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Selenojalpaite

Collectors Summary

Color dunkelgrau
Streak color schwarz
Lustre Metallglanz
Hardness (Mohs) 4 - 4.5
Cleavages keine
Fracture uneben
Crystal System tetragonal, I41/amd

Chemism

Chem­ical formula

Ag3CuSe2

Chem­ical com­po­si­tion

Kupfer, Selen, Silber

Unit weight: 545.07696 u; Number of atoms in the formula: 6

Info

Empirical formula:

Ag3CuSe2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Copper

Cu

11.66

1

16.67

63.5463000

63.5463000

Selenium

Se

28.97

2

33.33

78.9630000

157.9260000

Silver

Ag

59.37

3

50.00

107.8682200

323.6046600

Anal­y­sis wt%

Ag : 59.20, Cu : 11.81, Se : 29.01 (Ref: Canadian Mineralogist 2005)

Strunz 9th edi­tion incl. updates

2.BA.45

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
B: Metallsulfide, M : S > 1 : 1 (hauptsächlich 2 : 1)
A: mit Kupfer (Cu), Silber (Ag), Gold (Au)
45:Jalpait-Gruppe

Lapis Clas­sifica­tion

II/B.06-015

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
B: Sulfide, Selenide und Telluride mit Verhältnis Metall : S,Se,Te > 1:1
6: Sulfide, Selenide und Telluride mit vorwiegend Kupfer und Silber/Gold

Clas­sifica­tion by Hölzel

2.BA.445

2: SULFIDES
B: Sulfides (etc) with Me/S > 1/1 (mostly 2/1)
A: With Cu,Ag,Au
4: Stromeyerite-Jalpaite-Group

Dana 8th edi­tion

02.04.04.02

02: Sulfide Minerals
04: Sulfides - Including Selenides and Tellurides where Am Bn Xp, with (m+n):p=2:1

IMA sta­tus

anerkannt 2004

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

dunkelgrau

Streak color

schwarz

Diaphane­ity (Trans­parency)

opak

Lus­tre

Metallglanz

Pleochro­ism

schwach von bräunlichgrau nach etwas dunkler grünlichgrau

Bireflectance

schwach bis moderat

Crystallography

Crystal Sys­tem

tetragonal

Class (H-M)

4/mmm

Space Group number

141

Space Group

I41/amd

Cell param­e­ters a (Å)

8.939

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

11.844

Cell param­e­ters a/b or c/a

1.325

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

8

Volumne (ų)

946.403

X-Ray Pow­der Diffrac­tion

4.47(60), 2.891(85), 2.813(80), 2.552(50), 2.473(75), 2.426(100), 2.162(70), 2.034(60)

XRD chart Selenojalpaite

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

Physical Properties

Hard­ness (Mohs)

4 - 4.5

VHN (Hard­ness Vick­ers)

37 (25g)

Density (g/cm³)

7.64 (berechnet)

7.651 ( ρ calc. Mineralienatlas )

Cleav­ages

keine

Frac­ture

uneben

Tenac­ity

spröde

(Co-)Type locality

(Co-)Type locality

Schweden/Östergötland, Provinz/Valdemarsvik/Skrikerum

Type mate­r­ial

Museo di Storia Naturale, Universität von Florenz, Italien

Col­lec­tion number of type mate­r­ial

1768/I

Preface

Asso­cia­tions

Eukairit, Berzelianit

Name from

dem S-Analog Jalpait

Author (Name, Year)

Bindi & Pratesi, 2005

References

Bindi, L. & Pratesi, G. (2005): "Selenojalpaite, Ag3CuSe2, ein neues Mineral aus der Skrikerum Cu–Ag–Tl Selenid Lagerstätte, Smaland, southeastern Sweden", Canadian Mineralogist: 43: 1373-1377

