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Minerals - Paradamite | TerraCollect

Mineral - Paradamite

ParadamiteZn₂(AsO₄)(OH)

Chemical Properties

Mineral Class

Arsenates

Toxicity

low

Formula

Zn₂(AsO₄)(OH)

Unit Cell

a=5,64 b=5,83 c=6,70 α=103° β=104° γ=88° Z=2

Physical Properties

Hardness

3.5

Streak

white

Density

Optical Properties

Color

whiteyellowyellow white

Birefringence

0,054

Luster

Vitreous,

Resinous

Transparency

translucent,

transparent

Pleochroism

Geomineralogical Properties

Crystal System

Composition

Elements

Mass

As₂O₅

40,17

Fe₂O₃

0,12

FeO

0,45

ZnO

56,22

H₂O

3,44

Mexiko

Groups and Members

Tarbuttit-Gruppe

Found in 1956 in the Ojuela Mine in Mexico and named after the French mineralogist Gilbert Joseph Adam.

Dimorphic to orthorhombicadamine .

Famous sites

Mexico

(TL) Ojuela Mine/ Municipio Mapimí/ Durango/ Mexico

Namibia

Tsumeb Mine/ Tsumeb/ Oshikoto/ Namibia

Cleavage

Perfekt auf (010)

Fracture

Tenacity

Brittle

triclinic

Point Group

Space Group

Habit

leafy, dipyramidal, prismatic, Rhombohedron, tardy, spear-shaped, tabular

Formation

Oxidationszone von polymetallischen Lagerstätten

Paragenesis

Twinning

Rarity

Rarely

Synonyms

Paradamite