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Tokyoite

Pictures (12 Images total)

Tokyoit
Views (File:
1221160224
): 996
Tokyoit
Bildbreite: 2 mm; Fundort: Miniera Valgraveglia (Miniera Gambatesa), Reppia, Val Graveglia, Ne, Genova, Ligurien (Liguria), Italien
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Italien/Ligurien (Liguria), Region/Genua (Genova), Metropolitanstadt/Ne/Val Graveglia/Reppia/Miniera Gambatesa
Mineral: Tokyoite
Image: 1221160224
Rating: 7.5 (votes: 2)
License: Usage for Mineralienatlas project only
Tokyoit

Bildbreite: 2 mm; Fundort: Miniera Valgraveglia (Miniera Gambatesa), Reppia, Val Graveglia, Ne, Genova, Ligurien (Liguria), Italien
Copyright: Stephan Wolfsried
Contribution: Hg 2008-09-11
Locality: Miniera Gambatesa / Reppia / Val Graveglia / Ne / Genua (Genova), Metropolitanstadt / Ligurien (Liguria), Region / Italien
Tokyoit
Views (File:
1221160167
): 945, Rating: 6.5
Tokyoit
Bildbreite: 2 mm; Fundort: Miniera Valgraveglia (Miniera Gambatesa), Reppia, Val Graveglia, Ne, Genova, Ligurien (Liguria), Italien
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Italien/Ligurien (Liguria), Region/Genua (Genova), Metropolitanstadt/Ne/Val Graveglia/Reppia/Miniera Gambatesa
Mineral: Tokyoite
Image: 1221160167
Rating: 6.5 (votes: 4)
License: Usage for Mineralienatlas project only
Tokyoit

Bildbreite: 2 mm; Fundort: Miniera Valgraveglia (Miniera Gambatesa), Reppia, Val Graveglia, Ne, Genova, Ligurien (Liguria), Italien
Copyright: Stephan Wolfsried
Contribution: Hg 2008-09-11
Locality: Miniera Gambatesa / Reppia / Val Graveglia / Ne / Genua (Genova), Metropolitanstadt / Ligurien (Liguria), Region / Italien
Tokyoit
Views (File:
1222158254
): 905
Tokyoit
Bildbreite: 1 mm; Fundort: Miniera Valgraveglia (Miniera Gambatesa), Reppia, Val Graveglia, Ne, Genova, Ligurien (Liguria), Italien
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Italien/Ligurien (Liguria), Region/Genua (Genova), Metropolitanstadt/Ne/Val Graveglia/Reppia/Miniera Gambatesa
Mineral: Tokyoite
Image: 1222158254
Rating: 6 (votes: 1)
License: Usage for Mineralienatlas project only
Tokyoit

Bildbreite: 1 mm; Fundort: Miniera Valgraveglia (Miniera Gambatesa), Reppia, Val Graveglia, Ne, Genova, Ligurien (Liguria), Italien
Copyright: Stephan Wolfsried
Contribution: Hg 2008-09-23
Locality: Miniera Gambatesa / Reppia / Val Graveglia / Ne / Genua (Genova), Metropolitanstadt / Ligurien (Liguria), Region / Italien
Tokyoit
Views (File:
1167331931
): 870
Tokyoit
Bildbreite: 1 mm; Fundort: Gambatesa Mine, Genua, Ligurien, Italien
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Italien/Ligurien (Liguria), Region/Genua (Genova), Metropolitanstadt/Ne/Val Graveglia/Reppia/Miniera Gambatesa
Mineral: Tokyoite
Image: 1167331931
License: Usage for Mineralienatlas project only
Tokyoit

Bildbreite: 1 mm; Fundort: Gambatesa Mine, Genua, Ligurien, Italien
Copyright: Stephan Wolfsried
Contribution: Hg 2006-12-28
Locality: Miniera Gambatesa / Reppia / Val Graveglia / Ne / Genua (Genova), Metropolitanstadt / Ligurien (Liguria), Region / Italien
Tokyoit
Views (File:
1581177288
): 269
Tokyoit
Gambatesa Mine Val Graveglia; Bildbreite 1,0 mm
Copyright: Ulrich Hansper; Contribution: Ulrich Hansper
Collection: Ulrich Hansper
Location: Italien/Ligurien (Liguria), Region/Genua (Genova), Metropolitanstadt/Ne/Val Graveglia/Reppia/Miniera Gambatesa
Mineral: Tokyoite
Image: 1581177288
License: Usage for Mineralienatlas project only
Tokyoit

