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)
trigonaluncommonHydroxides
Brucite
Mg(OH)₂
This specimen features a cluster of white to very pale green, platy, pseudohexagonal brucite crystals, exhibiting a distinct pearly luster.
Brucite Physical Properties
Mohs Hardness
2.5Crystal System
trigonalLuster
pearlyStreak Color
whiteCleavage
perfect basal {0001}Fracture
unevenSpecific Gravity
2.39Colors
white, pale greenTransparency
transparentType Locality
Wood's Chrome Mine, Little Britain Township, Lancaster County, Pennsylvania, USAMineral Group
HydroxidesUses
source of magnesium, refractory material, flame retardant, collectorAssociated Minerals
serpentine, chromite, magnesiteRarity
uncommonGeological Context
Brucite commonly forms in low-temperature hydrothermal veins within serpentinized ultramafic rocks or as a product of metamorphism in dolomitic limestones.
