Enstatite | Gemopedia

Enstatite occurs in a wide variety of colors ranging from reds and oranges, which are the most common, to yellows and greens, white, and colorless. This gem has been identified in meteorites, and is believed to be one of the early stages of crystalline silicate formation in space.
Alternate
Names
Bronzite If It Has Fibrous Inclusions
Colors
Dark Reddish Brown To Brownish Green

Enstatite Classification

Common Name

Enstatite

Species

Enstatite

Variety

Colors

Dark Reddish Brown To Brownish Green

Alternate Names

Bronzite If It Has Fibrous Inclusions

Gemstone Groups

Pyroxene

Key Separations

RI, birefringence, optic character and spectrum

Comments

Hypersthene (Mg,Fe)2Si2O6 biaxial negative SG 3.45 (+/-0.05). Enstatite might show 6 rayed star or cat's-eye.

Enstatite Optical Properties

Transparency

Transparent - Opaque

Refractive Index

1.663-1.673
Tolerance:(+0.010/-0.010)

Birefringence

0.008-0.011

Optic Character

Biaxial

Optic Sign

Positive

Polariscope Reaction

Doubly Refractive (DR)

Fluorescence

SWUV: inert
LWUV: inert

CCF Reaction

Pleochroism

Trichroic, strong pinkish red to brown, green, and yellow

Dispersion

Strength: weak fire Value: 0.01

Comments

Enstatite Chemistry & Crystallography

Chemical Name

magnesium silicate

Chemical Formula

Mg2Si2O6

Synthesis

Crystal System

Orthorhombic

Classification

Silicate

Nature

Natural

Crystallinity

Crystalline

Comments

Enstatite Characteristic Physical Properties

Hardness

5-6

Streak

White

Specific Gravity

3.23-3.4 Typical:3.25

Toughness

Poor

Inclusions

Cat's-eye enstatite will have black needle-like inclusions.

Luster

Vitreous

Stability

Fracture

Uneven

Cleavage

Good, in one direction

Comments

JTV on Google+
0 Items
My Wish List
Close
Item
Description
Qty.
Price


Estimated Order Total:
0
Total Due Today:
0
Close
Item
Description
Qty.
Price


Page of 1