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Rhodizite & Rubellite

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PDM657683

Rhodizite & Rubellite

Description Tabs

Description
Locality: 
Andrembesoa, Betafo, Vakinankaratra, Madagascar
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.8 × 3.3 × 2.8 cm
Largest Crystal: 
1.00cm
Description

This sample features a cream yellow rhodizite crystal, quite aerial, 10 mm in size, on a matrix of white feldspar and dark pink rubellite. It shows multiple faces where de rhombic dodecahedron is the main form.

From a find in 2010, it is the specimen #576 of PhD Geologist Bob Janssens.

Mineral Data
What's on the rock

Rhodizite

Formula: 
(K,Cs)Al4Be4(B,Be)12O28
Strunz: 
6.GC.05
Crystal System: 
Isometric
Hardness: 
8.0
Type Locality: 
Ministerskaya Yama Pit, Sarapulka District (Murzinka), Sverdlovskaya Oblast', Middle Urals, Urals Region, Russia...

Rubellite

Variety Of: 

Tourmaline

Formula: 
A(D3)G6(T6O18)(BO3)3X3Z
Hardness: 
7
Hardness: 
0.0

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