Loading data...

Impressum Privacy Policy

© 2026 TerraCollect

0.2.41

Minerals - Liroconite | TerraCollect

Mineral - Liroconite

LiroconiteCu₂Al[(OH)₄|AsO₄] · 4H₂O

Chemical Properties

Mineral Class

Arsenates

Toxicity

low

Formula

Cu₂Al[(OH)₄|AsO₄] · 4H₂O

Unit Cell

a=12.66 b=7.56 c=9.91 β=91° Z=4

Physical Properties

Hardness

2 - 2.5

Streak

blue

Density

Normal (2-3,5)

Optical Properties

Color

greenblue

Birefringence

0.063

Luster

Vitreous,

Resinous

Transparency

translucent,

transparent

Pleochroism

Geomineralogical Properties

Crystal System

monoclinic

Composition

Elements

Mass

P₂O₅

3.73

As₂O₅

23.05

Al₂O₃

10.85

Fe₂O₃

0.98

CuO

36.38

H₂O

25.01

England (Palache et al. 1952)

Cleavage

Indistinct after {110} and {011}

Fracture

conchoidal,

uneven

Tenacity

Brittle

Point Group

monoclinic-prismatic - 2/m

Space Group

C2/c (15)

Habit

dipyramidal, lenticular

Formation

Secondary, through aqueous oxidation of arsenides and copper-bearing sulfides (such as chalcopyrite or tennantite) in the oxidation zone of supergene copper deposits.

Paragenesis

Twinning

Contact twins after {100}

Rarity

Rare

Synonyms

Liroconite