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Minerals - Weilite | TerraCollect

Mineral - Weilite

WeiliteCa(HAsO₄)

Chemical Properties

Mineral Class

Arsenates

Toxicity

none

Formula

Ca(HAsO₄)

Unit Cell

a=7,06 b=6,89 c=7,20 α=97° β=103° γ=88° Z=4

Physical Properties

Hardness

1 - 10

Streak

white

Density

Normal (2-3,5)

Optical Properties

Color

whitecolorless

Birefringence

0.044

Luster

Greasy,

Earthy,

Waxy

Transparency

translucent,

opaque

Pleochroism

Geomineralogical Properties

Crystal System

triclinic

Composition

Elements

Mass

As₂O₅

61,7

CaO

33,1

H₂O

5,2

Deutschland

Groups and Members

Monetit-Gruppe

Cleavage

nd

Fracture

uneven

Tenacity

nd

Point Group

Space Group

Habit

coarse, crusty, massive, acicular, radial

Formation

Oxidationszone von hydrothermalen Arsen-Lagerstätten

Paragenesis

Twinning

Rarity

Rarely

Synonyms

Weilite