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

Jalpaite

Ag3CuS2

tetragonal : 4/mmm : I41/amd

2.BA.45

Selenojalpaite

Ag3CuSe2

tetragonal : 4/mmm : I41/amd

2.BA.45

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

Jalpaite

Ag3CuS2

tetragonal : 4/mmm : I41/amd

II/B.06-010

Selenojalpaite

Ag3CuSe2

tetragonal : 4/mmm : I41/amd

II/B.06-015

Mckinstryite

Ag5Cu3S4

orthorhombisch : mmm, mm2 : Pnma

II/B.06-020

Stromeyerite

AgCuS

orthorhombisch : mm2 : Cmc21

II/B.06-030

Eucairite

CuAgSe

orthorhombisch : mmm : Pmmn

II/B.06-040

Henryite

Cu4Ag3Te4

II/B.06-050

Brodtkorbite

Cu2HgSe2

monoklin : 2/m : P21/n

II/B.06-055

Imiterite

Ag2HgS2

monoklin : 2/m : P21/c

II/B.06-060

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

Stromeyerite

AgCuS

orthorhombisch : mm2 : Cmc21

2.BA.400

Mckinstryite

Ag5Cu3S4

orthorhombisch : mmm, mm2 : Pnma

2.BA.420

Jalpaite

Ag3CuS2

tetragonal : 4/mmm : I41/amd

2.BA.440

Selenojalpaite

Ag3CuSe2

tetragonal : 4/mmm : I41/amd

2.BA.445

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

Acanthite

Ag2S

monoklin : 2/m : P21/n

02.04.01.01

Naumannite

Ag2Se

orthorhombisch : 222 : P212121

02.04.01.02

Aguilarite

Ag4SeS

02.04.01.03

Hessite

Ag2Te

monoklin : 2/m : P21/c

02.04.02.01

Cervelleite

Ag4TeS

monoklin : 2/m : P21/n

02.04.02.02

Uytenbogaardtite

Ag3AuS2

trigonal : 3m : R3c

02.04.03.01

Fischesserite

Ag3AuSe2

kubisch : 432 : I4132

02.04.03.02

Petzite

Ag3AuTe2

kubisch : 432 : I4132

02.04.03.03

Jalpaite

Ag3CuS2

tetragonal : 4/mmm : I41/amd

02.04.04.01

Selenojalpaite

Ag3CuSe2

tetragonal : 4/mmm : I41/amd

02.04.04.02

Mckinstryite

Ag5Cu3S4

orthorhombisch : mmm, mm2 : Pnma

02.04.05.01

Stromeyerite

AgCuS

orthorhombisch : mm2 : Cmc21

02.04.06.01

Eucairite

CuAgSe

orthorhombisch : mmm : Pmmn

02.04.06.02

Chalcocite

Cu2S

monoklin : 2/m : P21/c

02.04.07.01

Djurleite

Cu31S16

monoklin : 2/m : P21/n

02.04.07.02

Digenite

Cu1.8S

trigonal : 3m : R3m

02.04.07.03

Roxbyite

Cu58S32

triklin : 1 : P1

02.04.07.04

Anilite

Cu7S4

orthorhombisch : mmm : Pnma

02.04.07.05

Geerite

Cu8S5

trigonal : 32, 3m, 3m : R32, R3m, R3m

02.04.07.06

Spionkopite

Cu39S28

trigonal : 3m, 32, 3m : P3m1, P321, P3m1

02.04.07.07

Weissite

Cu2-xTe {x ≈ 0.21}

hexagonal : 6/mmm : P6/mmm

02.04.08.01

Bellidoite

Cu2Se

tetragonal : 4/m, : P42/n,

02.04.09.01

CNMNC (IMA)-Number

IMA 2004-048

CNMNC symbol

Symbol

Sjal

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

German pages

DeWikiPedia - search for: Selenojalpait
Google-Bilder-Suche - search for: Selenojalpait
Mineralogisch-Petrographisches-Institut Hamburg - search for: Selenojalpait

English pages

Mindat - search for: Selenojalpaite
Webmineral - search for:Selenojalpaite
Handbook-of-Mineralogy - search for: Selenojalpaite
RRUFF - Raman, XRD and other mineral data - search for: Selenojalpaite
RRUFF - References and PDF downloads - search for: Selenojalpaite
American-Mineralogist-Crystal-Structure-Database - search for: Selenojalpaite
Athena - search for: Selenojalpaite

Russian pages

Webmineral.ru - search for: Селеноялпаит

Mineral Dealer

German pages

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Crystal-Treasure.com - search for: Selenojalpait
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Locations with GPS information