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Aktashite

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Aktashit
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Aktashit

Bildbreite: 1 cm, Fundort: Moctezuma, Sonora, Mexiko

Copyright: Rob Lavinsky
Contribution: thdun5 2013-08-30
Locality: Moctezuma / Moctezuma, Municipio / Sonora / Mexiko

Collectors Summary

Color grauschwarz-met.
Streak color schwarz
Hardness (Mohs) 3.5
Solubility +++ HNO3 - andere Standardätzreagentien
Crystal System trigonal, R3

Chemism

Chem­ical formula

Cu6Hg3As4S12

Chem­ical com­po­si­tion

Arsen, Kupfer, Quecksilber, Schwefel

Unit weight: 1667.526208 u; Number of atoms in the formula: 25

Info

Empirical formula:

Cu6Hg3As4S12

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Sulfur

S

23.08

12

48.00

32.0655000

384.7860000

Copper

Cu

22.86

6

24.00

63.5463000

381.2778000

Arsenic

As

17.97

4

16.00

74.9216020

299.6864080

Mercury

Hg

36.09

3

12.00

200.5920000

601.7760000

Anal­y­sis wt%

Ø Hg : 32.54, Cu : 23.38, As : 18.20, Sb : 2.55, S : 23.80 (Ref: Izd.Nauk.Moscow,68)

Strunz 9th edi­tion incl. updates

2.GA.30

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
G: Sulfoarsenide, Sulfoantimonide, Sulfobismuthide
A: Insel(Neso)-Sulfarsenide, usw., ohne zusätzlichen Schwefel (S)
30:Nowackiit-Gruppe

Lapis Clas­sifica­tion

II/C.12-030

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

Clas­sifica­tion by Hölzel

2.FA.420

2: SULFIDES
F: Sulfarsenites, Sulfantimonites, Sulfbismuthinites Trigonal Pyramids ~[AsS3]3-, ~[SbS3]3-, ~[BiS3]3-
A: Neso Sulfarsenites without additional S
4: Nowackiite-Group

Dana 8th edi­tion

03.04.13.02

03: Sulfides - Sulfosalts
04: Sulfides - Sulfosalts where z/y > 3 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

IMA sta­tus

Ohne Prüfung durch die CNMNC veröffentlicht

Optical Properties

Color

grauschwarz-met.

Streak color

schwarz

Crystallography

Crystal Sys­tem

trigonal

Class (H-M)

3

Space Group number

146

Space Group

R3

Cell param­e­ters a (Å)

13.73

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

9.329

Cell param­e­ters a/b or c/a

0.679

Cell param­e­ters c/b

-

Z

3

Volumne (ų)

1523.024

X-Ray Pow­der Diffrac­tion

4.04(20),
3.10(100),
3.10(100),
2.69(70),
1.903(100),
1.621(100),
1.554(20),
1.345(30)

XRD chart Aktashite

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)

3.5

VHN (Hard­ness Vick­ers)

313 (50g)

Density (g/cm³)

5.71 (berechnet)

5.454 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+++ HNO3 - andere Standardätzreagentien

Preface

Author (Name, Year)

Vasil'ev, 1968

References

Transactions (Doklady) of the USSR Academy of Sciences, Earth Science Sections 206 (1972), 127

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

'Aktashite'

Cu6Hg3As4S12

trigonal : 3 : R3

2.GA.30

Gruzdevite

Cu6Hg3Sb4S12

trigonal : 3 : R3

2.GA.30

Nowackiite

Cu6Zn3As4S12

trigonal : 3 : R3

2.GA.30

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Watanabeite

Cu4(As,Sb)2S5

II/C.12-005

Sinnerite

Cu6As4S9

triklin : 1 : P1

II/C.12-010

Nowackiite

Cu6Zn3As4S12

trigonal : 3 : R3

II/C.12-020

'Aktashite'

Cu6Hg3As4S12

trigonal : 3 : R3

II/C.12-030

Gruzdevite

Cu6Hg3Sb4S12

trigonal : 3 : R3

II/C.12-040

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Nowackiite

Cu6Zn3As4S12

trigonal : 3 : R3

2.FA.400

'Aktashite'

Cu6Hg3As4S12

trigonal : 3 : R3

2.FA.420

Gruzdevite

Cu6Hg3Sb4S12

trigonal : 3 : R3

2.FA.440

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Christite

TlHgAsS3

monoklin : 2/m : P21/n

03.04.10.01

Laffittite

AgHgAsS3

monoklin : m : Aa

03.04.10.02

Routhierite

TlCu(Hg,Zn)2(As,Sb)2S6

03.04.11.01

Stalderite

TlCu(Zn,Fe,Hg)2As2S6

tetragonal : 42m : I42m

03.04.11.02

Quadratite

Ag(Cd,Pb)AsS3

tetragonal : 4/mmm : I41/amd

03.04.11.03

Samsonite

Ag4MnSb2S6

monoklin : 2/m : P21/n

03.04.12.01

Nowackiite

Cu6Zn3As4S12

trigonal : 3 : R3

03.04.13.01

'Aktashite'

Cu6Hg3As4S12

trigonal : 3 : R3

03.04.13.02

Gruzdevite

Cu6Hg3Sb4S12

trigonal : 3 : R3

03.04.13.03

Galkhaite

(Hg5Cu)CsAs4S12

kubisch : 43m : I43m

03.04.14.01

Lillianite

Pb3Bi2S6

orthorhombisch : mmm : Bbmm

03.04.15.01

Gustavite

PbAgBi3S6

monoklin : 2/m : P21/c

03.04.15.03

Uchucchacuaite

AgPb3MnSb5S12

monoklin : 2/m : P21/n

03.04.15.05

Roshchinite

Ag19Pb10Sb51S96

orthorhombisch : mmm : Pmna

03.04.15.07

Fizélyite

Pb14Ag5Sb21S48

monoklin : 2/m : P21/n

03.04.15.08

Xilingolite

Pb3Bi2S6

monoklin : 2/m : C2/m

03.04.16.01

Kirkiite

Pb10Bi3As3S19

monoklin : 2/m : P21/m

03.04.17.01

Erniggliite

Tl2SnAs2S6

trigonal : 3 : P3

03.04.18.01

CNMNC symbol

Symbol

Ats

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