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Aldermanite Wavellite & Minyulite

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PJM39717

Aldermanite Wavellite & Minyulite

Description Tabs

Description
Locality: 
Toms Phosphate Quarry, Kapunda, South Australia, Australia
Size Range: 
Small cabinet (7-10 cm)
Size: 
3.8 × 7.7 × 5 cm
Description

Two large cavities in phocphatic gossan show a clear box work pattern.

Onto this dark foundation open sprays of white wavellite have grown following by clear blocky crystals of minyulite and then decorated with aldermanite crystals. A complex and fascinating specimen especially under magnification

Mineral Data
What's on the rock

Aldermanite

Formula: 
Mg5Al12(PO4)8(OH)22·32H2O
Strunz: 
8.DE.35
Crystal System: 
Orthorhombic
Hardness: 
2.0
Streak: 
White
Type Locality: 
Moculta Phosphate Quarry (Klemm's Quarry), Angaston, Barossa Valley, North Mt Lofty Ranges, Mt Lofty Ranges, South Australia, Australia...

Wavellite

Formula: 
Al3(PO4)2(OH,F)3·5H2O
Strunz: 
8.DC.50
Hardness: 
3.5 - 4.0
Streak: 
White.
Type Locality: 
High Down Quarry, Filleigh, North Devon, Devon, England, UK

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
Earthstones Australia

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