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Buryatite

Pictures (1 Images total)

Buryatit
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1588094082
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Buryatit
hellbraune, prismatische Kristalle von Buryatit, Fuka Mine, Bitchu-cho, Takahashi, Honshu, Japan; BB < 1 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: Japan/Honshū (Honschu), Insel/Chūgoku (Tschugoku, Chugoku), Region/Okayama, Präfektur/Takahashi/Bitchu (Bicchu)/Fuka Mine
Mineral: Buryatite
Image: 1588094082
License: Usage for Mineralienatlas project only
Buryatit

hellbraune, prismatische Kristalle von Buryatit, Fuka Mine, Bitchu-cho, Takahashi, Honshu, Japan; BB < 1 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-04-28
Locality: Fuka Mine / Bitchu (Bicchu) / Takahashi / Okayama, Präfektur / Chūgoku (Tschugoku, Chugoku), Region / Honshū (Honschu), Insel / Japan

Collectors Summary

Color rosa, hellgrau mit violettem Farbton
Streak color weiß
Lustre Glasglanz, erdig
Hardness (Mohs) 2.5
Cleavages vollkommen {001}
Fracture rauh
Solubility +++ verdünnte Säuren
Crystal System trigonal, P31c

Chemism

Chemical formula

Ca3(Si,Fe3+,Al)(SO4)B(OH)4(OH,O)6·12H2O

Chemical composition

Aluminium, Calcium, Eisen, Silicium, Bor, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 648.15888932 u; Number of atoms in the formula: 64.5

Info

Empirical formula:

Ca3(Si0.6Fe0.3Al0.1)(SO4)B(OH)4((OH)0.75O0.25)6·12H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

5.05

32.5

50.39

1.0079470

32.7582775
Boron

B

1.67

1

1.55

10.8117000

10.8117000
Oxygen

O

64.18

26

40.31

15.9994300

415.9851800
Aluminium

Al

0.42

0.1

0.16

26.9815382

2.6981538
Silicon

Si

2.60

0.6

0.93

28.0855300

16.8513180
Sulfur

S

4.95

1

1.55

32.0655000

32.0655000
Calcium

Ca

18.55

3

4.65

40.0784000

120.2352000
Iron

Fe

2.58

0.3

0.47

55.8452000

16.7535600

Analysis wt%

Ø SiO2 : 5.60, Al2O3 : 0.75, Fe2O3 : 2.20, CaO : 25.88, SO3 : 12.52, B2O3 : 5.70, H2O : 45.80 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 2001)

Strunz 9th edition incl. updates

7.DG.15

7: Sulfate (Selenate, Tellurate, Chromate, Molybdate, Wolframate)
D: Sulfate (Selenate, etc.) mit weitere Anionen, mit H2O
G: Mit großen bis mittelgroßen Kationen; mit NO3, CO3, B(OH)4, SiO4 oder IO3
15:Ettringit-Gruppe

Lapis Classification

VI/D.13-060

VI: SULFATE, CHROMATE, MOLYBDATE UND WOLFRAMATE
D: Wasserhaltige Sulfate, mit fremden Anionen
13: Mittelgroße und sehr große Kationen; Ettringit-Gruppe

Classification by Hölzel

7.DK.160

7: SULFATES CHROMATES MOLYBDATES WOLFRAMATES
D: Sulfates (+Anions +Water)
K: Ettringite-Group

Dana 8th edition

31.10.02.03

31: Hydrated Sulfates Containing Hydroxyl or Halogen
10: Hydrated Sulfates Containing Hydroxyl or Halogen miscellaneous

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Ettringite group

Optical Properties

Color

rosa, hellgrau mit violettem Farbton

Streak color

weiß

Diaphaneity (Transparency)

durchscheinend

Lustre

Glasglanz, erdig

max. Birefringence

0.009
Birefringence chart\! Buryatite title=Birefringence chart Buryatite

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

1.523

RI value γ / ε

1.532

Ri mean

1.526

2V angle

Uniaxial (+)

Optical Data Luminescence

Color SW-UV (254nm)

  

blau

SW-UV Intensity

schwach

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

trigonal

Class (H-M)

3m

Space Group number

159

Space Group

P31c

Cell parameters a (Å)

11.14

Cell parameters b (Å)

-

Cell parameters c (Å)

20.99

Cell parameters a/b or c/a

1.884

Cell parameters c/b

-

Z

4

Volume (ų)

2255.867

X-Ray Powder Diffraction

9.70(80),
3.85(60),
3.040(80),
2.736(60),
2.596(100),
2.374(60),
2.121(90),
1.833(60)
XRD chart Buryatite

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

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

2.5

VHN (Hardness Vickers)

53 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

1.895 (berechnet)

1.908 ( ρ calc. Mineralienatlas )

Cleavages

vollkommen {001}

Fracture

rauh

Instability

+++ verdünnte Säuren

(Co-)Type locality

(Co-)Type locality

Russland/Ferner Osten, Föderationskreis/Burjatien (Buryatia), Republik/Vitim Plateau/Solongo Bor-Lagerstätte

Preface

Name from

der Region der Typlokalität

Author (Name, Year)

Malinko & Chukanov & Dubinchuk & Zadov & Koporulina, 2001

References

Zapiski Vserossiskogo Mineralogicheskogo Obshchetstva 130 (2001) (2), 72

IMA group assignments

Other languages

German

Buryatit

Spanish

Buryatita

English

Buryatite

French

Buryatite

Russian

Бурятит

Simplified Chinese

羟硼钙矾石

CNMNC (IMA)-Number

IMA 2000-021

CNMNC symbol

Symbol

Buy

Locations with GPS information

IDs

GUSID (Global unique identifier short form) 923KdklNbEmivqaflSCkOw
GUID (Global unique identifier) 76CA6DF7-4D49-496C-A2BE-A69F9520A43B
Database ID 532