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Hydroxyapophyllite-(K) & Gyrolite

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MEX517879

Hydroxyapophyllite-(K) & Gyrolite

Classic Locality

Description Tabs

Description
Locality: 
Dunvegan Quarry, Isle of Skye, Scotland, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 2 × 1.6 cm
Description

Two well terminated apophyllite crystals on gyrolite.

Mineral Data
What's on the rock

Hydroxyapophyllite-(K)

Formula: 
KCa4(Si8O20)(OH,F)·8H2O
Strunz: 
9.EA.15
Hardness: 
4.0 - 5.0
Type Locality: 
Ore Knob Mine, Ore Knob, Ashe Co., North Carolina, USA

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