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Stokesite Albite & Microlite

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ESM574939

Stokesite Albite & Microlite

Rare Mineral

Description Tabs

Description
Locality: 
Urucum Mine, Galileia, Minas Gerais, Brazil
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
1.7 × 2.5 × 1.3 cm
Description

Spherical cluster of platy stokesite crystals with brown microlite crystals on albite matrix

Mineral Data
What's on the rock

Stokesite

Formula: 
CaSn[Si3O9]·2H2O
Strunz: 
9.DM.05
Hardness: 
6.0
Streak: 
White
Type Locality: 
Stamps and Jowl Zawn (Roscommon Cliff), Cliff outcrops, Botallack, St Just, St Just District, Cornwall, England, UK

Albite

Formula: 
NaAlSi3O8
Strunz: 
9.FA.35
Crystal System: 
Triclinic
Hardness: 
6.0 - 6.5
Streak: 
White
Type Locality: 
Finnbo (Finbo), Falun, Dalarna, Sweden