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Minerals - Chambersite | TerraCollect

Mineral - Chambersite

ChambersiteMn₃B₇O₁₃Cl

Chemical Properties

Mineral Class

Borates

Toxicity

none

Formula

Mn₃B₇O₁₃Cl

Unit Cell

Physical Properties

Hardness

7

Streak

white

Density

Normal (2-3,5)

Optical Properties

Color

grayredpinkcolorless

Birefringence

0.012

Luster

Vitreous

Transparency

transparent,

opaque

Pleochroism

Geomineralogical Properties

Crystal System

Groups and Members

Boracite-Group

Cleavage

Fracture

conchoidal,

uneven

Tenacity

orthorhombic

Point Group

orthorhombic-pyramidal - mm2

Space Group

Pca21 (29)

Habit

pyramidal, Tetrahedron

Formation

Sedimentary, as evaporite in salt deposits

Paragenesis

Twinning

Rarity

Very rare

Synonyms

Chambersite