Rhodonite

$5.50 inc GST

A manganese inosilicate mineral formed by either hydrathermal, contact metamorhpic or regional metamorphic processes.

This specimen comes from around Kenilworth in Qld. It is most likely that the surrounding matrix is a marine sediment metamorphosed by intrusion of the North Arm volcanics and/or subsequent regional deformation. The specimen is pink in colour and has been cut on one face.

A member of the pyroxenoid group of minerals. It crystallizes in the triclinic system with tabular and rectangular  prismatic cyrstals. It commonly occurs as cleavable to compact masses with a pink to rose-red colour.

Although rich in manganese rhodonite is not used for any commercial purpose except for production of non-precious stone jewelery.

Formula: (Mn, Fe, Mg, Ca)SiO3

Cleavage: prismatic, almost at right angles

Hardnes: 5.5–6.5

Specific gravity: 3.4–3.7

Luster: vitreous, less frequently pearly on cleavage surface

Images are examples of specimens only.  Size and shape may vary.

Specimens are usually no smaller than 75mm in one dimension.

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Description

A manganese inosilicate mineral formed by either hydrathermal, contact metamorhpic or regional metamorphic processes.

This specimen comes from around Kenilworth in Qld. It is most likely that the surrounding matrix is a marine sediment metamorphosed by intrusion of the North Arm volcanics and/or subsequent regional deformation. The specimen is pink in colour and has been cut on one face.

A member of the pyroxenoid group of minerals. It crystallizes in the triclinic system with tabular and rectangular  prismatic cyrstals. It commonly occurs as cleavable to compact masses with a pink to rose-red colour.

Although rich in manganese rhodonite is not used for any commercial purpose except for production of non-precious stone jewelery.

Formula: (Mn, Fe, Mg, Ca)SiO3

Cleavage: prismatic, almost at right angles

Hardnes: 5.5–6.5

Specific gravity: 3.4–3.7

Luster: vitreous, less frequently pearly on cleavage surface

Images are examples of specimens only.  Size and shape may vary.

Specimens are usually no smaller than 75mm in one dimension.

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