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Minerals - Chalcopyrite | TerraCollect

Mineral - Chalcopyrite

ChalcopyriteCuFeS₂

Chemical Properties

Mineral Class

Sulfides and sulfosalts

Toxicity

none

Formula

CuFeS₂

Unit Cell

a=5.28 c=10.40 Z=4

Physical Properties

Hardness

3.5 - 4

Streak

blackgreengreen black

Optical Properties

Color

gray

Birefringence

Luster

Metallic

Transparency

opaque

Pleochroism

Geomineralogical Properties

Crystal System

tetragonal

Point Group

Composition

Elements

Mass

Cu

35.03

Fe

31.00

S

34.96

Canada (Palache et al. 1952)

Groups and Members

Chalcopyrite-Group

Karten-Ebenen

Geologische KarteSatelliten Karte

Density

Heavy (3,5-6)

Cleavage

Indistinct after {011}

Fracture

uneven

Tenacity

Brittle

tetragonal-scalenohedral - 42m

Space Group

I42b (122)

Habit

massive, Tetrahedron, grape-shaped

Formation

In orthomagmatic ore deposits, in hydrothermal vein ore deposits, in VHMS/SEDEX deposits

Paragenesis

Twinning

Contact twins after {112}

Rarity

Very common

Synonyms

Chalcopyrite