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Smoky Quartz Microcline Aegirine & Pyrochlore Group

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BSM696896

Smoky Quartz Microcline Aegirine & Pyrochlore Group

Classic Locality

Description Tabs

Description
Locality: 
Mount Malosa, Zomba, Southern Region, Malawi
Class: 
Combination
Size Range: 
Cabinet (10-18 cm)
Size: 
5 × 12.3 × 6.8 cm
Description

A slightly arch shaped specimen with a variety of minerals giving a somewhat busy appearance. The main matrix is white microcline felddspar giving way to an upper display surface of well formed crystals of microcline, smoky quartz and aegirine. The surface is densely scattered with translucent pale yellow to light beige coloured and very small crystals belonging to the pyrochlore group.

Previous labels supplied (not photographed)
Mineral Data
What's on the rock

Smoky Quartz

Variety Of: 

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Hardness: 
7.0
Formula: 
SiO2
Hardness: 
0.0

Microcline

Formula: 
KAlSi3O8
Strunz: 
9.FA.30
Crystal System: 
Triclinic - Pinacoidal
Hardness: 
6.0 - 6.5
Streak: 
White
Type Locality: 
Arendal, Aust-Agder, Norway

Aegirine

Formula: 
NaFe3+Si2O6
Group Parent: 
Clinopyroxene Subgroup
Strunz: 
9.DA.25
Crystal System: 
Monoclinic
Hardness: 
6.0
Type Locality: 
Rundemyr, Øvre Eiker, Buskerud, Norway

Pyrochlore Group

Formula: 
A2Nb2(O,OH)6Z
Strunz: 
4
Crystal System: 
Isometric
Hardness: 
5 - 5.5
Colour: 
Brown, yellow-brown, reddish brown, orange, black
Streak: 
Light brown, yellow-brown

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