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Nekrasovite

Collectors Summary

Color rötlichbraun
Hardness (Mohs) 4.75
Crystal System kubisch, P43n

Chemism

Chem­ical formula

Cu13V(Sn,As,Sb)3S16

Chem­ical com­po­si­tion

Antimon, Arsen, Kupfer, Zinn, Schwefel, Vanadium

Unit weight: 1707.7281418 u; Number of atoms in the formula: 33

Info

Empirical formula:

Cu13V(Sn0.6As0.3Sb0.1)3S16

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Sulfur

S

30.04

16

48.48

32.0655000

513.0480000

Vanadium

V

2.98

1

3.03

50.9415100

50.9415100

Copper

Cu

48.37

13

39.39

63.5463000

826.1019000

Arsenic

As

3.95

0.9

2.73

74.9216020

67.4294418

Tin

Sn

12.51

1.8

5.45

118.7107000

213.6792600

Antimony

Sb

2.14

0.3

0.91

121.7601000

36.5280300

Anal­y­sis wt%

Cu : 44.18, Fe : 4.11, V : 1.93, Sn : 11.40, As : 3.03, Sb : 4.20, S : 29.86 (Ref: Mineralogicheskii Zhurnal 84)

Strunz 9th edi­tion incl. updates

2.CB.30

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.
30:Germanit-Gruppe

Lapis Clas­sifica­tion

II/C.10-030

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

Clas­sifica­tion by Hölzel

2.CB.545

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
5: Germanite-Colusite-Mawsonite-Group

Dana 8th edi­tion

03.01.01.03

03: Sulfides - Sulfosalts
01: Sulfides - Sulfosalts where z/y > 4 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
01: Colusite Group (Isometric: P-43n) with Cu and V

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

rötlichbraun

Diaphane­ity (Trans­parency)

opak

Crystallography

Crystal Sys­tem

kubisch

Class (H-M)

43m

Space Group number

218

Space Group

P43n

Cell param­e­ters a (Å)

10.73

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

2

Volumne (ų)

1235.376

X-Ray Pow­der Diffrac­tion

3.41(10),
3.09(100),
2.68(20),
1.894(80),
1.617(60),
1.230(50),
1.096(30),
1.033(30)

XRD chart Nekrasovite

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

Crystals 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

4.75

VHN (Hard­ness Vick­ers)

312 (20g)

Density (g/cm³)

4.62

4.591 ( ρ calc. Mineralienatlas )

Preface

Author (Name, Year)

