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Numanoite (Numanoit)

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Numanoit
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Numanoit
Bildbreite: 3 mm, Fundort: Fuka Mine, Bitchu-cho, Takahashi, Präfektur Okayama, Region Chugoku, Insel Honshu, Japan
Copyright: Luigi Chiappino; Contribution: thdun5
Location: Japan/Honshu/Chugoku, Region/Okayama, Präfektur/Takahashi/Bitchu (Bicchu)/Fuka Mine
Mineral: Numanoite
Image: 1296303390
License: Usage for Mineralienatlas project only
Numanoit

Bildbreite: 3 mm, Fundort: Fuka Mine, Bitchu-cho, Takahashi, Präfektur Okayama, Region Chugoku, Insel Honshu, Japan
Copyright: Luigi Chiappino
Contribution: thdun5 2011-01-29
Locality: Fuka Mine / Bitchu (Bicchu) / Takahashi / Okayama, Präfektur / Chugoku, Region / Honshu / Japan

Collectors Summary

Color bläulich-grün
Streak color weiß - blass blaugrün
Lustre Glasglanz
Hardness (Mohs) 4.5
Cleavages vollkommen in two directions
Solubility +++ unter aufbrausen in verdünnte HCl

Chemism

Chemical formula

Ca4CuB4O6(OH)6(CO3)2

Additional chem. information

Cu-dominiertes Analog von Borcarit

Chemical composition

Calcium, Kupfer, Bor, Kohlenstoff, Sauerstoff, Wasserstoff

Unit weight: 585.165682 u; Number of atoms in the formula: 35

Info

Empirical formula:

Ca4CuB4O6(OH)6(CO3)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

1.03

6

17.14

1.0079470

6.0476820
Boron

B

7.39

4

11.43

10.8117000

43.2468000
Carbon

C

4.11

2

5.71

12.0107800

24.0215600
Oxygen

O

49.22

18

51.43

15.9994300

287.9897400
Calcium

Ca

27.40

4

11.43

40.0784000

160.3136000
Copper

Cu

10.86

1

2.86

63.5463000

63.5463000

Analysis wt%

B2O3 : 24.09, CO2 : 15.80, CuO : 10.32, MgO : 1.02, ZnO : 0.51, CaO : 38.11, H2O : 9.75 (Ref: Canadian Mineralogist 2007)

Strunz 9th edition incl. updates

6.DA.40

6: Borate
D: Tetraborate
A: Insel(Neso)-Tetraborate
40:Borcarit-Gruppe

Lapis Classification

V/H.13-020

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

Classification by Hölzel

6.DA.210

6: Borates
D: Tetraborates
A: Nesotetraborates
2: Borcarite-Group - 4(4T)

IMA status

anerkannt 2005

Mineral status

anerkanntes Mineral

Optical Properties

Color

bläulich-grün

Streak color

weiß - blass blaugrün

Diaphaneity (Transparency)

semitransparent

Lustre

Glasglanz

max. Birefringence

0.054
Birefringence chart\! Numanoite title=Birefringence chart Numanoite

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

1.618

RI value β

1.658

RI value γ / ε

1.672

Ri mean

1.649

2V angle

Biaxial (-) 60°

Pleochroism

kein

Optical Data Luminescence

Luminescence

keine Fluoreszenz bekannt

Crystallography

Cell parameters a (Å)

17.794

Cell parameters b (Å)

8.381

Cell parameters c (Å)

4.449

Cell parameters a/b or c/a

2.123

Cell parameters c/b

0.531

Cell parameters α

90°

Cell parameters β

102.42

Cell parameters γ

90°

Z

2

Volumne (ų)

648.0

X-Ray Powder Diffraction

7.57(100), 2.899(44), 2.727(68), 2.671(84), 2.272(48), 2.201(28), 1.887(52), 1.698(34)
XRD chart Numanoite

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

Physical Properties

Hardness (Mohs)

4.5

VHN (Hardness Vickers)

376 (25g)

Density (g/cm³)

2.96

2.999 ( ρ calc. Mineralienatlas )

Cleavages

vollkommen in two directions

Instability

+++ unter aufbrausen in verdünnte HCl

Chemical Properties and Tests

leicht löslich in verd. Salzsäure unter Aufbrausen

(Co-)Type locality

(Co-)Type locality

Japan/Honshu/Chugoku, Region/Okayama, Präfektur/Takahashi/Bitchu (Bicchu)/Fuka Mine

Preface

Associations

Bultfonteinit, Borcarit, Calcit

Name from

Tadayuki Numano (Professor der Okayama-Universität, Japan)

References

Mineralien Welt 05/08, Steffen Jahn, Die neuen Mineralien 2007 - 2008

Other languages

German

Numanoit

English

Numanoite

Simplified Chinese

碳硼铜钙石

Alternative Name

Japanese

沼野石

CNMNC (IMA)-Number

IMA 2005-050

CNMNC symbol

Symbol

Num

Locations with GPS information