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Gibbsite & Fluorapatite

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PDM679285

Gibbsite & Fluorapatite

Description Tabs

Description
Locality: 
Iron Duke Mine, Middleback Range, Eyre Peninsula, South Australia, Australia
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.3 × 6 × 3.7 cm
Description

Whitish to transparent crystals of gibbsite and fluorapatite of good lustre on a mixture of botryoidal Fe-, Mn- oxides.

Collected in 1982. Ex. Arnaud Gelders, #473.

 

Mineral Data
What's on the rock

Gibbsite

Formula: 
Al(OH)3
Strunz: 
4.FE.10
Hardness: 
2.5 - 3.0
Streak: 
White
Type Locality: 
Richmond, Berkshire Co., Massachusetts, USA

Fluorapatite

Formula: 
Ca2Ca3(PO4)3F
Strunz: 
8.BN.05
Crystal System: 
Hexagonal
Hardness: 
5.0
Streak: 
White
Type Locality: 
Sauberg Mine, Ehrenfriedersdorf, Erzgebirge, Saxony, Germany

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