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Gyrolite & Apophyllite

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ATM1128681

Description Tabs

Description
Locality: 
Malad Quarry, Mumbai, Maharashtra, India
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
5.82 × 8.49 × 5.21 cm
Description

Large open vug lined with Olive Green spherical aggregates of Gyrolite perched on the Gyrolites are translucent clear White Apophyllites (Two habits)

Aesthetic specimen from Malad Quarry.

 

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

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