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Minerals - Geminite | TerraCollect

Mineral - Geminite

GeminiteCu²⁺(AsO₃OH) · H₂O

Chemical Properties

Mineral Class

Arsenates

Toxicity

middle

Formula

Cu²⁺(AsO₃OH) · H₂O

Unit Cell

a=9,84 b=10,82 c=15,73 α=96° β=91° γ=103° Z=16

Physical Properties

Hardness

3 - 3.5

Streak

green

Density

Optical Properties

Color

green

Birefringence

0,114

Luster

Vitreous

Transparency

translucent,

transparent

Pleochroism

Geomineralogical Properties

Crystal System

triclinic

Point Group

Composition

Elements

Mass

As₂O₅

52,40

CuO

36,50

H₂O

11,00

Frankreich

Groups and Members

Koritnigit-Gruppe

Cleavage

Perfekt auf (001)

Fracture

uneven

Tenacity

Brittle

Space Group

Habit

leafy, spherical, spear-shaped, radial, tabular

Formation

Oxidationszone von Arsen-Lagerstätten

Paragenesis

Twinning

Kontaktzwillinge nach (001)

Rarity

Rarely

Synonyms

Geminite