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Romanèchite On Quartz

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PJM87045

Romanèchite On Quartz

Ex J & S Mommers Collection.

Description Tabs

Description
Locality: 
Iron Baron Mine, Middleback Range, Eyre Peninsula, South Australia, Australia
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.7 × 2.5 × 2.1 cm
Description

Lusterous black spheres of acicular romanechite crystals on a matrix which is a mixture of dolomite and hematite in cavities lined with small gemmy quartz crystals. From the Iron Baron Opencut, which is southwest of Iron Knob.

Mineral Data
What's on the rock

Romanèchite

Formula: 
(Ba,H2O)2Mn5O10
Strunz: 
4.DK.10
Hardness: 
5.0 - 6.0
Type Locality: 
Manganese deposit, Romanèche-Thorens, La Chapelle-de-Guinchay, Saône-et-Loire, Burgundy, France

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White
Earthstones Australia

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