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Althausite With Talc

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CLB141331

Althausite With Talc

Type Locality

Description Tabs

Description
Locality: 
Tingelstadtjern Quarry, Modum, Viken, Norway
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.4 × 5 × 3.6 cm
Description

Nice type locality specimen with grayish althausite (type locality), platy white talc & green serpentine. Brownish xenotime (? - visual ID).

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

Talc

Formula: 
Mg3(Si4O10)(OH)2
Strunz: 
9.EC.05
Crystal System: 
Triclinic
Hardness: 
1.0
Streak: 
White

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