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Minerals - Lovdarite | TerraCollect

Mineral - Lovdarite

LovdariteK₂Na₆Be₄Si₁₄O₃₆ · 9H₂O

Chemical Properties

Mineral Class

Silicates

Toxicity

none

Formula

K₂Na₆Be₄Si₁₄O₃₆ · 9H₂O

Unit Cell

a=39,58 b=6,93 c=7,15 Z=4

Physical Properties

Hardness

5 - 6

Streak

white

Density

Normal (2-3,5)

Optical Properties

Color

whitecolorless

Birefringence

0,005

Luster

Vitreous

Transparency

translucent,

transparent

Pleochroism

Geomineralogical Properties

Crystal System

orthorhombic

Composition

Elements

Mass

SiO₂

56,13

TiO₂

0,15

Al₂O₃

1,77

Fe₂O₃

0,18

MnO

0,01

BeO

6,90

MgO

0,06

Cleavage

Deutlich auf (100), (010) und (001) und schwach entlang (110)

Fracture

Tenacity

Brittle

Point Group

Space Group

Habit

coarse, massive, prismatic, radial, tabular

Formation

hydrothermal in alkalischen Pegmatiten

Paragenesis

Twinning

Rarity

Very rare

Synonyms

Lovdarite

CaO

0,49

BaO

0,20

Na₂O

14,95

K₂O

6,28

F

0,07

Cl

0,01

H₂O

12,15

P₂O₅

0,05

Russland

Groups and Members

Zeolith-Gruppe

LOV-Zeolith-Strukturgruppe