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Erionite

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PJM160985

Erionite

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Description
Locality: 
Phelps Dodge Corporation Well #1, Little Ajo Mountains, Pima County, Arizona, United States of America
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.2 × 2.8 × 2.1 cm
Description

Hundreds of erionite crystals in domed groups, lining cavities in a reddish matrix. Erionite is a zealot and has recently been divided into 3 different species based of whether Ca, K or Na is dominant in its formula. At this deposit the dominant element has not been determine for erionite as yet to the best of my knowledge

Mineral Data
What's on the rock

Erionite

Synonym Of: 

Erionite-Ca

Formula: 
(Ca,K2,Na2)2[Al4Si14O36]·15H2O
Strunz: 
9.GD.20
Hardness: 
3.5 - 4.0

Erionite-K

Formula: 
(K2,Ca,Na2)2[Al4Si14O36]·15H2O
Strunz: 
9.GD.20
Hardness: 
3.5 - 4.0

Erionite-Na

Formula: 
(Na2,K2,Ca)2[Al4Si14O36]·15H2O
Strunz: 
9.GD.20
Hardness: 
3.5 - 4.0
Earthstones Australia

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