Gambatesa Mine Val Graveglia; Bildbreite 1,0 mm
Collection: Ulrich Hansper
Copyright: Ulrich Hansper
Contribution: Ulrich Hansper 2020-02-08
Locality: Miniera Gambatesa / Reppia / Val Graveglia / Ne / Genua (Genova), Metropolitanstadt / Ligurien (Liguria), Region / Italien

Collectors Summary

Color schwarzrot
Streak color bräunlichrot
Lustre Glasglanz
Hardness (Mohs) 4 - 4.5
Cleavages keine
Crystal System monoklin, P21/m

Chemism

Chemical formula

Ba2Mn(VO4)2(OH)

Additional chem. information

Mn-dominantes Analog von Gamagarit

Chemical composition

Barium, Mangan, Sauerstoff, Vanadium, Wasserstoff

Unit weight: 576.4792869 u; Number of atoms in the formula: 15

Info

Empirical formula:

Ba2Mn(VO4)2(OH)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.17

1

6.67

1.0079470

1.0079470
Oxygen

O

24.98

9

60.00

15.9994300

143.9948700
Vanadium

V

17.67

2

13.33

50.9415100

101.8830200
Manganese

Mn

9.53

1

6.67

54.9380499

54.9380499
Barium

Ba

47.64

2

13.33

137.3277000

274.6554000

Analysis wt%

V2O5 : 31.77, Fe2O3 : 2.33, Mn2O3 : 11.27, BaO : 51.91, H2O : 1.59 (Ref: J.Min.Petr.Sci.2004)

Strunz 9th edition incl. updates

8.BG.05

8: Phosphate, Arsenate, Vanadate
B: Phosphate, etc., mit weitere Anionen, ohne H2O
G: Mit mittelgroßen und großen [Kationen] (OH, etc.):RO4 = 0.5:1
05:Brackebuschit-Gruppe

Lapis Classification

VII/B.24-022

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
B: Wasserfreie Phosphate, mit fremden Anionen F,Cl,O,OH
24: Mittelgroße und große Kationen: Mg-Cu-Zn und Ca-Na-K-Ba-Pb; Brackebuschit- Gruppe

Classification by Hölzel

8.BM.335

8: PHOSPHATES ARSENATES VANADATES
B: Phosphates (+Anions -Water)
M: Phosphates, very large: 2, Vmed: 2,3
3: Bearthite-Brackebuschite-Group

Dana 8th edition

41.10.04.04

41: Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
10: Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen where (A++ B++)3 (XO4)2 Zq
04: Goedkenite Group

IMA status

anerkannt 2003

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Brackebuschite supergroup  ⇒ Brackebuschite group

Optical Properties

Color

schwarzrot

Streak color

bräunlichrot

Diaphaneity (Transparency)

durchscheinend

Lustre

Glasglanz

RI value α / ω / n

2.03

RI value β

by

RI value γ / ε

GlDale

Ri mean

2.03

2V angle

Biaxial

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

11

Space Group

P21/m

Cell parameters a (Å)

9.10

Cell parameters b (Å)

6.13

Cell parameters c (Å)

7.89

Cell parameters a/b or c/a

1.485

Cell parameters c/b

1.287

Cell parameters α

90°

Cell parameters β

112.20

Cell parameters γ

90°

Z

2

Volume (ų)

407.501

X-Ray Powder Diffraction

3.46(26), 3.31(100), 3.00(16), 2.90(19), 2.80(62), 2.71(40), 2.16(18)
XRD chart Tokyoite

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

Physical Properties

Hardness (Mohs)

4 - 4.5

VHN (Hardness Vickers)

377 (25g)

Density (g/cm³)

4.62

4.698 ( ρ calc. Mineralienatlas )

Cleavages

keine

Radioactivity

keine

(Co-)Type locality

(Co-)Type locality

Japan/Honshū (Honschu), Insel/Kanto, Region/Tokio, Präfektur/Nishitama, Landkreis/Okutama/Shiromaru Mine

Preface

Rareness

äußerst selten

Author (Name, Year)

Matsubara & Miyawaki & Yokoyama & Shimizu & Imai, 2004

References

Journal of Mineralogical and Petrological Sciences (formerly Mineralogical Journal) 99 (2004), 363

IMA group assignments

Other languages

German

Tokyoit

French

Tokyoite

English

Tokyoite

Spanish

Tokyoíta

Simplified Chinese

东京石

Alternative Name

Japanese

東京石

CNMNC (IMA)-Number

IMA 2003-036

CNMNC symbol

Symbol

Tky

Locations with GPS information

IDs

GUSID (Global unique identifier short form) vTA7VrgzMUqflFmwjNx7Bg
GUID (Global unique identifier) 563B30BD-33B8-4A31-9F94-59B08CDC7B06
Database ID 3872