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Roweite

Pictures (1 Images total)

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Shijiangshan Mine,Chifeng/Innere Mongolei,China; Bildbreite ca. 5 cm
Copyright: Haubi; Contribution: Haubi
Collection: Haubi
Location: China/Innere Mongolei (Neimenggu)/Ulanhad Bund (Chifeng, Präf)/Chifeng, Stadt/Hexigten-Banner (Keshiketeng)/Huanggang-Sumugou, LS-Bezirk/Huanggang/Shijiangshan Lagerstätte
Mineral: Roweite
Image: 1520181895
License: Usage for Mineralienatlas project only
Roweit xx

Shijiangshan Mine,Chifeng/Innere Mongolei,China; Bildbreite ca. 5 cm

Collection: Haubi
Copyright: Haubi
Contribution: Haubi 2018-03-04
Locality: Shijiangshan Lagerstätte / Huanggang / Huanggang-Sumugou, LS-Bezirk / Hexigten-Banner (Keshiketeng) / Chifeng, Stadt / Ulanhad Bund (Chifeng, Präf) / Innere Mongolei (Neimenggu) / China

Collectors Summary

Color hellbraun
Streak color hellbraun
Hardness (Mohs) 4.75
Solubility +++ Säuren
Crystal System orthorhombisch, Pbam

Chemism

Chemical formula

Ca2Mn22+B4O7(OH)6

Chemical composition

Calcium, Mangan, Bor, Sauerstoff, Wasserstoff

Unit weight: 447.3199718 u; Number of atoms in the formula: 27

Info

Empirical formula:

Ca2Mn2B4O7(OH)6

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

1.35

6

22.22

1.0079470

6.0476820

Boron

B

9.67

4

14.81

10.8117000

43.2468000

Oxygen

O

46.50

13

48.15

15.9994300

207.9925900

Calcium

Ca

17.92

2

7.41

40.0784000

80.1568000

Manganese

Mn

24.56

2

7.41

54.9380499

109.8760998

Analysis wt%

MnO : 28.30, MgO : 1.66, ZnO : 3.13, CaO : 25.40, B2O3 : 32.40, H2O : 8.51 (Ref: American Mineralogist 74)

Strunz 9th edition incl. updates

6.DA.25

6: Borate
D: Tetraborate
A: Insel(Neso)-Tetraborate
25:Roweit-Gruppe

Lapis Classification

V/H.11-020

V: NITRATE, CARBONATE UND BORATE
H: Gruppenborate
11: Planare und tetraedrische Gruppen [B3O5] 1- bis [B6O10] 2-

Classification by Hölzel

6.DA.130

6: Borates
D: Tetraborates
A: Nesotetraborates
1: Borax-Group - 4(2P+2T)

Dana 8th edition

25.04.01.01

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

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

hellbraun

Streak color

hellbraun

Diaphaneity (Transparency)

transparent

max. Birefringence

0.015

Birefringence chart\! Roweite title=Birefringence chart Roweite

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

1.647

RI value β

1.659

RI value γ / ε

1.662

Ri mean

1.656

2V angle

Biaxial (-) 22°~

Crystallography

Crystal System

orthorhombisch

Class (H-M)

mmm

Space Group number

55

Space Group

Pbam

Cell parameters a (Å)

9.057

Cell parameters b (Å)

13.357

Cell parameters c (Å)

8.289

Cell parameters a/b or c/a

0.678

Cell parameters c/b

0.621

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

4

Volumne (ų)

1002.756

X-Ray Powder Diffraction

3.974(100),
3.059(30),
2.600(70),
2.264(30),
2.184(50),
2.128(40),
1.708(30),
1.641(30)

XRD chart Roweite

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)

4.75

VHN (Hardness Vickers)

340 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.935

2.963 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren

Preface

Author (Name, Year)

Berman & Gonyer, 1937

References

Handbook of Mineralogy (Anthony et al.), 5 (2003), 601

Other languages

Spanish

Rouxelita

German

Roweit

French

Roweite

English

Roweite

Russian

Ровеит

Russian

Роуит

Alternative Name

Spanish

Roweita

CNMNC symbol

Symbol

Rwe