Triplite
Triplite
Published: June 2014
Modified: November 2021
Triplite is named for its three cleavage planes that are oriented at right angles to each other. The structure of this stone, combined with its brittle nature, makes faceting very difficult. Successfully faceted triplite gems are coveted by collectors.
General Information
Common Name
Triplite
Species
Triplite
Transparency
Translucent - Opaque
Dispersion
Strength: Strong Fire
Refractive Index
1.643-1.703
Birefringence
0.030
Optic Character
Biaxial
Optic Sign
Positive
Polariscope Reaction
Aggregate (AGG), Doubly Refractive (DR)
Fluorescence
SWUV: Inert
LWUV: Inert
LWUV: Inert
Pleochroism
Dichroic, moderate yellow brown and reddish brown
Hardness
5-5.5
Streak
Brown To White
Specific Gravity
3.550-3.900
Toughness
Poor
Luster
Vitreous, Resinous
Fracture
Uneven, Subconchoidal
Cleavage
Good, in two directions, Poor, in one direction
Chemical Name
manganese iron magnesium calcium phosphate flouride hydroxide
Chemical Formula
(Mn2+, Fe2+, Mg,Ca)2(PO4)(F,OH)
Crystal System
Monoclinic
Chemistry Classification
Phosphate
Triplite Colors
-
Black -
Brown -
Orange
Countries of Origin
Pakistan; Unknown; Uzbekistan
Care
Triplite is soluble in acid. The stone is brittle so please handle with care.