Image: <a rel="nofollow" class="external text" href="http://www.mindat.org/user-13767.html#0">John Krygier</a> (Public domain)
monocliniccommonSilicates
Tremolite
Ca2Mg5Si8O22(OH)2
This specimen displays white to light gray tremolite crystals with a glimmery, criss-crossing fibrous to prismatic habit, characteristic of its amphibole structure.
Tremolite Physical Properties
Mohs Hardness
5Crystal System
monoclinicLuster
vitreousStreak Color
whiteCleavage
Perfect on {110} at 56° and 124°Fracture
unevenSpecific Gravity
2.9Colors
white, gray, light green, colorlessTransparency
translucentType Locality
Balmat, Balmat-Edwards Zinc District, St. Lawrence County, New York, USAMineral Group
SilicatesUses
collector, industrialAssociated Minerals
calcite, dolomite, talc, diopside, quartz, garnetRarity
commonGeological Context
Tremolite is a common metamorphic mineral, typically forming in impure dolomitic limestones and other magnesium-rich sedimentary rocks during regional or contact metamorphism. It can also occur in some ultramafic igneous rocks.
