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Adranosite-(Al) & Pyracmonite

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GMN513296

Adranosite-(Al) & Pyracmonite

Description Tabs

Description
Locality: 
Pécs-Vasas, Pécs, Mecsek Mountains, Baranya County, Hungary
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
1.9 × 1.6 × 1.3 cm
Description

White, pale yellow excellent sprays of columnar crystals.The adranosite "balls" sitting on a pyracmonite carpet. (The pyracmonite forms smaller glassy, translucent crystals.)
Most of the crystals are a mixture of adranosite Al and Fe, but the rate of Fe hasn't reached the 50% in any of the analyses. 
In this quality I found only a few specimens.

Mineral Data
What's on the rock

Adranosite-(Al)

Formula: 
(NH4)4NaAl2(SO4)4Cl(OH)2
Hardness: 
0.0
Type Locality: 
La Fossa crater, Vulcano Island, Lipari, Eolie Islands (Aeolian Islands), Messina Province, Sicily, Italy

Pyracmonite

Formula: 
(NH4)3Fe(SO4)3
Strunz: 
7.AC.08
Hardness: 
0.0
Type Locality: 
La Fossa crater, Vulcano Island, Lipari, Eolie Islands (Aeolian Islands), Messina Province, Sicily, Italy

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