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Nekrasovite

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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(Sn_0.6As_0.3Sb_0.1)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

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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 (Å³)	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)
	Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystals 3D

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Physical Properties

Hardness (Mohs)	4.75
VHN (Hardness Vickers)	312 (20g)
Density (g/cm³)	4.62
	4.591 ( ρ calc. Mineralienatlas )

(Co-)Type locality

Usbekistan /Toshkent (Tashkent), Provinz /Angren /Chatkal-Kuraminskii-Gebiet /Kairagach Gold-Lagerstätte

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 kubisch	2.CB.30
Maikainite	Cu₁₀Fe₃MoGe₃S₁₆ kubisch	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 tetragonal	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 kubisch	II/C.10-050
Ovamboite	Cu₁₀Fe₃WGe₃S₁₆ kubisch	II/C.10-055
Sulvanite	Cu₃VS₄ kubisch : 43m : P43m	II/C.10-060
Polkovicite	(Fe,Pb)₃(Ge,Fe)_1-xS₄ kubisch	II/C.10-070
Morozeviczite	(Pb,Fe)₃Ge_1-xS₄ kubisch	II/C.10-080

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

Haycockite	Cu₄Fe₅S₈ orthorhombisch	2.CB.500
Mooihoekite	Cu₉Fe₉S₁₆ tetragonal : 42m : P42m	2.CB.510
Talnakhite	Cu₉(Fe,Ni)₈S₁₆ kubisch : 43m : I43m	2.CB.520
Putoranite	Cu_1.1Fe_1.2S₂ 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 kubisch	2.CB.560
Ovamboite	Cu₁₀Fe₃WGe₃S₁₆ kubisch	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 kubisch	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 tetragonal	03.01.02.01
Lévyclaudite	Pb₈Sn₇Cu₃(Bi,Sb)₃S₂₈ monoklin	03.01.03.01
Cylindrite	Pb₃Sn₄FeSb₂S₁₄ triklin	03.01.04.01
Franckeite	Pb_21.7Sn_9.3Fe_4.0Sb_8.1S_56.9 triklin : 1 : C1	03.01.04.02
'Incaite' (Var.v. Franckeite)	(Pb,Ag)₄Sn₄FeSb₂S₁₅ monoklin	03.01.04.03
'Potosíite' (Var.v. Franckeite)	Pb₄₈Sn₁₈⁴⁺Fe₇²⁺Sb₁₆³⁺S₁₁₅ triklin	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 orthorhombisch	03.01.09.02

IMA Number

IMA 1983-051

Automatic Links to external internet sources (Responsibility is with the operator)

German pages	DeWikiPedia - search for: Nekrasovit Google-Bilder-Suche - search for: Nekrasovit Mineralogisch-Petrographisches-Institut Hamburg - search for: Nekrasovit
English pages	Mindat - search for: Nekrasovite Webmineral - search for:Nekrasovite Handbook-of-Mineralogy - search for: Nekrasovite RRUFF - Raman, XRD and other mineral data - search for: Nekrasovite RRUFF - References and PDF downloads - search for: Nekrasovite American-Mineralogist-Crystal-Structure-Database - search for: Nekrasovite Athena - search for: Nekrasovite
Russian pages	Webmineral.ru - search for: Некрасовит

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