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Sibirskite (Sibirskit)

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Sibirskit
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Sibirskit
weißes Aggregat von Sibirskit, Novofrolovskoye Lagerstätte, Turjinsk, Swerdlowsk, Russland; BB ~ 7 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: Russland/Ural, Föderationskreis/Swerdlowsk (Sverdlovskaya, Sverdlovsk), Oblast/Tur'insk-Auerbakovsk Erzfeld/Krasnoturjinsk/Turya, Fluss/Turjinsk/Novofrolovskoye B-Cu-Lagerstätte
Mineral: Sibirskite
Image: 1584897526
License: Usage for Mineralienatlas project only
Sibirskit

weißes Aggregat von Sibirskit, Novofrolovskoye Lagerstätte, Turjinsk, Swerdlowsk, Russland; BB 7 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-03-22
Locality: Novofrolovskoye B-Cu-Lagerstätte / Turjinsk / Turya, Fluss / Krasnoturjinsk / Tur'insk-Auerbakovsk Erzfeld / Swerdlowsk (Sverdlovskaya, Sverdlovsk), Oblast / Ural, Föderationskreis / Russland

You find additional specimen at the Geolitho Museum

Collectors Summary

Color farblos, weiß, blassgrau
Lustre Glasglanz
Hardness (Mohs) 4.5
Solubility +++ Säuren, - H2O
Crystal System monoklin, P21/a

Chemism

Chemical formula

CaH(BO3)

Chemical composition

Calcium, Bor, Sauerstoff, Wasserstoff

Unit weight: 99.896337 u; Number of atoms in the formula: 6

Info

Empirical formula:

CaH(BO3)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

1.01

1

16.67

1.0079470

1.0079470
Boron

B

10.82

1

16.67

10.8117000

10.8117000
Oxygen

O

48.05

3

50.00

15.9994300

47.9982900
Calcium

Ca

40.12

1

16.67

40.0784000

40.0784000

Analysis wt%

CaO : 56.14, B2O3 : 34.85, H2O : 9.02 (Ref: berechnet)

Strunz 9th edition incl. updates

6.BA.15

6: Borate
B: Diborate
A: Insel (Neso)-Diborate mit Doppel-Triangeln B2(O,OH)5;2(2Δ); 2(2Δ) + OH, etc.
15:Szaibelyit-Gruppe

Lapis Classification

V/H.02-030

V: NITRATE, CARBONATE UND BORATE
H: Gruppenborate
2: Planare Gruppen [B2O5] 4- bis [B2O7] 8-

Classification by Hölzel

6.AA.130

6: Borates
A: Monoborates
A: BO3, without additional anions - 1(P) - REM: P = planar trigonal anion
1: Sassolite-Group

Dana 8th edition

25.02.02.01

25: Anhydrous Borates Containing Hydroxyl or Halogen
02: Anhydrous Borates Containing Hydroxyl or Halogen

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos, weiß, blassgrau

Diaphaneity (Transparency)

durchscheinend

Lustre

Glasglanz

max. Birefringence

0.103
Birefringence chart\! Sibirskite title=Birefringence chart Sibirskite

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

1.555

RI value β

1.643

RI value γ / ε

1.658

Ri mean

1.619

2V angle

Biaxial (-) 43° (gemessen) 42.6° (berechnet)

Orientation

OAP ≃ {100}

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/a

Cell parameters a (Å)

3.562

Cell parameters b (Å)

9.523

Cell parameters c (Å)

8.623

Cell parameters a/b or c/a

0.374

Cell parameters c/b

0.905

Cell parameters α

90°

Cell parameters β

119.45

Cell parameters γ

90°

Z

4

Volume (ų)

254.705

Crystal structure

aufgeklärt, siehe Miura, H, Kusachi, I.: Crystal structure of sibirskite (CaHBO3) by Monte Carlo simulation and Rietveld refinement. J.Min.Petrol.Sci. (Japan) 103 (2008) S.156-160.

Polymorph mit Parasibirskit

X-Ray Powder Diffraction

3.74(40),
3.29(60),
2.93(100),
2.58(100),
2.20(40),
2.05(40),
1.934(40),
1.878(60)
XRD chart Sibirskite

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)

4.5

VHN (Hardness Vickers)

298 - 339, Ø 339 (25g)

Density (g/cm³)

2.59 (berechnet) 2.58 (gemessen)

2.605 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren, - H2O

(Co-)Type locality

(Co-)Type locality

Russland/Sibirien, Föderationskreis/Krasnojarsk (Krasnojarski), Krai/Chakassien/Yuliya Svintsovaya

Type material

A. E. Fersman Mineralogical Museum, Akademie der Wissenschaften, Moskau, Russland

Collection number of type material

64709

Preface

Name from

Seinem ersten Fundort "Sibirien"

Author (Name, Year)

Vasilkova, 1962

References

Mineralogical Journal (Tokyo) 19 (1997), 109

Miura, H, Kusachi, I.: Crystal structure of sibirskite (CaHBO3) by Monte Carlo simulation and Rietveld refinement. J.Min.Petrol.Sci. (Japan) 103 (2008) S.156-160. (neue Formel)

Other languages

German

Sibirskit

Spanish

Sibirskita

English

Sibirskite

French

Sibirskite

Russian

Сибирскит

CNMNC symbol

Symbol

Sib

Locations with GPS information

IDs

GUSID (Global unique identifier short form) xEAWXzJlREyw39Voj5pnHA
GUID (Global unique identifier) 5F1640C4-6532-4C44-B0DF-D5688F9A671C
Database ID 3511