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Bustamite

Image: <bdi><a href="https://www.wikidata.org/wiki/Q59254420" class="extiw" title="d:Q59254420"><span title="Dutch photographer">Leon Hupperichs</span></a></bdi> (CC BY-SA 3.0)

triclinicuncommonSilicates

Bustamite

CaMnSi₂O₆

The image displays a reddish-pink, crystalline mass of Bustamite, showing a somewhat bladed or fibrous texture within a matrix.

Bustamite Physical Properties

Mohs Hardness

6

Crystal System

triclinic

Luster

vitreous

Streak Color

white

Cleavage

good on {100} and {110}

Fracture

uneven

Specific Gravity

3.35

Colors

pink, reddish-brown, grey

Transparency

translucent

Type Locality

Meldon Quarry, Okehampton area, Devon, England, UK

Mineral Group

Silicates

Uses

collector, ornamental

Associated Minerals

rhodonite, johannsenite, quartz, calcite

Rarity

uncommon

Geological Context

Bustamite is a pyroxenoid mineral that forms in metamorphosed manganese-rich deposits, often found in skarns or contact metamorphic environments.