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Vránaite

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Vránaite

Type Locality

Description Tabs

Description
Locality: 
Manjaka, Sahatany Valley, Ibity, Antsirabe II, Vakinankaratra, Madagascar
Class: 
Massive/Crystalline
Size Range: 
Thumbnail (1-3cm)
Size: 
1.6 × 1.3 × 0.4 cm
Description

section of pegmatite where are visible tiny white vein into the colorless crystals of spodumene, these vein is formed by the extremely rare vranaite; the vranaite is the product of breakdown of spodumene on hydrothermal phase; this specimen is part of the specimen that have provided the holotype and come directly from one of the authors.

For value the dimension of the crystals I remenber you that the photos of my specimens are taken at only 20/40 enlargement!

 

Mineral Data
What's on the rock

Vránaite

Formula: 
Al16B4Si4O38
Crystal System: 
Monoclinic
Hardness: 
Colour: 
Colourless
Streak: 
White
Type Locality: 
Manjaka, Sahatany Valley, Ibity, Antsirabe II, Vakinankaratra, Madagascar

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