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Minerals - Shomiokite-(Y) | TerraCollect

Mineral - Shomiokite-(Y)

Shomiokite-(Y)Na₃(Y,REE)[CO₃]₃ · 3H₂O

Chemical Properties

Mineral Class

Carbonates

Toxicity

radioactive

Formula

Na₃(Y,REE)[CO₃]₃ · 3H₂O

Unit Cell

a=10,10 b=17,35 c=6,00 Z=4

Physical Properties

Hardness

2 - 3

Streak

white

Density

Normal (2-3,5)

Optical Properties

Color

whiteyellowpinkyellow whitepink whitecolorless

Birefringence

0,003

Luster

Vitreous,

Silky,

Waxy

Transparency

translucent,

transparent

Pleochroism

Geomineralogical Properties

Composition

Elements

Mass

CO₂

33,36

Y₂O₃

19,05

La₂O₃

0,20

Ce₂O₃

1,81

Pr₂O₃

0,52

Nd₂O₃

2,79

Sm₂O₃

0,95

Cleavage

Perfekt auf (110)

Fracture

Tenacity

Crystal System

orthorhombic

Point Group

Space Group

Habit

granular, massive, acicular, prismatic, prismatic, radial

Formation

Magmatisch, in alkalischen Pegmatiten, wie Gabbro-Syeniten

Paragenesis

Twinning

Rarity

Rarely

Synonyms

Shomiokite-(Y)

Gd₂O₃

1,05

Tb₂O₃

0,36

Dy₂O₃

2,81

Ho₂O₃

0,73

Er₂O₃

2,13

Eu₂O₃

0,01

Yb₂O₃

1,55

Lu₂O₃

0,26

CaO

0,01

Na₂O

23,24

H₂O

13,65

Kanada