Anglesite | Gemopedia

Anglesite gets its name from a deposit locality: Anglesey, an island in Wales. Anglesite forms several types of crystal habits: tabular, prismatic, pseudorhombohedral, or pyramidal. They resemble those of barite and celestite. Prized by collectors for its strong dispersion, anglesite is often colorless to white, grayish, yellow, green or blue.
Colors
Colorless, Yellow, White, Green, Blue

Anglesite Classification

Common Name

Anglesite

Species

Anglesite

Variety

Colors

Colorless, Yellow, White, Green, Blue

Alternate Names

Gemstone Groups

Key Separations

RI, optic sign, possible fluorscence and SG

Comments

This stone contains lead and special care needs to be used. Always wash your hands after handling.

Anglesite Optical Properties

Transparency

Transparent - Translucent

Refractive Index

Over the Limit 1.878-1.895

Birefringence

0.017

Optic Character

Biaxial

Optic Sign

Positive

Polariscope Reaction

Doubly Refractive (DR)

Fluorescence

SWUV: Inert to weak yellow
LWUV: Inert

CCF Reaction

Pleochroism

None

Dispersion

Strength: moderate fire Value: 0.044

Comments

Anglesite Chemistry & Crystallography

Chemical Name

lead sulfate

Chemical Formula

PbSO4

Synthesis

Crystal System

Orthorhombic

Classification

Sulfate

Nature

Natural

Crystallinity

Crystalline

Comments

Anglesite Characteristic Physical Properties

Hardness

3-3.5

Streak

White

Specific Gravity

6.3-6.39

Toughness

Poor

Inclusions

Luster

Adamantine

Stability

Fracture

Conchoidal

Cleavage

Good, in two directions, poor, in one direction

Comments

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