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)
cubicuncommonSilicates
Andradite
Ca3Fe2(SiO4)3
This specimen features dark, well-formed crystals of andradite, likely reddish-brown to black, intergrown with green epidote and clear to milky quartz.
Andradite Physical Properties
Mohs Hardness
6.5Crystal System
cubicLuster
vitreousStreak Color
whiteCleavage
noneFracture
conchoidalSpecific Gravity
3.85Colors
black, reddish-brown, yellow-green, yellowTransparency
transparentType Locality
Garnet Hill, Calaveras County, CaliforniaMineral Group
SilicatesUses
jewelry, collectorAssociated Minerals
epidote, quartzRarity
uncommonGeological Context
Andradite is a common garnet mineral typically found in contact metamorphic rocks (skarns) formed from the alteration of limestones or calc-silicate rocks, often near granitic intrusions.
