Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales

Holtedahlite & Althausite

Views:
Watches:
SKY841707

Holtedahlite & Althausite

Type Locality

Description Tabs

Description
Locality: 
Tingelstadtjern Quarry, Modum, Viken, Norway
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.6 × 1 × 0.8 cm
Description

Colourless crystal aggregates of holtedahlite lying in a matrix of colourless althausite and yellow serpentine.

Ex Vandenbroucke Museum collection from Waregem, Belgium.

Mineral Data
What's on the rock

Holtedahlite

Formula: 
Mg2(PO4)(OH)
Strunz: 
8.BB.20
Crystal System: 
Trigonal
Hardness: 
4.5 - 5.0
Colour: 
Colourless
Type Locality: 
Tingelstadtjern Quarry, Modum, Buskerud, Norway
Dimorph Of: 

Althausite

Formula: 
Mg4(PO4)2(OH,O)(F,☐)
Strunz: 
8.BB.25
Hardness: 
3.5 - 4.0

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

Seller Information

Payment options: offline, paypal_wpp, paypal_wps