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
Grossular
Ca₃Al₂(SiO₄)₃
This image displays a cluster of well-formed, reddish-orange grossular garnet crystals, exhibiting a translucent quality and a vitreous luster. The crystals show distinct dodecahedral or trapezohedral forms.
Grossular Physical Properties
Mohs Hardness
7Crystal System
cubicLuster
vitreousStreak Color
whiteCleavage
noneFracture
conchoidalSpecific Gravity
3.65Colors
reddish-orange, yellow, green, brown, pink, colorlessTransparency
translucentType Locality
Jeffrey mine (Jeffrey quarry; Johns-Manville mine), Asbestos, Les Sources RCM, Estrie, Québec, CanadaMineral Group
SilicatesUses
jewelry, collectorAssociated Minerals
diopside, vesuvianite, wollastonite, calciteRarity
uncommonGeological Context
Grossular garnet typically forms in contact metamorphic rocks, particularly in calc-silicate skarns, altered limestones, and serpentinites. It can also be found in some regional metamorphic settings.
