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Bannisterite

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GMN659189

Bannisterite

Description Tabs

Description
Locality: 
Arschitza Mine, Iacobeni, Suceava County, Romania
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.5 × 3.8 × 1.3 cm
Description

Brown lamellas on matrix of this rare mineral.

Mineral Data
What's on the rock

Bannisterite

Formula: 
Ca0.5(K,Na)0.5(Mn,Fe,Zn)10(Si,Al)16O38(OH)8·5.5H2O
Strunz: 
9.EG.75
Crystal System: 
Monoclinic
Hardness: 
4.0
Type Locality: 
Benallt Mine (Tyddyn Meirion mine; Ty Canol mine), Rhiw, Llanfaelrhys, Lleyn Peninsula, Gwynedd (Caernarvonshire), Wales, UK

Seller Information

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