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Elliottite & Angastonite

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SKY949118

Elliottite & Angastonite

Type Locality

Description Tabs

Description
Locality: 
Penrice Quarry, Angaston, Barossa Valley, Mount Lofty Ranges, South Australia, Australia
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 4 × 2 cm
Description

Outstanding acicular white crystals of the very rare phosphate mineral angastonite intermixed with the extremely rare new mineral elliottite (IMA 2021-113) from the type locality for both minerals in Penrice quarry, Angaston, Australia. Both minerals are visually indistinguishable

Ex. Erich Laskowski collection.

Mineral Data
What's on the rock

Elliottite

Formula: 
NaMgAl3(PO4)2F6 · 9H2O
Strunz: 
8.DM.
Crystal System: 
Monoclinic
Type Locality: 
Tom's Quarry, Kapunda, North Mt Lofty Ranges, Mt Lofty Ranges, South Australia, Australia...
Dimorph Of: 

Penriceite

Formula: 
[Mg(H2O)6][Na(H2O)2Al3(PO4)2F6] · H2O
Strunz: 
8.DM.

Angastonite

Formula: 
CaMgAl2(PO4)2(OH)4·7H2O
Strunz: 
8.DL.25
Hardness: 
2.0 - 0.0
Streak: 
White
Type Locality: 
Penrice marble quarry, Angaston, Barossa Valley, North Mt Lofty Ranges, Mt Lofty Ranges, South Australia, Australia

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