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Malinkoite

Collectors Summary

Hardness (Mohs) 7
Cleavages mäßig {001} und {h00}
Fracture uneben bis splittrig
Solubility - kalte HCl, HNO3, H2SO4
Crystal System hexagonal, P63

Chemism

Chemical formula

Na[BSiO4]

Chemical composition

Natrium, Silicium, Bor, Sauerstoff

Unit weight: 125.8847202 u; Number of atoms in the formula: 7

Info

Empirical formula:

Na[BSiO4]

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Boron

B

8.59

1

14.29

10.8117000

10.8117000

Oxygen

O

50.84

4

57.14

15.9994300

63.9977200

Sodium

Na

18.26

1

14.29

22.9897702

22.9897702

Silicon

Si

22.31

1

14.29

28.0855300

28.0855300

Analysis wt%

Ø Na2O : 24.36, B2O3 : 26.88, SiO2 : 47.83 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 2000)

Strunz 9th edition incl. updates

9.FA.10

9: Silikate (Germanate)
F: Gerüstsilikate (Tektosilikate) ohne zeolithisches H2O
A: Gerüstsilikate (Tektosilicates) ohne weitere [Anionen]
10:Malinkoit-Gruppe

Lapis Classification

VIII/J.02-070

VIII: SILIKATE
J: Gerüstsilikate (mit Zeolithen)
2: Ohne tetraederfremde Anionen

Classification by Hölzel

9.FD.300

9: SILICATES
F: Tektosilicates
D: Plagioclase-Group

Dana 8th edition

76.04.02.01

76: Tektosilicates Tectosilicate Al-Si Framework
04: Tektosilicates Tectosilicate Al-Si Framework with B-Si frameworks

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

max. Birefringence

0.009

Birefringence chart\! Malinkoite title=Birefringence chart Malinkoite

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

1.582

RI value γ / ε

1.591

Ri mean

1.585

2V angle

Uniaxial (-)

Optical Data Luminescence

Color LW-UV (365nm)

 

grünlich gelb

LW-UV Intensity

stark

Color SW-UV (254nm)

 

violett

SW-UV Intensity

sehr schwach

SW-UV Other Colors

 

lilarosa

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

hexagonal

Class (H-M)

6

Space Group number

173

Space Group

P63

Cell parameters a (Å)

13.896

Cell parameters b (Å)

-

Cell parameters c (Å)

7.700

Cell parameters a/b or c/a

0.554

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

120°

Z

18

Volume (ų)

1287.659

X-Ray Powder Diffraction

4.74(40),
3.86(60),
3.61(60),
2.780(100),
2.320(70),
2.216(90),
1.928(50),
1.721(70)

XRD chart Malinkoite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

7

VHN (Hardness Vickers)

1300 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.90 (gemessen)

2.922 ( ρ calc. Mineralienatlas )

Cleavages

mäßig {001} und {h00}

Fracture

uneben bis splittrig

Tenacity

spröde

Instability

- kalte HCl, HNO3, H2SO4

Preface

Author (Name, Year)

Khomyakov & Nechelyustov & Sokolova & Hawthorne, 2000

References

Zapiski Vserossiskogo Mineralogicheskogo Obshchetstva 129 (2000) (6), 35

Other languages

German

Malinkoit

English

Malinkoite

French

Malinkoite

Spanish

Malinkoíta

Russian

Малинкоит

CNMNC (IMA)-Number

IMA 2000-009

CNMNC symbol

Symbol

Mlk

Locations with GPS information

IDs

GUSID (Global unique identifier short form) NyCJmXHHS0y1V5AaQ3q8OQ
GUID (Global unique identifier) 99892037-C771-4C4B-B557-901A437ABC39
Database ID 2343