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Černýite

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Černýite, Stannite
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Černýite, Stannite

Grain of cernyite-stannite in chalcopyrite. The cernyite occurs as small, <200 micron grains, in the stannite. FOV 1mm. Brent Thorne specimen and photograph; Locality: Tanco Mine, Bernic Lake, Lac-...

Copyright: Brent Thorne
Contribution: Stefan 2016-11-25
Locality: Tanco-Pegmatit / Bernic-See / Lac-du-Bonnet-Gebiet / Manitoba / Kanada

Collectors Summary

Color stahlgrau-metallisch
Streak color schwarz
Lustre Metallglanz
Hardness (Mohs) 4
Solubility ++ HNO3 1:1
Crystal System tetragonal, I42m

Additional information / Summary

Cernyit / Černýite

Chemism

Chem­ical formula

Cu2CdSnS4

Chem­ical com­po­si­tion

Cadmium, Kupfer, Zinn, Schwefel

Unit weight: 486.4771 u; Number of atoms in the formula: 8

Info

Empirical formula:

Cu2CdSnS4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Sulfur

S

26.37

4

50.00

32.0655000

128.2620000

Copper

Cu

26.13

2

25.00

63.5463000

127.0926000

Cadmium

Cd

23.11

1

12.50

112.4118000

112.4118000

Tin

Sn

24.40

1

12.50

118.7107000

118.7107000

Anal­y­sis wt%

Cu : 28.10, Fe : 3.60, Zn : 4.90, Cd : 9.30, Sn : 26.30, S : 28.50 (Ref: Canadian Mineralogist 87)

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.06-090

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.320

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

Hey's Chem­ical Index of Min­er­als

06.01.13

06: Sulphosalts - Sulphostannates, Sulphogermanates,Sulpharsenates, Sulphantimonates, Sulphovanadates and Sulphohalides
01: Sulphostannates and other sulfides containing Sn

Dana 8th edi­tion

02.09.02.02

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

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Stannite group

Optical Properties

Color

stahlgrau-metallisch

Streak color

schwarz

Change in color

mittelgrau in reflektiertem Licht

Lus­tre

Metallglanz

Pleochro­ism

unmerklich

Anisotropism

Sehr schwach in Grautönen

Reflec­tiv­ity: (Lambda nm) ↓, ↑, Ø

(470) 24.6, 25.5, 25.1
(546) 23.4, 25.6, 24.5
(589) 22.3, 25.0, 23.7
(650) 22.7, 24.3, 23.5

Reflection chart Černýite

Reflec­tiv­ity Ø

24.18

Crystallography

Crystal Sys­tem

tetragonal

Class (H-M)

42m

Space Group number

121

Space Group

I42m

Cell param­e­ters a (Å)

5.51

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

10.84

Cell param­e­ters a/b or c/a

1.967

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

329.103

X-Ray Pow­der Diffrac­tion

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

4

VHN (Hard­ness Vick­ers)

200 (50g)

Density (g/cm³)

4.70 (berechnet)

4.909 ( ρ calc. Mineralienatlas )

Insta­bil­ity

++ HNO3 1:1

(Co-)Type locality

(Co-)Type locality

USA/South Dakota/Pennington Co./Keystone District/Keystone/Hugo Mine

Kanada/Manitoba/Lac-du-Bonnet-Gebiet/Bernic-See/Tanco-Pegmatit

Type mate­r­ial

University of Manitoba, Winnepeg, Kanada

Canadian Geological Survey, Ottawa, Kanada

Royal Ontario Museum, Toronto, Kanada

Museum of Geology, South Dakota School of Mines, USA

National Museum of Natural History, Washington, D.C., USA

Col­lec­tion number of type mate­r­ial

5159, 5160 (Winnepeg); 12119 (Ottawa); M34728–M34730 (Toronto); 5098, 5099 (South Dakota); 136924 (W

Preface

Name from

Dr. Petr Černý (1934- ), Tschechisch-Kanadischer Mineraloge, spezialisiert auf Pegmatite, Universität von Manitoba, Winnipeg, Kanada.

