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Stevensite

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CSL81487

Stevensite

Rare Mineral

Description Tabs

Description
Locality: 
Preda Rossa Valley, Masino Valley, Sondrio Province, Lombardy, Italy
Size Range: 
Thumbnail (1-3cm)
Size: 
1.7 × 1.8 × 0.3 cm
Description

Stevensite is a rare member of smectite mineral group. It occurs as copper red coatings on grey-green greenschist matrix.

Mineral Data
What's on the rock

Stevensite

Formula: 
(Ca,Na)xMg3-x(Si4O10)(OH)2
Strunz: 
8/H.20-40
Crystal System: 
Monoclinic
Hardness: 
Colour: 
White, Pale Yellow, Pale Brown, Pale Pink
Streak: 
White
Type Locality: 
Bergen Hill, Bergen Co. & Hudson Co., New Jersey, USA
Isostructural with: 
Smectite Group
Loranth Minerals

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