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Ronneburgite & Hummerite

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SKY942572

Ronneburgite & Hummerite

Type Locality

Description Tabs

Description
Locality: 
Ronneburg Uranium Deposit, Gera, Thuringia, Germany
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.3 × 2.2 × 1.5 cm
Description

This specimen has a good coverage of tiny red crystals of the very rare potassium-manganese-vanadate ronneburgite associated to yellow hummerite on matrix.

Ronneburgite is only found at one locality worldwide, it's Type Locality.

Ex. Erich Laskowski collection.

Mineral Data
What's on the rock

Ronneburgite

Formula: 
K2MnV4O12
Strunz: 
8.AC.75
Hardness: 
3.0
Type Locality: 
Lichtenberg Absetzer Mine (dump), Ronneburg U deposit, Gera, Thuringia, Germany

Hummerite

Formula: 
K2Mg2(V10O28)·16H2O
Strunz: 
4.HC.10
Hardness: 
0.0
Type Locality: 
Hummer Mine, Jo Dandy Mine (Paradox D; Hummer; C; Blackburn; Yellow Bird No. 1; Oversight; Broker), Paradox Valley, Uravan District, Montrose Co., Colorado, USA

Seller Information

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