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Fernandinite & Pintadoite

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MNR558746

Fernandinite & Pintadoite

Rare Mineral

Description Tabs

Description
Locality: 
Slick Rock, San Miguel County, Colorado, United States of America
Class: 
Massive/Crystalline
Size Range: 
Thumbnail (1-3cm)
Size: 
1.6 × 1.2 × 1.2 cm
Description

Dark green Fernandinite with yellow-green Pintadoite. Good reference piece.

Ex. Rudolf Ďuďa collection

Mineral Data
What's on the rock

Fernandinite

Formula: 
(Ca,K)(V5+,V4+,Fe2+)8O20·10H2O
Strunz: 
4.HE.20
Hardness: 
2.0 - 3.0
Type Locality: 
Ragra Mine (Minasragra), Huayllay District, Pasco Province, Pasco Department, Peru