Kovalenker & Evstigneeva & Malov & Trubkin & Gorshkov & Geinke, 1984

References

Mineralogicheskiy Zhurnal 6 (1984) (2), 88

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

Colusite

Cu12VAs3S16

kubisch : 43m : P43n

2.CB.30

Germanite

Cu13Fe2Ge2S16

kubisch : 43m : P43n

2.CB.30

Ovamboite

Cu10Fe3WGe3S16

2.CB.30

Maikainite

Cu10Fe3MoGe3S16

2.CB.30

Nekrasovite

Cu13V(Sn,As,Sb)3S16

kubisch : 43m : P43n

2.CB.30

Stibiocolusite

Cu13V(Sb,As,Sn)3S16

kubisch : 43m : P43m

2.CB.30

Germanocolusite

Cu13V(Ge,As)3S16

kubisch : 43m : P43m

2.CB.30

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

Renierite

(Cu,Zn)11(Ge,As)2Fe4S16

tetragonal : 42m : P42c

II/C.10-010

Vinciennite

Cu10Fe4Sn(As,Sb)S16

II/C.10-015

Germanite

Cu13Fe2Ge2S16

kubisch : 43m : P43n

II/C.10-020

Nekrasovite

Cu13V(Sn,As,Sb)3S16

kubisch : 43m : P43n

II/C.10-030

Colusite

Cu12VAs3S16

kubisch : 43m : P43n

II/C.10-040

Stibiocolusite

Cu13V(Sb,As,Sn)3S16

kubisch : 43m : P43m

II/C.10-045

Germanocolusite

Cu13V(Ge,As)3S16

kubisch : 43m : P43m

II/C.10-047

Maikainite

Cu10Fe3MoGe3S16

II/C.10-050

Ovamboite

Cu10Fe3WGe3S16

II/C.10-055

Sulvanite

Cu3VS4

kubisch : 43m : P43m

II/C.10-060

Polkovicite

(Fe,Pb)3(Ge,Fe)1-xS4

II/C.10-070

Morozeviczite

(Pb,Fe)3Ge1-xS4

II/C.10-080

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

Haycockite

Cu4Fe5S8

2.CB.500

Mooihoekite

Cu9Fe9S16

tetragonal : 42m : P42m

2.CB.510

Talnakhite

Cu9(Fe,Ni)8S16

kubisch : 43m : I43m

2.CB.520

Putoranite

Cu1.1Fe1.2S2

kubisch : m3m

2.CB.525

Colusite

Cu12VAs3S16

kubisch : 43m : P43n

2.CB.530

Stibiocolusite

Cu13V(Sb,As,Sn)3S16

kubisch : 43m : P43m

2.CB.535

Germanocolusite

Cu13V(Ge,As)3S16

kubisch : 43m : P43m

2.CB.540

Nekrasovite

Cu13V(Sn,As,Sb)3S16

kubisch : 43m : P43n

2.CB.545

Renierite

(Cu,Zn)11(Ge,As)2Fe4S16

tetragonal : 42m : P42c

2.CB.550

Germanite

Cu13Fe2Ge2S16

kubisch : 43m : P43n

2.CB.555

Maikainite

Cu10Fe3MoGe3S16

2.CB.560

Ovamboite

Cu10Fe3WGe3S16

2.CB.565

Mawsonite

Cu61+Fe23+Sn4+S8

tetragonal : 42m : P4m2

2.CB.570

Chatkalite

Cu6Fe2+Sn2S8

tetragonal : 42m : P4m2

2.CB.575

Chaméanite

(Cu,Fe)4As(Se,S)4

2.CB.590

Lautite

CuAsS

orthorhombisch : mm2 : Pna21

2.CB.595

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

Colusite

Cu12VAs3S16

kubisch : 43m : P43n

03.01.01.01

Germanocolusite

Cu13V(Ge,As)3S16

kubisch : 43m : P43m

03.01.01.02

Nekrasovite

Cu13V(Sn,As,Sb)3S16

kubisch : 43m : P43n

03.01.01.03

Stibiocolusite

Cu13V(Sb,As,Sn)3S16

kubisch : 43m : P43m

03.01.01.04

Vinciennite

Cu10Fe4Sn(As,Sb)S16

03.01.02.01

Lévyclaudite

Pb8Sn7Cu3(Bi,Sb)3S28

03.01.03.01

Cylindrite

Pb3Sn4FeSb2S14

03.01.04.01

Franckeite

Pb21.7Sn9.3Fe4.0Sb8.1S56.9

triklin : 1 : C1

03.01.04.02

'Incaite' (Var.v. Franckeite)

(Pb,Ag)4Sn4FeSb2S15

03.01.04.03

'Potosíite' (Var.v. Franckeite)

Pb48Sn184+Fe72+Sb163+S115

03.01.04.04

Miharaite

PbCu4FeBiS6

orthorhombisch : mm2 : Pb21m

03.01.05.01

Billingsleyite

Ag7(As,Sb)S6

kubisch : 23 : P213

03.01.06.01

'Pearceite-T2ac' (Pol.v. Pearceite-Tac)

[Ag9CuS4][(Ag,Cu)6(As,Sb)2S7]

trigonal : 32 : P321

03.01.07.01

Polybasite

(Ag,Cu)16Sb2S11

03.01.07.02

Cupropolybasite

[Cu6Sb2S7][Ag9CuS4]

trigonal : 3m : P3m1

03.01.07.03

Pearceite-Tac

[Ag9CuS4][(Ag,Cu)6(As,Sb)2S7]

trigonal : 3m : P3m1

03.01.08.01

'Polybasite-Tac' (Pol.v. Polybasite)

[Ag9CuS4][(Ag,Cu)6(Sb,As)2S7]

trigonal : 3m : P3m1

03.01.08.02

Petrovicite

PbHgCu3BiSe5

orthorhombisch : mmm, mm2 : Pnam, Pna21

03.01.09.01

Mazzettiite

Ag3HgPbSbTe5

03.01.09.02

IMA Number

IMA 1983-051

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