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Minerals - Benstonite | TerraCollect

Mineral - Benstonite

BenstoniteBa₆Ca₆Mg(CO₃)₁₃

Chemical Properties

Mineral Class

Carbonates

Toxicity

middle

Formula

Ba₆Ca₆Mg(CO₃)₁₃

Unit Cell

a=18.28 c=8.65 Z=3

Physical Properties

Hardness

3 - 4

Streak

white

Density

Heavy (3,5-6)

Optical Properties

Color

whiteyellowcolorless

Birefringence

0.163

Luster

Vitreous

Transparency

translucent,

transparent

Pleochroism

Geomineralogical Properties

Crystal System

trigonal

Composition

Elements

Mass

CO₂

31.35

MnO

0.35

MgO

1.69

USA (Lippmann 1962)

Karten-Ebenen

Geologische KarteSatelliten Karte

Cleavage

Distinct after {3142}

Fracture

Tenacity

Point Group

rhombohedral - 3

Space Group

R3 (148)

Habit

leafy, stalactitic, tabular

Formation

In hydrothermal Baryte veins

Paragenesis

Twinning

Rarity

Very rare

Synonyms

Benstonite