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Weeksite & Vanadinite

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UVM613281

Weeksite & Vanadinite

A.L. Flagg
Radioactive

Description Tabs

Description
Locality: 
Red Knob Mine, Muggins Mts., Yuma County, Arizona, United States of America
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.5 × 4.2 × 2.4 cm
Description

An unusual association--  Orange crystals of vanadinite growing directly on a spray of yellow weeksite.   This was old material in the collection of A.L. Flagg (1892-1961), originally labelled uranophane.    Studied via Raman Spectroscopy, it proved to be vanadinite on weeksite.   

Mineral Data
What's on the rock

Weeksite

Formula: 
K2(UO2)2(Si5O13)·4H2O
Strunz: 
9.AK.30
Hardness: 
1.0 - 2.0
Colour: 
Yellow
Type Locality: 
Autunite No. 8 claim, Topaz Mountain, Thomas Range, Juab Co., Utah, USA

Vanadinite

Formula: 
Pb5(VO4)3Cl
Strunz: 
8.BN.05
Crystal System: 
Hexagonal
Hardness: 
2.5 - 3.0
Type Locality: 
Zimapán, Mun. de Zimapán, Hidalgo, Mexico

Seller Information

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