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Minerals - Anglesite | TerraCollect

Mineral - Anglesite

AnglesitePb[SO₄]

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Chemical Properties

Mineral Class

Sulphates

Toxicity

middle

Formula

Pb[SO₄]

Unit Cell

a=8.48 b=5.40 c=6.96 Z=4

Physical Properties

Hardness

2.5 - 3

Streak

white

Density

Very Heavy (>6)

Optical Properties

Color

whitegrayyellowgreencolorless

Birefringence

0.017

Luster

Greasy,

Adamantine

Transparency

translucent,

transparent,

opaque

Pleochroism

Geomineralogical Properties

Crystal System

Groups and Members

Baryte-Group

Map-Layer

Geological MapSatellite Map

Name and first discovery : Named after the Welsh island of Anglesey, where the mineral was first discovered in 1832.

Abbreviation : Ang

Cleavage

Good after {100}, good after {210} distinct after {010}

Fracture

conchoidal

Tenacity

Brittle

orthorhombic

Point Group

orthorhombic-dipyramidal - 2/m 2/m 2/m

Space Group

Pnma (62)

Habit

blocky, dipyramidal, granular, crusty, prismatic, spear-shaped, spear-shaped, Rhombohedral, tabular

Formation

Secondarily, as a typical product in the oxidation zone of lead-zinc deposits through the chemical alteration of galena (lead sulfide) in the presence of sulfate-containing, acidic solutions.

Paragenesis

Twinning

Rarity

Common

Synonyms

Anglesite

Varieties

Barytoanglesit, Cupro-Anglesit