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Chondrodite

Image: <bdi><a href="https://www.wikidata.org/wiki/Q56247090" class="extiw" title="d:Q56247090"><span title="mineral collector and dealer">Robert M. Lavinsky</span></a></bdi> (CC BY-SA 3.0)

monoclinicuncommonSilicates

Chondrodite

(Mg,Fe²⁺)₅(SiO₄)₂(F,OH,O)₂

This specimen features several well-formed, translucent, brownish-orange chondrodite crystals, some displaying distinct crystal faces, embedded within a matrix.

Chondrodite Physical Properties

Mohs Hardness

6

Crystal System

monoclinic

Luster

vitreous

Streak Color

white

Cleavage

poor on {001}

Fracture

conchoidal

Specific Gravity

3.2

Colors

orange, yellow, reddish-brown

Transparency

translucent

Type Locality

Ladjuar Medam (Lajur Madan; Lapis-lazuli Mine), Sar-e-Sang District, Koksha Valley, Badakhshan Province, Afghanistan

Mineral Group

Silicates

Uses

collector, gemstone (rarely)

Associated Minerals

spinel, calcite, phlogopite, magnetite

Rarity

uncommon

Geological Context

Chondrodite is a nesosilicate mineral that typically forms in metamorphosed dolomitic limestones and marbles, often in contact metamorphic environments, resulting from the reaction of dolomite with silica-rich fluids.