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0.2.41

Minerals - Bismuth | TerraCollect

Mineral - Bismuth

BismuthBi

Chemical Properties

Mineral Class

Elements

Toxicity

none

Formula

Bi

Unit Cell

a=4.55 c=11.86 Z=6

Physical Properties

Hardness

2 - 2.5

Streak

whitesilver

Density

Very Heavy (>6)

Optical Properties

Color

blackgraybronze

Birefringence

Luster

Metallic

Transparency

opaque

Pleochroism

Geomineralogical Properties

Crystal System

trigonal

Composition

Elements

Mass

Bi

98.77

Sb

0.50

As

0.19

S

0.20

Mexico (Palache et al. 1952)

Groups and Members

Arsenic-Group

Karten-Ebenen

Geologische KarteSatelliten Karte

Cleavage

Perfect after {0001}, distinct after {1011}, indistinct after {1014}

Fracture

Tenacity

Supple

Point Group

ditrigonal-scalenohedral - 3m

Space Group

R3m (166)

Habit

dendritic, coarse, massive, skeletal, stair-shaped

Formation

In hydrothermal ore deposits

Paragenesis

Twinning

Rarity

Rather rare

Synonyms

Bismut, Wismut, Bismuth, Native Bismuth