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Hemimorphite

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PJM188214

Hemimorphite

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Description
Locality: 
Eureka County, Nevada, United States of America
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 3.3 × 2.3 cm
Description

A shallow cavity that encompasses the top of this specimen is lined with robin’s egg blue botyroidal crystal cluster of Hemimorphite from the Eureka Mine ( Eureka consolidated), Eureka County, Nevada Hemimorphite is named after Greek word for "half shape" referring to the contrasting terminations at opposite ends of a crystal.

Hemimorphite most commonly forms needle- or fan-shaped aggregates of thin, colourless, bladed crystals; or as blue, blue-green botryoidal crusts. 

Mineral Data
What's on the rock

Hemimorphite

Formula: 
Zn4Si2O7(OH)2·H2O
Strunz: 
9.BD.10
Hardness: 
4.5 - 5.0
Streak: 
White
Type Locality: 
Băiţa Mining District (Baita Bihor; Rézbánya), Nucet, Bihor Co., Romania
Earthstones Australia

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