzeliite

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GMN720367

Rhabdoborite-(V) & Berzeliite

Type Locality

Description Tabs

Description
Locality: 
Arsenatnaya Fumarole, Second Scoria Cone, Great Fissure, Tolbachik Volcano, Kamchatka Krai, Russian Federation
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 2 × 2 cm
Description

Bunches to brushes of yellowish acicular crystals.

Associated with colourless , white anhydrite crystals and light yellow berzeliite crystals.

Mineral Data
What's on the rock

Rhabdoborite-(V)

Formula: 
Mg12(V5+,Mo6+,W6+)1 · 5O6{[BO3]6-x[(P,As)O4]xF2-x} (x < 1)
Crystal System: 
Hexagonal
Type Locality: 
Arsenatnaya fumarole, Second scoria cone, Northern Breakthrough (North Breach), Great Fissure eruption (Main Fracture), Tolbachik volcano, Kamchatka Krai, Russia
Isostructural with: 
Rhabdoborite-(W)

Berzeliite

Formula: 
NaCa2(Mg,Mn2+)2(AsO4)3
Strunz: 
8.AC.25
Crystal System: 
Isometric
Hardness: 
4.5 - 5.0
Type Locality: 
Långban, Filipstad, Värmland, Sweden

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