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Sakhaite

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Sakhait
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1514998298
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Sakhait
Titovskoje,Polar-Jakutien/Rußland; Größe 15 x 13mm
Copyright: Haubi; Contribution: Haubi
Collection: Haubi
Location: Russland/Ferner Osten, Föderationskreis/Sacha (Sakha, Jakutien, Якутия), Republik/Tas-Khayakhtakh-Gebirge/Titovskoe (Titovskoye) Bor-Lagerstätte
Mineral: Sakhaite
Image: 1514998298
License: Usage for Mineralienatlas project only
Sakhait

Titovskoje,Polar-Jakutien/Rußland; Größe 15 x 13mm
Collection: Haubi
Copyright: Haubi
Contribution: Haubi 2018-01-03
Locality: Titovskoe (Titovskoye) Bor-Lagerstätte / Tas-Khayakhtakh-Gebirge / Sacha (Sakha, Jakutien, Якутия), Republik / Ferner Osten, Föderationskreis / Russland

Collectors Summary

Color hellgrau
Streak color weiß
Lustre Glasglanz, geringfügig Fettglanz
Hardness (Mohs) 5
Solubility +++ Säuren
Crystal System kubisch, Fd3m

Chemism

Chemical formula

Ca48Mg16Al(SiO3OH)4(CO3)16(BO3)28 ·(H2O)3(HCl)3

Chemical composition

Aluminium, Calcium, Chlor, Magnesium, Silicium, Bor, Kohlenstoff, Sauerstoff, Wasserstoff

Unit weight: 5482.2447392 u; Number of atoms in the formula: 280

Info

Empirical formula:

Ca48Mg16Al(SiO3OH)4(CO3)16(BO3)28·(H2O)3(HCl)3

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.24

13

4.64

1.0079470

13.1033110
Boron

B

5.52

28

10.00

10.8117000

302.7276000
Carbon

C

3.51

16

5.71

12.0107800

192.1724800
Oxygen

O

44.07

151

53.93

15.9994300

2,415.9139300
Magnesium

Mg

7.09

16

5.71

24.3050600

388.8809600
Aluminium

Al

0.49

1

0.36

26.9815382

26.9815382
Silicon

Si

2.05

4

1.43

28.0855300

112.3421200
Chlorine

Cl

1.94

3

1.07

35.4532000

106.3596000
Calcium

Ca

35.09

48

17.14

40.0784000

1,923.7632000

Analysis wt%

CO2 : 14.33, B2O3 : 17.65, MgO : 12.54, CaO : 50.18, H2O : 2.75, Cl : 2.63 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 66)

Strunz 9th edition incl. updates

6.AB.65

6: Borate
A: Monoborate
B: BO3 mit zusätzlichen Anionen; 1(Δ) + OH, etc.
65:Sakhait-Gruppe

Lapis Classification

V/G.06-050

V: NITRATE, CARBONATE UND BORATE
G: Inselborate
6: [BO3] 3--Inseln

Classification by Hölzel

6.AB.820

6: Borates
A: Monoborates
B: BO3, with additional anions - 1(P)+OH, etc.
8: Gaudefroyite-Sakhaite-Group (heterotypes, homeotypes Sakhaite, Harkerite)

Dana 8th edition

27.01.04.01

27: Compound Borates
01: Compound Borates

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

hellgrau

Streak color

weiß

Diaphaneity (Transparency)

transparent

Lustre

Glasglanz, geringfügig Fettglanz

RI value α / ω / n

1.638 - 1.641

Ri mean

1.640

Anisotropism

Isotropisch

Crystallography

Crystal System

kubisch

Class (H-M)

m3m

Space Group number

227

Space Group

Fd3m

Cell parameters a (Å)

14.685

Cell parameters b (Å)

-

Cell parameters c (Å)

-

Cell parameters a/b or c/a

1

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

1

Volume (ų)

3166.809

X-Ray Powder Diffraction

8.50(10),
5.21(20),
3.382(20),
2.607(100),
2.129(40),
2.066(10),
1.844(10),
1.505(10)
XRD chart Sakhaite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

5

VHN (Hardness Vickers)

390 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.81 (gemessen)

2.874 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren

(Co-)Type locality

(Co-)Type locality

Russland/Ferner Osten, Föderationskreis/Sacha (Sakha, Jakutien, Якутия), Republik/Tas-Khayakhtakh-Gebirge/Titovskoe (Titovskoye) Bor-Lagerstätte

Type material

Fersman Mineralogical Museum, Academy of Sciences, Moskau, Russland

Collection number of type material

67237

Preface

Name from

Sakha, dem jakutischen Wort für Jakutien.

Author (Name, Year)

Ostrovskaya & Pertsev & Nikitina, 1966

References

Crystallography Reports 50 (2005), 194

Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 95 (1966), 193

R. James Evans, Lee A. Groat, Jan Cempírek, Radek Škoda, Edward S. Grew, Cyrielle Bernard: The crystal chemistry of the sakhaite–harkerite solid solution. American Mineralogist Volume 103 (2018) S. 1749–1760.

Other languages

German

Sakhait

French

Sakhaite

English

Sakhaite

Spanish

Sakhaíta

Russian

Сахаит

Traditional Chinese

碳硼鈣鎂石

Simplified Chinese

碳硼钙镁石

Alternative Name

Simplified Chinese

萨哈石

Traditional Chinese

薩哈石

CNMNC (IMA)-Number

IMA 1965-035

CNMNC symbol

Symbol

Skh

Locations with GPS information

IDs

GUSID (Global unique identifier short form) qNk6e_e48UONXxtV4Bg_ew
GUID (Global unique identifier) 7B3AD9A8-B8F7-43F1-8D5F-1B55E0183F7B
Database ID 3362