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Minerals - Olivenite | TerraCollect

Mineral - Olivenite

OliveniteCu₂[OH|AsO₄]

Chemical Properties

Mineral Class

Arsenates

Toxicity

middle

Formula

Cu₂[OH|AsO₄]

Unit Cell

a=8.59 b=8.21 c=5.93 β=90° Z=4

Physical Properties

Hardness

3

Streak

white

Density

Heavy (3,5-6)

Optical Properties

Color

whitebrowngreen

Birefringence

0.085

Luster

Vitreous,

Adamantine,

Pearly

Transparency

translucent,

transparent

Pleochroism

Geomineralogical Properties

Crystal System

Composition

Elements

Mass

As₂O₅

39.80

CuO

56.65

H₂O

3.55

England (Palache et al. 1952)

Groups and Members

Olivenite-Group

Karten-Ebenen

Geologische KarteSatelliten Karte

Cleavage

Indistinct after {101} and {110}

Fracture

uneven

Tenacity

Brittle

monoclinic

Point Group

monoclinic-prismatic - 2/m

Space Group

P21/m (11)

Habit

tufty, acicular, prismatic, radial, tabular

Formation

As a secondary mineral formed by the oxidation of arsenic-bearing copper sulfides or arsenides in the oxidation zone of ore deposits

Paragenesis

Twinning

Rarity

Rarely

Synonyms

Olivenite