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Aluminite

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LGM957430

Aluminite

Ex Dr. O. Schmidt, Bergisch-Gladbach, Germany
With Antique Label

Description Tabs

Description
Locality: 
Halle, Saxony - Anhalt, Germany
Class: 
Massive/Crystalline
Size Range: 
Thumbnail (1-3cm)
Size: 
2.8 × 2.1 × 1.7 cm
Weight: 
8.90gr
Description

Two attractive and complete nodules of white, dull aluminite, a hydrated aluminum sulfate hydroxide (pics 3,4,5 & 6,7). The material is stable, with a chalky feeling when touched.

Comes with old Droop label, a second notice label from Dr. Schmidt and on-glued corresponding number sticker. Carl Adolph Droop was born August 28, 1841 in Raumthal, Langenfelde, Germany. Carl Droop was the proprietor of a mineral dealership in Dresden-Plauen, Germany, which he founded in 1889. The business went first by the name of  'Sächsische Mineralien-Handlung Droop' as late as 1903, and later (perhaps after the death of the founder?) as 'Mineralienhaus Droop'.

The size of the second specimen is 2.4 x 1.8 x 1.2 cm.

Mineral Data
What's on the rock

Aluminite

Formula: 
Al2(SO4)(OH)4·7H2O
Strunz: 
7.DC.05
Crystal System: 
Monoclinic
Hardness: 
1.0 - 2.0
Streak: 
White
Type Locality: 
Halle, Saxony-Anhalt, Germany

Seller Information

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