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Minerals - Baumhauerite | TerraCollect

Mineral - Baumhauerite

BaumhaueritePb₁₂As₁₆S₃₆

Chemical Properties

Mineral Class

Sulfides and sulfosalts

Toxicity

middle

Formula

Pb₁₂As₁₆S₃₆

Unit Cell

a=22.80 b=8.36 c=7.89 α=90° β=97° γ=90° Z=4

Physical Properties

Hardness

3

Streak

brown

Density

Heavy (3,5-6)

Optical Properties

Color

blackgraysilver

Birefringence

Luster

Metallic

Transparency

opaque

Pleochroism

Geomineralogical Properties

Crystal System

triclinic

Composition

Elements

Mass

Pb

47.90

Tl

0.40

As

27.20

Sb

0.60

S

23.90

Switzerland (Palache et al. 1952)

Groups and Members

Sartorit-Group

Karten-Ebenen

Geologische KarteSatelliten Karte

Cleavage

Perfect after {100}

Fracture

conchoidal

Tenacity

Brittle

Point Group

triclinic-pinacoidal - 1

Space Group

P1 (2)

Habit

prismatic, tabular

Formation

In hydrothermal ore deposits

Paragenesis

Twinning

Polysynthetic twins after {100}

Rarity

Rarely

Synonyms

Baumhauerite