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Hydroxyapophyllite-(K) & Natrolite

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SYM569884

Hydroxyapophyllite-(K) & Natrolite

Rare Mineral

Description Tabs

Description
Locality: 
Horseshoe Dam - South of, Maricopa County, Arizona, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 2.5 × 2 cm
Description

Clear euhedral crystals of hydorxyapophylite-k with clear terminated natrolite crystals. 

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

Natrolite

Formula: 
Na2Al2Si3O10·2H2O
Strunz: 
9.GA.05
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Hohentwiel, Singen, Hegau, Baden-Württemberg, Germany