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Wairakite With Calcite & Analcime

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LGM146582

Wairakite With Calcite & Analcime

Ex Hori Mineralogy, Ex Dr. Krantz, Bonn, Germany

Description Tabs

Description
Locality: 
Fukushima Prefecture, Honshu Island, Japan
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 3.5 × 2.5 cm
Description

Wairakite is a rare zeolite group species discovered in 1955. The specimen hosts some white crystals between analcime, mostly overgrown by light yellow calcite.
Weight: 36 grams

Mineral Data
What's on the rock

Wairakite

Formula: 
Ca(Al2Si4O12)·2H2O
Strunz: 
9.GB.05
Hardness: 
5.5 - 6.0
Streak: 
White
Type Locality: 
Lake Taupo, Wairakei geothermal area, Wairakei, Taupo, Waikato, North Island, New Zealand

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

Analcime

Formula: 
Na2(Al2Si4O12)·2H2O
Strunz: 
9.GB.05
Crystal System: 
Triclinic
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Cyclopean Islands, Acitrezza (Aci Trezza), Etna Volcanic Complex, Catania Province, Sicily, Italy

Seller Information

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