Images
Formula: Ca4[Si3O9(OH)](OH)
Sorosilicate (Si2O7 groups), paramorph of
foshagite
Crystal System: Orthorhombic
Specific gravity: 2.9 measured, 3.08 calculated
Streak: White
Colour: Colourless
Common impurities: Al,Mn,Mg,Na
Environments
Trabzonite is a product of retrograde alteration, in skarn produced
by intrusion
of granite into sediments
(HOM, Dana).
Localities
At the type locality, Güneyce-Ikizdere, Rize Province, Turkey, trabzonite occurs as a retrograde mineral in a
skarn containing spurrite,
rustumite, calcite,
vesuvianite, hillebrandite,
defernite, tobermorite,
killalaite, garnet,
perovskite and molybdenite
(AM 73.1497).
Back to Minerals