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Ferroan Calcite & Phillipsite

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PJM79312

Ferroan Calcite & Phillipsite

Ex J & S Mommers Collection

Description Tabs

Description
Locality: 
Corporation Quarry, Clifton Hill, Collingwood, Yarra, Victoria, Australia
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 2.7 × 2.1 cm
Description

A most unusual looking calcite  variety ferroan, a spray of tan coloured calcite crystals rising from a minute point of attachment to form an indented triangular cluster at its peak. A few white twin phillipsite crystals rest amongst the shuggy calcite terminations.

Collected by the seller from the remanents of the quarry along Merri creek in 1982.

Mineral Data
What's on the rock

Ferroan Calcite

Variety Of: 

Calcite

Formula: 
CaCO3
Strunz: 
5.AB.05
Hardness: 
3.0
Formula: 
(Ca,Fe)CO3
Hardness: 
0.0

Phillipsite

Synonym Of: 

Phillipsite-Ca

Formula: 
(Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32 . 12H2O
Strunz: 
9.GC.10
Hardness: 
4.0 - 5.0

Phillipsite-K

Formula: 
(K,Na,Ca0.5,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O
Strunz: 
9.GC.10
Hardness: 
4.0 - 5.0

Phillipsite-Na

Formula: 
(Na,K,Ca0.5,Ba0.5)4-7[Al4-7Si12-9O32]·12H2O
Strunz: 
9.GC.10
Hardness: 
4.0 - 5.0
Group Parent: 
Zeolite Group
Earthstones Australia

Seller Information

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