Author (Name, Year)

Kissin et al., 1978

References

Strunz Mineralogical Tables 9. Edition

American Mineralogist: 64: 653.

IMA group assignments

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

Idaite

Cu3FeS4

tetragonal : 42m : I42m

2.CB.15

Mohite

Cu2SnS3

monoklin : m : Cc

2.CB.15

Černýite

Cu2CdSnS4

tetragonal : 42m : I42m

2.CB.15

Kuramite

Cu3SnS4

tetragonal : 42m : I42m

2.CB.15

Stannite

Cu2FeSnS4

tetragonal : 42m : I42m

2.CB.15

Velikite

Cu2(Hg,Zn)SnS4

tetragonal : 4 : I4

2.CB.15

Hocartite

Ag2FeSnS4

tetragonal : 42m : I42m

2.CB.15

Keutschite

Cu2AgAsS4

tetragonal : 42m : I42m

2.CB.15

Kësterite

Cu2(Zn,Fe)SnS4

tetragonal : 4 : I4

2.CB.15

Stannoidite

Cu8(Fe,Zn)3Sn2S12

orthorhombisch : 222 : I222

2.CB.15

Pirquitasite

Ag2ZnSnS4

tetragonal : 42m, 4 : I42m, I4

2.CB.15

Ferrokësterite

Cu2FeSnS4

tetragonal : 4 : I4

2.CB.15

Richardsite

Zn2CuGaS4

tetragonal : 42m : I42m

2.CB.15

Omariniite

Cu8Fe2ZnGe2S12

orthorhombisch : 222 : I222

2.CB.15c

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

Luzonite

Cu3AsS4

tetragonal : 42m : I42m

II/C.06-010

Famatinite

Cu3SbS4

tetragonal : 42m : I42m

II/C.06-020

Permingeatite

Cu3SbSe4

tetragonal : 42m : I42m

II/C.06-030

Briartite

Cu2(Zn,Fe)GeS4

tetragonal : 42m : I42m

II/C.06-040

Barquillite

Cu2(Cd,Fe)GeS4

tetragonal : 42m : I42m

II/C.06-045

Kuramite

Cu3SnS4

tetragonal : 42m : I42m

II/C.06-050

Stannite

Cu2FeSnS4

tetragonal : 42m : I42m

II/C.06-060

Ferrokësterite

Cu2FeSnS4

tetragonal : 4 : I4

II/C.06-070

Kësterite

Cu2(Zn,Fe)SnS4

tetragonal : 4 : I4

II/C.06-080

Černýite

Cu2CdSnS4

tetragonal : 42m : I42m

II/C.06-090

Velikite

Cu2(Hg,Zn)SnS4

tetragonal : 4 : I4

II/C.06-100

Hocartite

Ag2FeSnS4

tetragonal : 42m : I42m

II/C.06-110

Pirquitasite

Ag2ZnSnS4

tetragonal : 42m, 4 : I42m, I4

II/C.06-120

Richardsite

Zn2CuGaS4

tetragonal : 42m : I42m

II/C.06-125

Sakuraiite

(Cu,Zn,Fe)3(In,Sn)S4

II/C.06-130

Petrukite

(Cu,Ag)2(Fe,Zn)(Sn,In)S4

orthorhombisch : mm2 : Pmn21

II/C.06-140

Rhodostannite

(Cu,Ag)2FeSn3S8

tetragonal : 4/m : I41/a

II/C.06-150

Toyohaite

Ag2FeSn3S8

tetragonal : 4/m : I41/a

II/C.06-160

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

'Plumbostannite'

