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Velikite

Pictures (1 Images total)

Velikit mit Kësterit-Gruppe
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1637789268
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Velikit mit Kësterit-Gruppe
Anschliff von gräulichem Velikit als Rand um gelbliche Kësterit-Gruppen-Minerale (Kësterit und Zinkobriartit), Tsumeb Mine, Namibia; BB ~ 1 mm, analysiert mit REM-EDX und RAMAN-Spektroskopie
Copyright: Joy Desor; Contribution: openpit
Location: Namibia/Oshikoto (Otjikoto), Region/Tsumeb/Tsumeb Mine
Mineral: Velikite
Image: 1637789268
License: Usage for Mineralienatlas project only
Velikit mit Kësterit-Gruppe  E
Analysed with energy dispersive X-ray spectroscopy EDX
R
Analysed with RAMAN spectroscopy

Anschliff von gräulichem Velikit als Rand um gelbliche Kësterit-Gruppen-Minerale (Kësterit und Zinkobriartit), Tsumeb Mine, Namibia; BB 1 mm, analysiert mit REM-EDX und RAMAN-Spektroskopie
Copyright: Joy Desor
Contribution: openpit 2021-11-24
Locality: Tsumeb Mine / Tsumeb / Oshikoto (Otjikoto), Region / Namibia

Collectors Summary

Color grünlich grau zu hellgrau mit grünlich-bräunlichen Farbton
Streak color grau
Hardness (Mohs) 4.5
Cleavages keine
Fracture uneben
Crystal System tetragonal, I4

Chemism

Chemical formula

Cu2(Hg,Zn)SnS4

Chemical composition

Kupfer, Quecksilber, Zink, Zinn, Schwefel

Unit weight: 540.86165 u; Number of atoms in the formula: 8

Info

Empirical formula:

Cu2(Hg0.75Zn0.25)SnS4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Sulfur

S

23.71

4

50.00

32.0655000

128.2620000
Copper

Cu

23.50

2

25.00

63.5463000

127.0926000
Zinc

Zn

3.02

0.25

3.13

65.4094000

16.3523500
Tin

Sn

21.95

1

12.50

118.7107000

118.7107000
Mercury

Hg

27.82

0.75

9.38

200.5920000

150.4440000

Analysis wt%

Ø Cu : 23.16, Hg : 29.49, Zn : 2.49, Sn : 17.60, Ge : 1.31, S : 24.78 (Ref: Doklady Akademiia Nauk, SSSR 88)

Strunz 9th edition incl. updates

2.CB.15

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
C: Metallsulfide, M : S = 1 : 1 (und ähnliche)
B: mit Zink (Zn), Eisen (Fe), Kupfer (Cu), Silber (Ag), usw.
15:Stannit-Gruppe

Lapis Classification

II/C.06-100

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
C: Sulfide mit Metall : S,Se,Te ~ 1:1
6: Stannit-Gruppe

Classification by Hölzel

2.CB.340

2: SULFIDES
C: Sulfides (etc) with Me/S=1/1
B: With Zn,Cu (etc), Coordination Number ~[4] Framework of Cornersharing Tetrahedra: Sphalerite-Germanite-Family
3: Stannite-Group

Dana 8th edition

02.09.02.08

02: Sulfide Minerals
09: Sulfides - Including Selenides and Tellurides where Am Bn Xp, with (m+n):p=1:1
02: Stannite Group (Tetragonal: I-42m) A2BCS type

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Stannite group

Optical Properties

Color

grünlich grau zu hellgrau mit grünlich-bräunlichen Farbton

Streak color

grau

Diaphaneity (Transparency)

opak

Crystallography

Crystal System

tetragonal

Class (H-M)

4

Space Group number

82

Space Group

I4

Cell parameters a (Å)

5.554

Cell parameters b (Å)

-

Cell parameters c (Å)

10.911

Cell parameters a/b or c/a

1.965

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

2

Volumne (ų)

336.571

X-Ray Powder Diffraction

5.37(10),
3.17(100),
1.958(20),
1.941(80),
1.671(40),
1.646(30),
1.264(20),
1.132(20)
XRD chart Velikite

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)

4.5

VHN (Hardness Vickers)

270 (30g)

Density (g/cm³)

5.45

5.337 ( ρ calc. Mineralienatlas )

Cleavages

keine

Fracture

uneben

Tenacity

spröde

(Co-)Type locality

(Co-)Type locality

Kirgistan/Batken, Oblast/Kadamdschai, Bezirk/Hg-Sb-Lagerstätten/Khaidarkan (Aidarken; Chaidarkan; Khaydarkan)

Type material

Kyrgystan - Khaidarkan Sb-Hg-deposit (N39 58', E71 15')
-Russia: FMM-Moscow - Type: T: 83006
-Russia: MM-St.Petersburg - Type: T: 2097/1

Preface

Author (Name, Year)

Kaplunnik & Pobedimskaya & Belov, 1977

References

Strunz Mineralogical Tables 9. Edition

Mineralogical Record: 29: 478.

Neues Jahrbuch für Mineralogie, Abhandlungen: 144: 307-309.

Kaplunnik LN, Pobedimskaya EA, Belov NV: Kristallografiya,(1977) 22, 175-177

IMA group assignments

 
Stannite group
A2DEX4
 
 

 
 
Briartite
Cu2(Zn,Fe)GeS4
tetragonal
I42m

 
 
Černýite
Cu2CdSnS4
tetragonal
I42m

 
 
Famatinite
Cu3SbS4
tetragonal
I42m

 
 
Ferrokësterite
Cu2FeSnS4
tetragonal
I4

 
 
Hocartite
Ag2FeSnS4
tetragonal
I42m

 
 
Kësterite
Cu2(Zn,Fe)SnS4
tetragonal
I4

 
 
Keutschite
Cu2AgAsS4
tetragonal
I42m

 
 
Kuramite
Cu3SnS4
tetragonal
I42m

 
 
Luzonite
Cu3AsS4
tetragonal
I42m

 
 
Omariniite
Cu8Fe2ZnGe2S12
orthorhombisch
I222

 
 
Permingeatite
Cu3SbSe4
tetragonal
I42m

 
 
Petrukite
(Cu,Ag)2(Fe,Zn)(Sn,In)S4
orthorhombisch
Pmn21

 
 
Pirquitasite
Ag2ZnSnS4
tetragonal
I42m, I4

 
 
Richardsite
Zn2CuGaS4
tetragonal
I42m

 
 
Stannite
Cu2FeSnS4
tetragonal
I42m

 
 
Stannoidite
Cu8(Fe,Zn)3Sn2S12
orthorhombisch
I222

 
 
UM1984-30-S:CuFeSn
 
 
 

 
 
Velikite
Cu2(Hg,Zn)SnS4
tetragonal
I4

 
 
Zincobriartite
Cu2(Zn,Fe)(Ge,Ga)S4
tetragonal
I42m

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Actuality: 10. Aug 2022 - 05:06:30

Other languages

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English

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French

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Russian

Великит

Japanese

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CNMNC (IMA)-Number

IMA 1996-052

CNMNC symbol

Symbol

Vel

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