Bronzite | Gemopedia

Bronzite is an iron-bearing variety of enstatite distinguished by its green-brown color and bronze-like sub-metallic luster with fibrous inclusions. Enstatite is a silicate and a member of the pyroxene group. Appreciated for its sheen, bronzite is sometimes polished to make small ornamental objects.
Colors
Golden Brown, Brown To Black, Green, Colorless, Gray, Yellow

Bronzite Classification

Common Name

Bronzite

Species

Enstatite

Variety

Bronzite

Colors

Golden Brown, Brown To Black, Green, Colorless, Gray, Yellow

Alternate Names

Gemstone Groups

Pyroxene

Key Separations

RI, birefringence, optic character and spectrum

Comments

Bronzite Optical Properties

Transparency

Transparent - Opaque

Refractive Index

1.665-1.703
Tolerance:(+0.010/-0.010)

Birefringence

0.008-0.015

Optic Character

Biaxial

Optic Sign

Positive

Polariscope Reaction

Doubly Refractive (DR)

Fluorescence

SWUV: inert
LWUV: inert

CCF Reaction

Pleochroism

Trichroic, strong green, yellow, and reddish brown

Dispersion

Comments

Bronzite Chemistry & Crystallography

Chemical Name

magnesium iron silicate

Chemical Formula

(Mg,Fe)2Si2O6

Synthesis

Crystal System

Orthorhombic

Classification

Silicate

Nature

Natural

Crystallinity

Crystalline

Comments

Bronzite Characteristic Physical Properties

Hardness

5-6

Streak

White Or Brownish

Specific Gravity

3.3-3.43 Typical:3.35

Toughness

Poor

Inclusions

Bronzite has fibrous inclusions and might show schiller effect.

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