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Althausite & Lizardite

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SHS138308

Althausite & Lizardite

Description Tabs

Description
Locality: 
Vikersund, Modum, Viken, Norway
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.3 × 5.4 × 2.6 cm
Description

Althausite and lizardite in hydrotalkite, old piece of the 70s

Mineral Data
What's on the rock

Althausite

Formula: 
Mg4(PO4)2(OH,O)(F,☐)
Strunz: 
8.BB.25
Crystal System: 
Orthorhombic
Hardness: 
3.5 - 4.0
Colour: 
Pale gray, reddish brown
Type Locality: 
Tingelstadtjern Quarry, Modum, Buskerud, Norway
Dimorph Of: 

Holtedahlite

Formula: 
Mg2(PO4)(OH)
Strunz: 
8.BB.20
Hardness: 
4.5 - 5.0

Lizardite

Formula: 
Mg3(Si2O5)(OH)4
Strunz: 
9.ED.15
Hardness: 
0.0
Type Locality: 
Eastern Cliff, Kennack Cove (Kennack Sands), Kennack, Grade-Ruan, Lizard Peninsula, Cornwall, England, UK