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Hydrohetaerolite With Calcite & Hemimorphite

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RSL562330

Hydrohetaerolite With Calcite & Hemimorphite

Rare Mineral

Description Tabs

Description
Locality: 
Precaución Mine, Cabezo de San Ginés, El Estrecho de San Ginés, Cartagena, Murcia, Spain
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 5.5 × 4.5 cm
Description

In the matrix of goethite we observe several cavities covered by small brilliant crystals, gray metallic luster; once analyzed results indicated to be hydrohetaerolite. We discuss whether it is hetaerolita, but analysis carried out by Dr. Joan Viñals (Univ. de Barcelona) indicated the hydrated form. Under the SEM-EDS, tetragonal dipyramids are observed. It is accompanied by calcite crystals and hemimorphite (tabular crystals in book shape). SEM-EDS analysis will be sent to buyer.

Mineral Data
What's on the rock

Hydrohetaerolite

Formula: 
ZnMn2O4·H2O
Strunz: 
4.BB.10
Hardness: 
5.0 - 6.0
Type Locality: 
Wolftone Mine, Carbonate Hill, Leadville, Leadville District, Lake Co., Colorado, USA

Calcite

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

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