Image: <bdi><a href="https://www.wikidata.org/wiki/Q126871368" class="extiw" title="d:Q126871368"><span title="photographer from the United States">Darla Sondrol</span></a></bdi> (CC0)
cubiccommonSilicates
Andradite
Ca3Fe2Si3O12
This image displays dark, well-formed Andradite crystals, approximately 1 cm across, exhibiting the characteristic dodecahedral (12-sided) habit typical of garnets.
Andradite Physical Properties
Mohs Hardness
6.5Crystal System
cubicLuster
vitreousStreak Color
whiteCleavage
noneFracture
conchoidalSpecific Gravity
3.85Colors
black, dark green, yellow, brownish-redTransparency
translucentType Locality
ItalyMineral Group
SilicatesUses
gemstone, collectorAssociated Minerals
epidote, diopside, calcite, magnetiteRarity
commonGeological Context
Andradite typically forms in contact metamorphic rocks, particularly skarns, where calcium-rich sediments react with iron-rich fluids, and also in some serpentinites and igneous rocks.
