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Palygorskite With Calcite

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PDM786129

Palygorskite With Calcite

Description Tabs

Description
Locality: 
Metaline Falls, Pend Oreille County, Washington, United States of America
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.8 × 3.2 × 2.6 cm
Description

Grey fibrous masses of palygorskite interbedded with an aggregate of lustrous euhedral crystals of calcite. Representative specimen this locality in Washington.

Ex. Francois Verhallen collection.

Mineral Data
What's on the rock

Palygorskite

Formula: 
(Mg,Al)5(Si,Al)8O20(OH)2·8H2O
Strunz: 
9.EE.20
Hardness: 
2.0 - 2.5
Type Locality: 
Second Mine, Popovka River, Palygorskaya Distance of Perm Railways, Permskaya Oblast', Middle Urals, Urals Region, Russia...

Calcite

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

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