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Autunite

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SYA731968

Autunite

ex Ernst J. Fröbe (1851 - 1921) collection
Radioactive

Description Tabs

Description
Locality: 
Schwarzenberg, Erzgebirge, Saxony, Germany
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.5 × 4 × 1.5 cm
Description

Plenty of green-yellow autunite crystals on matrix.

From the historic collection of the mining director Ernst Julius Fröbe ( 1851 - 1921) from Schwarzenberg, Saxony.

Comes with a - copy - of the original Fröbe label.

 

The material was collected by E. Fröbe and K. Schiffner 1905 - 1910

Karl Schiffner published this finds in 1911

 

Please take note of the article about the discovery of the Fröbe collection in LAPIS 11 / 2016.

Mineral Data
What's on the rock

Autunite

Formula: 
Ca(UO2)2(PO4)2·11H2O
Strunz: 
8.EB.05
Crystal System: 
Tetragonal
Hardness: 
2.0 - 2.5
Type Locality: 
Saint-Symphorien-de-Marmagne, Montcenis, Saône-et-Loire, Burgundy, France

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