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Harmotome With Galena

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CYF706750

Harmotome With Galena

Description Tabs

Description
Locality: 
Rosebery Mine, Rosebery District, Tasmania, Australia
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7 × 5 × 4 cm
Description

A great display specimen of clear to white Harmotome on matrix. This piece has come from the small, fairly recent find at Rosebery mine and has some minor glena associated with it.

Mineral Data
What's on the rock

Harmotome

Formula: 
(Ba0.5,Ca0.5,K,Na)5[Al5Si11O32] ·12H2O
Strunz: 
9.GC.10
Crystal System: 
Monoclinic
Hardness: 
4.0 - 5.0
Streak: 
White
Type Locality: 
St Andreasberg, St Andreasberg District, Harz, Lower Saxony, Germany

Galena

Formula: 
PbS
Strunz: 
2.CD.10
Crystal System: 
Isometric
Hardness: 
2.5
Colour: 
Lead-grey
Streak: 
Lead-grey