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Vanadinite On Siderite

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CLB584618

Vanadinite On Siderite

ex collection Oswalt Kopp

Description Tabs

Description
Locality: 
Mibladen, Midelt Province, Drâa-Tafilalet Region, Morocco
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
14.2 × 8 × 4 cm
Weight: 
533.00gr
Description

A very unusual vanadinite specimen. Glossy orange-red crystals on what looks like grayish brown siderite to me. Another explanation for the platy crystals would be a pseudomorph (limonite?) after baryte.

A few damaged crystals.

Mineral Data
What's on the rock

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

Siderite

Formula: 
FeCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.5
Streak: 
White

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