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Minerals - Eulytine | TerraCollect

Mineral - Eulytine

EulytineBi₄(SiO₄)₃

Chemical Properties

Mineral Class

Silicates

Toxicity

none

Formula

Bi₄(SiO₄)₃

Unit Cell

a=10,29 Z=4

Physical Properties

Hardness

4.5

Streak

white

Density

Very Heavy (>6)

Optical Properties

Color

brownredorangeyellowgreen

Birefringence

Luster

Vitreous,

Adamantine

Transparency

translucent,

transparent

Pleochroism

Geomineralogical Properties

Crystal System

Composition

Elements

Mass

SiO₂

16,52

Bi₂O₃

82,23

Fe₂O₃

0,70

P₂O₅

0,40

Deutschland

Cleavage

Unvollkommen auf (110)

Fracture

uneven

Tenacity

Brittle

isometric

Point Group

Space Group

Habit

spherical, Tetrahedron

Formation

Sekundär, in hydrothermalen Bismut-Lagerstätten

Paragenesis

Twinning

Mehrfache Durchdringungszwillinge

Rarity

Rather rare

Synonyms

Eulytine