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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 (Humite Group)

Chondrodite

(Mg,Fe)₅(SiO₄)₂(F,OH,O)₂

This specimen features several translucent, orange-brown chondrodite crystals with a vitreous luster, embedded in a matrix and associated with a dark, likely black, spinel crystal.

Chondrodite Physical Properties

Mohs Hardness

6

Crystal System

monoclinic

Luster

vitreous

Streak Color

white

Cleavage

poor on {001}

Fracture

conchoidal

Specific Gravity

3.1

Colors

yellow, orange, red, brown, green, colorless

Transparency

transparent

Type Locality

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

Mineral Group

Silicates (Humite Group)

Uses

collector, gemstone (rarely)

Associated Minerals

spinel, phlogopite, calcite, magnetite, diopside

Rarity

uncommon

Geological Context

Chondrodite typically forms in metamorphosed impure limestones and dolomites, often in contact metamorphic aureoles or skarns, under high-temperature, low-pressure conditions.