Triplite | Gemopedia

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.
Colors
Dark Red, Brown, Orange, Black

Triplite Classification

Common Name

Triplite

Species

Triplite

Variety

Colors

Dark Red, Brown, Orange, Black

Alternate Names

Gemstone Groups

Key Separations

RI and optic character

Comments

Triplite Optical Properties

Transparency

Translucent - Opaque

Refractive Index

1.643-1.713

Birefringence

0.02

Optic Character

Biaxial

Optic Sign

Positive

Polariscope Reaction

Doubly Refractive (DR)

Fluorescence

SWUV: Inert
LWUV: Inert

CCF Reaction

Pleochroism

Dichroic, moderate yellow brown and reddish brown

Dispersion

Strength: strong fire

Comments

Triplite Chemistry & Crystallography

Chemical Name

manganese iron magnesium calcium phosphate flouride hydroxide

Chemical Formula

(Mn2+, Fe2+, Mg,Ca)2(PO4)(F,OH)

Synthesis

Crystal System

Monoclinic

Classification

Phosphate

Nature

Natural

Crystallinity

Crystalline to Aggregate

Comments

Triplite Characteristic Physical Properties

Hardness

5-5.5

Streak

Brown To White

Specific Gravity

3.55-3.9

Toughness

Poor

Inclusions

Luster

Vitreous

Stability

Fracture

Uneven, Subconchoidal

Cleavage

Good, in two directions, Poor, in one direction

Comments

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