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Sulfoborite (Sulfoborit)

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Sulfoborit x
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Sulfoborit x
Westeregeln bei Staßfurt/Sachsen-Anhalt;historischer Fund mit Etikett von Luigi Bardelli(1869-1905); Kristallgröße ca.3 mm
Copyright: Haubi; Contribution: Haubi
Collection: Haubi
Location: Deutschland/Sachsen-Anhalt/Salzlandkreis/Börde-Hakel/Westeregeln
Mineral: Sulfoborite
Image: 1514996905
License: Usage for Mineralienatlas project only
Sulfoborit x

Westeregeln bei Staßfurt/Sachsen-Anhalt;historischer Fund mit Etikett von Luigi Bardelli(1869-1905); Kristallgröße ca.3 mm

Collection: Haubi
Copyright: Haubi
Contribution: Haubi 2018-01-03
Locality: Westeregeln / Börde-Hakel / Salzlandkreis / Sachsen-Anhalt / Deutschland

Collectors Summary

Color farblos
Streak color weiß
Hardness (Mohs) 4.00 - 4.50
Solubility +++ Säuren, wird durch H2O zersetzt
Crystal System orthorhombisch, Pnma

Chemism

Chemical formula

Mg3B2(SO4)(OH)8(OH,F)2

Chemical composition

Magnesium, Bor, Fluor, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 361.671083125 u; Number of atoms in the formula: 29.5

Info

Empirical formula:

Mg3B2(SO4)(OH)8((OH)0.75F0.25)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

2.65

9.5

32.20

1.0079470

9.5754965

Boron

B

5.98

2

6.78

10.8117000

21.6234000

Oxygen

O

59.72

13.5

45.76

15.9994300

215.9923050

Fluorine

F

2.63

0.5

1.69

18.9984033

9.4992016

Magnesium

Mg

20.16

3

10.17

24.3050600

72.9151800

Sulfur

S

8.87

1

3.39

32.0655000

32.0655000

Analysis wt%

MgO : 30.87, CaO : 1.86, B2O3 : 22.24, SO3 : 19.69, F : 4.70, H2O : 20.10 (Ref: Doklady Akademiia Nauk, SSSR 58)

Strunz 9th edition incl. updates

6.AC.55

6: Borate
A: Monoborate
C: B(O,OH)4, ohne und mit zusätzlichen [Anionen]; 1(T), 1(T)+OH, etc.
55:Sulfoborit-Gruppe

Lapis Classification

V/G.11-010

V: NITRATE, CARBONATE UND BORATE
G: Inselborate
11: [BO4] 5-- und [B(OH)4] 1--Tetraeder

Classification by Hölzel

6.AC.400

6: Borates
A: Monoborates
C:
4: Moydite-Cahnite-Group (with CO3, SO4, PO4, AsO4 - heterotypes)

Dana 8th edition

27.01.05.01

27: Compound Borates
01: Compound Borates

IMA status

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos

Streak color

weiß

max. Birefringence

0.024

Birefringence chart\! Sulfoborite title=Birefringence chart Sulfoborite

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

1.527

RI value β

1.536

RI value γ / ε

1.551

Ri mean

1.538

2V angle

Biaxial (-) 80°

Crystallography

Crystal System

orthorhombisch

Class (H-M)

mmm

Space Group number

62

Space Group

Pnma

Cell parameters a (Å)

10.132

Cell parameters b (Å)

12.537

Cell parameters c (Å)

7.775

Cell parameters a/b or c/a

0.808

Cell parameters c/b

0.620

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

4

Volume (ų)

987.618

X-Ray Powder Diffraction

5.55(40),
3.47(100),
3.13(80),
3.09(100),
2.973(70),
2.425(50),
2.050(100),
1.903(90)

XRD chart Sulfoborite

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)

4.00 - 4.50

VHN (Hardness Vickers)

230 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.44 (gemessen)

2.432 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren, wird durch H2O zersetzt

Preface

Author (Name, Year)

Naupert & Wense, 1893

References

Handbook of Mineralogy (Anthony et al.), 5 (2003), 674

Other languages

German

Sulfoborit

Spanish

Sulfoborita

English

Sulfoborite

French

Sulfoborite

Russian

Сульфоборит

Simplified Chinese

硫硼镁石

Alternative Name

Sulphoborit

Spanish

Sulphoborita

Sulphoborite

CNMNC symbol

Symbol

Sbo

Locations with GPS information

IDs

GUSID (Global unique identifier short form) haB6bWhXaUC8-I5vMNsn9w
GUID (Global unique identifier) 6D7AA085-5768-4069-BCF8-8E6F30DB27F7
Database ID 3690