Pb2Fe2Sn2Sb2S11

2.CB.3

Stannite

Cu2FeSnS4

tetragonal : 42m : I42m

2.CB.300

Kuramite

Cu3SnS4

tetragonal : 42m : I42m

2.CB.310

Černýite

Cu2CdSnS4

tetragonal : 42m : I42m

2.CB.320

Velikite

Cu2(Hg,Zn)SnS4

tetragonal : 4 : I4

2.CB.340

Hocartite

Ag2FeSnS4

tetragonal : 42m : I42m

2.CB.350

Pirquitasite

Ag2ZnSnS4

tetragonal : 42m, 4 : I42m, I4

2.CB.360

Kësterite

Cu2(Zn,Fe)SnS4

tetragonal : 4 : I4

2.CB.370

Ferrokësterite

Cu2FeSnS4

tetragonal : 4 : I4

2.CB.375

Stannoidite

Cu8(Fe,Zn)3Sn2S12

orthorhombisch : 222 : I222

2.CB.390

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

Chalcopyrite

CuFeS2

tetragonal : 42m : I42d

02.09.01.01

Eskebornite

CuFeSe2

tetragonal : 42m : P42c

02.09.01.02

Gallite

CuGaS2

tetragonal : 42m : I42d

02.09.01.03

Roquesite

CuInS2

tetragonal : 42m : I42d

02.09.01.04

Lenaite

AgFeS2

tetragonal : 42m : I42d

02.09.01.05

Laforêtite

AgInS2

tetragonal : 42m : I42d

02.09.01.06

Stannite

Cu2FeSnS4

tetragonal : 42m : I42m

02.09.02.01

Černýite

Cu2CdSnS4

tetragonal : 42m : I42m

02.09.02.02

Briartite

Cu2(Zn,Fe)GeS4

tetragonal : 42m : I42m

02.09.02.03

Kuramite

Cu3SnS4

tetragonal : 42m : I42m

02.09.02.04

Sakuraiite

(Cu,Zn,Fe)3(In,Sn)S4

02.09.02.05

Hocartite

Ag2FeSnS4

tetragonal : 42m : I42m

02.09.02.06

Pirquitasite

Ag2ZnSnS4

tetragonal : 42m, 4 : I42m, I4

02.09.02.07

Velikite

Cu2(Hg,Zn)SnS4

tetragonal : 4 : I4

02.09.02.08

Kësterite

Cu2(Zn,Fe)SnS4

tetragonal : 4 : I4

02.09.02.09

Ferrokësterite

Cu2FeSnS4

tetragonal : 4 : I4

02.09.02.10

Barquillite

Cu2(Cd,Fe)GeS4

tetragonal : 42m : I42m

02.09.02.11

Chatkalite

Cu6Fe2+Sn2S8

tetragonal : 42m : P4m2

02.09.03.02

Stannoidite

Cu8(Fe,Zn)3Sn2S12

orthorhombisch : 222 : I222

02.09.03.03

Renierite

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

tetragonal : 42m : P42c

02.09.04.01

Germanite

Cu13Fe2Ge2S16

kubisch : 43m : P43n

02.09.04.02

Maikainite

Cu10Fe3MoGe3S16

02.09.04.03

Ovamboite

Cu10Fe3WGe3S16

02.09.04.04

Morozeviczite

(Pb,Fe)3Ge1-xS4

02.09.05.01

Polkovicite

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

02.09.05.02

Hemusite

Cu1+4Cu2+2SnMoS8

02.09.06.01

Kiddcreekite

Cu6SnWS8

02.09.06.02

Putoranite

Cu1.1Fe1.2S2

kubisch : m3m

02.09.07.01

Talnakhite

Cu9(Fe,Ni)8S16

kubisch : 43m : I43m

02.09.08.01

Haycockite

Cu4Fe5S8

02.09.08.02

Mooihoekite

Cu9Fe9S16

tetragonal : 42m : P42m

02.09.08.03

Raguinite

TlFeS2

monoklin : 2/m : C2/m

02.09.09.01

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

Stannoidite

Cu8(Fe,Zn)3Sn2S12

orthorhombisch : 222 : I222

06.01.12

Černýite

Cu2CdSnS4

tetragonal : 42m : I42m

06.01.13

Vinciennite

Cu10Fe4Sn(As,Sb)S16

06.01.14

Hocartite

Ag2FeSnS4

tetragonal : 42m : I42m

06.01.16

Alternative Name

German

Cernyit

English

Cernyite

CNMNC (IMA)-Number

IMA 1976-057

CNMNC symbol

Symbol

Čný

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

German pages

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