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Minerals - Berthierite | TerraCollect

Mineral - Berthierite

BerthieriteFeSb₂S₄

Chemical Properties

Mineral Class

Sulfides and sulfosalts

Toxicity

none

Formula

FeSb₂S₄

Unit Cell

a=11.40 b=14.15 c=3.76 Z=4

Physical Properties

Hardness

2 - 3

Streak

browngraygray brown

Optical Properties

Color

blackgray

Birefringence

Luster

Metallic

Transparency

opaque

Pleochroism

Geomineralogical Properties

Crystal System

orthorhombic

Point Group

Composition

Elements

Mass

Fe

13.43

Mn

0.01

Sb

56.06

S

29.46

Romania (Palache et al. 1952)

Groups and Members

Berthierite-Group

Karten-Ebenen

Geologische KarteSatelliten Karte

Density

Heavy (3,5-6)

Cleavage

Indistinct

Fracture

splintery,

uneven

Tenacity

Brittle

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

Space Group

Pnma (62)

Habit

fibrous, acicular, prismatic, radial

Formation

In hydrothermal ore deposits

Paragenesis

Twinning

Rarity

Rarely

Synonyms

Berthierite, Anglarite, Chazellite, Martourite