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Ferrierite & Heulandite

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UVM632911

Ferrierite & Heulandite

Jim Thomas colletion
Classic Locality

Description Tabs

Description
Locality: 
New Cornelia Mine, Ajo, Pima County, Arizona, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.3 × 1.6 × 1.5 cm
Description

Ferrierite crystallizing as "fans" and "mohawks" across matrix, with colorless heulandite and calcite in association.   From the Jim Thomas collection, a mining engineer at the New Cornelia.   

Mineral Data
What's on the rock

Ferrierite

Synonym Of: 

Ferrierite-K

Formula: 
(K2,Na2,Mg,Ca)3-5Mg[Al5-7Si27.5-31O72]·18H2O
Strunz: 
9.GD.50
Hardness: 
3.0 - 3.5

Ferrierite-Mg

Formula: 
(Mg,Na2,K2,Ca)3-5Mg[Al5-7Si27.5-31O72]·18H2O
Strunz: 
9.GD.50
Hardness: 
3.0 - 3.5

Ferrierite-Na

Formula: 
(Na2,K2,Mg,Ca)3-5Mg[Al5-7Si27.5-31O72]·18H2O
Strunz: 
9.GD.50
Hardness: 
3.0 - 3.5
Group Parent: 
Zeolite Group

Heulandite

Synonym Of: 

Heulandite-Ba

Formula: 
(Ba,Ca,K,Na,Sr)5Al9Si27O72·22H2O
Strunz: 
9.GE.05
Hardness: 
3.5

Heulandite-Ca

Formula: 
(Ca,Na)2-3Al3(Al,Si)2Si13O36·12H2O
Strunz: 
9.GE.05
Hardness: 
3.5 - 4.0

Heulandite-K

Formula: 
(K,Na,Ca)2-3Al3(Al,Si)2Si13O36·12H2O
Strunz: 
9.GE.05
Hardness: 
3.0 - 3.5

Heulandite-Na

Formula: 
(Na,Ca)2-3Al3(Al,Si)2Si13O36·12H2O
Strunz: 
9.GE.05
Hardness: 
3.0 - 3.5

Heulandite-Sr

Formula: 
(Sr,Na,Ca)2-3Al3(Al,Si)2Si13O36·12H2O
Strunz: 
9.GE.05
Hardness: 
3.0 - 3.5
Hardness: 
3 - 3.5
Colour: 
White
Streak: 
White

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