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Unnamed Psm Minyulite

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GND59086

Unnamed Psm Minyulite

Rare Mineral

Description Tabs

Description
Locality: 
Toms Phosphate Quarry, Kapunda, South Australia, Australia
Size Range: 
Small cabinet (7-10 cm)
Size: 
9 × 7 × 3.5 cm
Description

This is a very unusual pseudomorph specimen where radiating groups of minyulite crystals have been replaced by an amorphous phoshate gel which has turned the minyulite from clear to white while retainining their crystal habit.

No further information on the phosphate gel material seems to be currently available. The specimen sits well for display and is undamaged.

Mineral Data
What's on the rock

Minyulite

Formula: 
KAl2(PO4)2(OH,F)·4H2O
Strunz: 
8.DH.05
Crystal System: 
Orthorhombic
Hardness: 
3.5
Type Locality: 
Minyulo Well, Dandaragan, Dandaragan Shire, Western Australia, Australia
Gondwana Minerals