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Gyrolite Apophyllite & Quartz

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PJM145800

Gyrolite Apophyllite & Quartz

Ex Ruth Coulsell and Joan Lamond Collections

Description Tabs

Description
Locality: 
Bombay Quarry, Mumbai District, Maharashtra, India
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.1 × 3.9 × 2.6 cm
Description

An early 1970's specimen from the famous Bombay Quarry, two large white balls of gyrolite with blocky apophyllite crystals and some quartz druze. These were first brought to Australia by Minex, a Melbourne based mineral and gem dealership, this specimen was purchased by Ruth Coulsell from Minex

Mineral Data
What's on the rock

Gyrolite

Formula: 
NaCa16Si23AlO60(OH)8·14H2O
Strunz: 
9.EE.30
Hardness: 
2.5
Streak: 
White
Type Locality: 
The Storr, Portree, Trotternish, Isle of Skye, North West Highlands (Inverness-shire), Scotland, UK

Apophyllite

Synonym Of: 

Fluorapophyllite-(K)

Formula: 
KCa4(Si8O20)(F,OH)·8H2O
Strunz: 
9.EA.15
Hardness: 
4.5 - 5.0

Fluorapophyllite-(Na)

Formula: 
NaCa4(Si8O20)F·8H2O
Strunz: 
9.EA.15
Hardness: 
4.0 - 5.0

Hydroxyapophyllite-(K)

Formula: 
KCa4(Si8O20)(OH,F)·8H2O
Strunz: 
9.EA.15
Hardness: 
4.0 - 5.0

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White
Earthstones Australia

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