Tiger Iron | Gemopedia

Tiger iron is a rock that is made up of tiger's eye quartz, black hematite and red jasper. These minerals create contrasting bands of color for a truly unique look popularly used for many sorts of ornamentation and decoration.
Alternate
Names
Tigeriron
Colors
Golden To Red Brown

Tiger Iron Classification

Common Name

Tiger Iron

Species

NA

Variety

Tiger Iron

Colors

Golden To Red Brown

Alternate Names

Tigeriron

Gemstone Groups

Key Separations

Color, appearance, structure

Comments

Stones have bands of black hematite, tiger's-eye and red jasper. Depending on where the rock is tested it can show a quartz RI 1.544 to 1.553 or a OTL RI of hematite.

Tiger Iron Optical Properties

Transparency

Opaque

Refractive Index

Over the Limit 1.544-3.22

Birefringence

Optic Character

Optic Sign

Polariscope Reaction

Fluorescence

SWUV: Inert
LWUV: Inert

CCF Reaction

Pleochroism

None

Dispersion

Comments

Tiger Iron Chemistry & Crystallography

Chemical Name

silicon dioxide (aka silica) and iron oxide

Chemical Formula

SiO2 and Fe2O3

Synthesis

Crystal System

NA

Classification

Rock

Nature

Natural

Crystallinity

Aggregate

Comments

Tiger Iron Characteristic Physical Properties

Hardness

7

Streak

Specific Gravity

2.64-2.71 Typical:2.66

Toughness

Good

Inclusions

Tiger iron has contrasting color bands alternating between tiger's-eye, jasper and hematite.

Luster

Vitreous

Stability

Good

Fracture

Cleavage

None

Comments

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