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)
monocliniccommonSilicates
Chamosite
(Fe,Mg)5Al(Si3Al)O10(OH)8
This specimen features a dark green to blackish-green, earthy-looking matrix of Chamosite, which serves as a host for green emerald crystals.
Chamosite Physical Properties
Mohs Hardness
2.5Crystal System
monoclinicLuster
dullStreak Color
greenish-whiteCleavage
perfect on {001}Fracture
unevenSpecific Gravity
3.2Colors
dark green, blackish-green, grayish-green, brownish-greenTransparency
opaqueType Locality
Hupei Mine (Qinjiafang Mine), Pingjiang Co., Yueyang Prefecture, Hunan Province, ChinaMineral Group
SilicatesUses
collectorAssociated Minerals
beryl, emerald, quartz, pyrite, sideriteRarity
commonGeological Context
Chamosite is an iron-rich chlorite mineral typically found in low-grade metamorphic rocks, hydrothermal veins, and sedimentary iron formations, often forming under reducing conditions.
