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Natanite Ilvaite & Rhodochrosite

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UVM592081

Natanite Ilvaite & Rhodochrosite

Rare Mineral

Description Tabs

Description
Locality: 
West Camp, Santa Eulalia, Aquiles Serdán Municipality, Chihuahua, Mexico
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.2 × 3.3 × 1.6 cm
Description

A sharp microcrystal of natanite on matrix with ilvaite and cleaved rhodochrosite.   Natanite is the rare dimorph of jeanbandyite, and these are the only two hydroxide minerals with dominant iron and tin.   The two photomicrographs are differing angles of the same crystal, there is only one on the specimen.

Mineral Data
What's on the rock

Natanite

Formula: 
Fe2+[Sn(OH)6]
Strunz: 
4.FC.10
Hardness: 
5.0
Type Locality: 
Trudovoe Sn deposit, Inyl'chek Range, Issyk-Kul'skaya Oblast, Kyrgyzstan...

Ilvaite

Formula: 
CaFe2+2Fe3+(Si2O7)O(OH)
Strunz: 
9.BE.07
Crystal System: 
Monoclinic
Hardness: 
5.5 - 6.0
Type Locality: 
Torre di Rio - Santa Filomena area (Monte della Torre), Rio Marina, Elba Island, Livorno Province, Tuscany, Italy

Rhodochrosite

Formula: 
MnCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.0
Streak: 
White
Type Locality: 
Cavnic Mine (Kapnikbánya), Cavnic (Kapnic; Kapnik), Maramureș Co., Romania

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