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Londonite

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SER205607

Londonite

Type Locality

Description Tabs

Description
Locality: 
Antsongombato, Antsentsindrano, Anosiarivo Manapa, Betafo, Vakinankaratra, Madagascar
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 3 × 1.8 cm
Largest Crystal: 
1.00cm
Description

A yellow crystal on pegmatite; self collected on 1999

Mineral Data
What's on the rock

Londonite

Formula: 
(Cs,K,Rb)Al4Be4(B,Be)12O28
Strunz: 
6.GC.05
Crystal System: 
Isometric
Hardness: 
8.0
Streak: 
White
Type Locality: 
Antandrokomby pegmatite, Manandona Valley, Sahatany Pegmatite Field (Mt Ibity area), Vakinankaratra Region, Antananarivo Province, Madagascar