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Parasibirskite (Parasibirskit)

Pictures (1 Images total)

Olshanskyit (farblos) und Parasibirskit (weiß)
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Olshanskyit (farblos) und Parasibirskit (weiß)
Größe: 80 mm; Fundort: Fuka Mine, Bitchu-cho, Takahashi, Präfektur Okayama, Region Chugoku, Insel Honshu, Japan
Copyright: slugslayer; Contribution: slugslayer
Collection: giantcrystal
Location: Japan/Honshū (Honschu), Insel/Chūgoku (Tschugoku, Chugoku), Region/Okayama, Präfektur/Takahashi/Bitchu (Bicchu)/Fuka Mine
Mineral: Olshanskyite, Parasibirskite
Image: 1266748593
License: Usage for Mineralienatlas project only
Olshanskyit (farblos) und Parasibirskit (weiß)

Größe: 80 mm; Fundort: Fuka Mine, Bitchu-cho, Takahashi, Präfektur Okayama, Region Chugoku, Insel Honshu, Japan

Collection: giantcrystal
Copyright: slugslayer
Contribution: slugslayer 2010-02-21
Locality: Fuka Mine / Bitchu (Bicchu) / Takahashi / Okayama, Präfektur / Chūgoku (Tschugoku, Chugoku), Region / Honshū (Honschu), Insel / Japan

Collectors Summary

Color weiß
Streak color weiß
Hardness (Mohs) 3.5
Cleavages vollkommen {100}
Solubility +++ Säuren
Crystal System monoklin, P21/m

Chemism

Chemical formula

Ca2[B2O5]·H2O

Chemical composition

Calcium, Bor, Sauerstoff, Wasserstoff

Unit weight: 199.792674 u; Number of atoms in the formula: 12

Info

Empirical formula:

Ca2[B2O5]·H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

1.01

2

16.67

1.0079470

2.0158940

Boron

B

10.82

2

16.67

10.8117000

21.6234000

Oxygen

O

48.05

6

50.00

15.9994300

95.9965800

Calcium

Ca

40.12

2

16.67

40.0784000

80.1568000

Analysis wt%

CaO : 56.06, B2O3 : 34.10, H2O : 9.97 (Ref: Mineralogical Magazine 98)

Strunz 9th edition incl. updates

6.BC.20

6: Borate
B: Diborate
C: Ketten u. Band (Ino) - Dioborate mit Triangeln und /oder Tetraedern
20:Sibirskit-Gruppe

Lapis Classification

V/H.02-035

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

Classification by Hölzel

6.BC.310

6: Borates
B: Diborates
C: Ino-diborates with triangles and/or tetrahedra
3: Unclassified

Dana 8th edition

26.07.01.02

26: Hydrated Borates Containing Hydroxyl or Halogen
07: Hydrated Borates Containing Hydroxyl or Halogen

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

weiß

Streak color

weiß

max. Birefringence

0.097

Birefringence chart\! Parasibirskite title=Birefringence chart Parasibirskite

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

1.556

RI value β

1.593

RI value γ / ε

1.653

Ri mean

1.601

2V angle

Biaxial (+) 75°c

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

11

Space Group

P21/m

Cell parameters a (Å)

6.699

Cell parameters b (Å)

5.427

Cell parameters c (Å)

3.553

Cell parameters a/b or c/a

1.234

Cell parameters c/b

0.655

Cell parameters α

90°

Cell parameters β

93°03

Cell parameters γ

90°

Z

1

Volume (ų)

128.994

X-Ray Powder Diffraction

6.73(70),
4.23(10),
3.354(30),
2.975(60),
2.855(20),
2.721(10),
2.237(100),
1.776(20)

XRD chart Parasibirskite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

3.5

VHN (Hardness Vickers)

121 (25g)

Density (g/cm³)

2.50 (gemessen)

2.572 ( ρ calc. Mineralienatlas )

Cleavages

vollkommen {100}

Instability

+++ Säuren

Preface

Author (Name, Year)

Kusachi & Takechi & Henmi & Kobayashi, 1998

References

Mineralogical Magazine 62 (1998), 521

Other languages

German

Parasibirskit

Spanish

Parasibirskita

English

Parasibirskite

French

Parasibirskite

Russian

Парасибирскит

CNMNC (IMA)-Number

IMA 1996-051

CNMNC symbol

Symbol

Psib

Locations with GPS information

IDs

GUSID (Global unique identifier short form) fx8Dp2UvskS_B7hbtVWKJg
GUID (Global unique identifier) A7031F7F-2F65-44B2-BF07-B85BB5558A26
Database ID 2941