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Liskeardite & Bettertonite

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JYJ663412

Liskeardite & Bettertonite

Description Tabs

Description
Locality: 
Penberthy Croft Mine, St Hilary, Cornwall, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.6 × 1.1 × 1 cm
Description

P-XRD confirmed colourless masses and minor liskeardite. Rare mineral!

Analysis attached!

 

Mineral Data
What's on the rock

Liskeardite

Formula: 
[(Al,Fe)32(AsO4)18(OH)42(H2O)22]·52H2O
Strunz: 
8.DF.10
Crystal System: 
Orthorhombic
Hardness: 
0.0
Type Locality: 
Marke Valley Mine, Upton Cross, Linkinhorne, Liskeard District, Cornwall, England, UK

Bettertonite

Formula: 
Al6(AsO4)3(OH)9·16H2O
Crystal System: 
Monoclinic
Type Locality: 
Penberthy Croft Mine, St Hilary, Cornwall, England, United Kingdom
Analysis
Analysis Report - only: Liskeardite & Bettertonite