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Stannomicrolite On Stokesite

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SHS79044

Stannomicrolite On Stokesite

Description Tabs

Description
Locality: 
Urucum Mine, Galileia, Minas Gerais, Brazil
Size Range: 
Thumbnail (1-3cm)
Size: 
1.2 × 0.7 × 0.7 cm
Description

Stannomicrolite on stokesite

Mineral Data
What's on the rock

Stannomicrolite

Variety Of: 

Stannomicrolite (of Hogarth 1977)

Formula: 
(Sn,Fe,Mn)2(Ta,Nb,Sn)2(O,OH)7
Strunz: 
4.DH.15
Hardness: 
4.5 - 5.5

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