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Herderite With Albite Mica Elbaite & Topaz

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KRM42149

Herderite With Albite Mica Elbaite & Topaz

Description Tabs

Description
Locality: 
Byansahpi, Braldu Valley, Skardu District, Gilgit-Baltistan, Pakistan
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.3 × 3.6 × 1.9 cm
Largest Crystal: 
1.40cm
Description

An aesthetic specimen of beautiful well terminated green color rare herderite in combination with snow-white albite , elbaite , topaz and mica.

There is no damage except small etching at base of the crystal.

A good combination herderite specimen

Mineral Data
What's on the rock

Herderite

Formula: 
CaBePO4(F,OH)
Strunz: 
8.BA.10
Crystal System: 
Monoclinic
Hardness: 
5.0 - 5.5
Type Locality: 
Sauberg Mine, Ehrenfriedersdorf, Erzgebirge, Saxony, Germany

Albite

Formula: 
NaAlSi3O8
Strunz: 
9.FA.35
Crystal System: 
Triclinic
Hardness: 
6.0 - 6.5
Streak: 
White
Type Locality: 
Finnbo (Finbo), Falun, Dalarna, Sweden

Mica

Group Parent: 
Mica Group

Elbaite

Formula: 
Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Strunz: 
9.CK.05
Hardness: 
7.5
Streak: 
White
Type Locality: 
Fonte del Prete, San Piero in Campo, Campo nell'Elba, Elba Island, Livorno Province, Tuscany, Italy...

Topaz

Formula: 
Al2(SiO4)(F,OH)2
Strunz: 
9.AF.35
Crystal System: 
Orthorhombic - Dipyramidal
Hardness: 
8.0
Streak: 
White