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Zincovoltaite (Cincovoltaíta)

Pictures (1 Images total)

Zinkovoltait
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Zinkovoltait
pseudowürfelige Kristalle von Zinkovoltait, Muzhijevo, Berehove, Berehivskyi, Zakarpattia, Ukraine; BB < 5 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: Ukraine/Transkarpatien, Oblast/Berehowe, Rajon/Berehowe/Muzhievo Goldlagerstätte
Mineral: Zincovoltaite
Image: 1591547651
Rating: 7 (votes: 1)
License: Usage for Mineralienatlas project only
Zinkovoltait

pseudowürfelige Kristalle von Zinkovoltait, Muzhijevo, Berehove, Berehivskyi, Zakarpattia, Ukraine; BB < 5 mm, analysiert

Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-06-07
Locality: Muzhievo Goldlagerstätte / Berehowe / Berehowe, Rajon / Transkarpatien, Oblast / Ukraine

Collectors Summary

Color grünlichschwarz
Streak color graugrün
Hardness (Mohs) 3
Solubility +++ HCl, ++ H2O, zersetzt sich langsam an der Luft
Crystal System kubisch, Fd3c

Chemism

Chemical formula

K2(Zn,Fe2+,Mn)5Fe33+Al(SO4)12·18H2O

Chemical composition

Aluminium, Eisen, Mangan, Zink, Kalium, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 2057.21325515 u; Number of atoms in the formula: 125

Info

Empirical formula:

K2(Zn0.6Fe0.3Mn0.1)5Fe3Al(SO4)12·18H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

1.76

36

28.80

1.0079470

36.2860920

Oxygen

O

51.33

66

52.80

15.9994300

1,055.9623800

Aluminium

Al

1.31

1

0.80

26.9815382

26.9815382

Sulfur

S

18.70

12

9.60

32.0655000

384.7860000

Potassium

K

3.80

2

1.60

39.0983100

78.1966200

Manganese

Mn

1.34

0.5

0.40

54.9380499

27.4690250

Iron

Fe

12.22

4.5

3.60

55.8452000

251.3034000

Zinc

Zn

9.54

3

2.40

65.4094000

196.2282000

Analysis wt%

K2O : 4.11, CaO : 0.69, ZnO : 14.61, FeO : 3.20, MnO : 1.20, Fe2O3 : 11.21, Al2O3 : 2.50, SO3 : 46.93, H2O : 15.69 (Ref: Acta Mineralogica Sinica 87)

Strunz 9th edition incl. updates

7.CC.25

7: Sulfate (Selenate, Tellurate, Chromate, Molybdate, Wolframate)
C: Sulfate (Selenate, etc.) ohne weitere Anionen, mit H2O
C: Mit mittelgroßen und großen [Kationen]
25:Voltait-Gruppe

Lapis Classification

VI/C.14-060

VI: SULFATE, CHROMATE, MOLYBDATE UND WOLFRAMATE
C: Wasserhaltige Sulfate, ohne fremde Anionen
14: Mittelgroße und sehr große Kationen

Classification by Hölzel

7.CD.610

7: SULFATES CHROMATES MOLYBDATES WOLFRAMATES
C: Sulfates (-Anions +Water)
D: Sulfates, C medium + large
6: Voltaite-Group

Dana 8th edition

29.09.01.02

29: Hydrated Acid and Sulfates
09: Hydrated Acid and Sulfates with miscellaneous formulae
01: Voltaite Group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Voltaite group

Optical Properties

Color

grünlichschwarz

Streak color

graugrün

RI value α / ω / n

1.605

Ri mean

1.605

2V angle

Isotropisch

Crystallography

Crystal System

kubisch

Class (H-M)

m3m

Space Group number

228

Space Group

Fd3c

Cell parameters a (Å)

27.180

Cell parameters b (Å)

-

Cell parameters c (Å)

-

Cell parameters a/b or c/a

1

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

16

Volume (ų)

20079.29

X-Ray Powder Diffraction

5.54(50),
4.26(30),
3.53(70),
3.39(100),
3.13(40),
3.03(30),
2.84(30)

XRD chart Zincovoltaite

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

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

3

VHN (Hardness Vickers)

83 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.756 (gemessen)

2.722 ( ρ calc. Mineralienatlas )

Instability

+++ HCl, ++ H2O, zersetzt sich langsam an der Luft

Preface

Author (Name, Year)

Li & Chen & Sun, 1987

References

Acta Mineralogica Sinica (in Chinese) 7 (1987), 307

IMA group assignments

Other languages

Spanish

Cincovoltaíta

German

Zincovoltait

English

Zincovoltaite

French

Zincovoltaite

Russian

Цинковольтаит

Japanese

亜鉛ボルタ石

Alternative Name

Italian

Zincovoltaita

German

Zinkovoltait

CNMNC (IMA)-Number

IMA 1985-059

CNMNC symbol

Symbol

Zvlt

Locations with GPS information

IDs

GUSID (Global unique identifier short form) WKub5k8Jh0KsnG6BE0PmUg
GUID (Global unique identifier) E69BAB58-094F-4287-AC9C-6E811343E652
Database ID 4285