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Sylvanite (Sylvanit)

Pictures (32 Images total)

Sylvanit
Views (Image: 1404207286): 2387
Sylvanit

Bildbreite: 3 mm; Fundort: Sacarîmb (Nagyág), Kreis Hunedoara, Rumänien

Copyright: Stephan Wolfsried
Contribution: Hg 2014-07-01
Locality: Sacarimb (Nagyag) / Hunedoara, Kreis / Rumänien
Sylvanit x mit kleinen Tellur xx
Views (Image: 1333900817): 5008
Sylvanit x mit kleinen Tellur xx

Emperor Mine,Viti Levu/Fiji Inseln; Länge des Kristalls: 10 mm

Collection: Haubi
Copyright: Haubi
Contribution: Haubi 2012-04-08
Locality: Emperor Mine / Tavua Gold Field / Viti Levu / Fidschi
Sylvanit
Views (Image: 1225585597): 4124
Sylvanit

Bildbreite: 3 mm; Fundort: Cripple Creek, Teller Co., Colorado, USA

Copyright: Leonardus
Contribution: slugslayer 2008-11-02
Locality: Cripple Creek District / Teller Co. / Colorado / USA
Sylvanit
Views (Image: 1404207199): 709
Sylvanit

Bildbreite: 1,4 mm; Fundort: Sacarîmb (Nagyág), Kreis Hunedoara, Rumänien

Copyright: Stephan Wolfsried
Contribution: Hg 2014-07-01
Locality: Sacarimb (Nagyag) / Hunedoara, Kreis / Rumänien
Sylvanit
Views (Image: 1601814348): 363
Sylvanit (SNr: AuMin-Sylv-2-1-61)

Dieser prismatische Sylvanitkristall stammt aus Emperor Mine bei Viti Levu auf Fidschi. Bildhöhe etwa 3,8 mm.

Collection: Klaus Schäfer
Copyright: Klaus Schäfer
Contribution: Klaus Schäfer 2020-10-04
Locality: Emperor Mine / Tavua Gold Field / Viti Levu / Fidschi
Sylvanit
Views (Image: 1296725475): 1186
Sylvanit

Kristallgröße: 10 mm; Fundort: Baia de Aries, Alba, Rumänien

Copyright: Fabre Minerals
Contribution: slugslayer 2011-02-03
Locality: Baia de Aries (Offenbanya) / Alba, Kreis / Rumänien

Collectors Summary

Color stahlgrau, silberweiß mit Neigung zu gelb, cremeweiß
Streak color stahlgrau, silberweiß
Lustre Metallglanz
Hardness (Mohs) 1.5-2
Cleavages vollkommen {010}
Fracture uneben
Solubility + HNO3
Crystal System monoklin, P2/c
Morphology Kristalle sehen wie Hyroglyphen aus, Skelettbildungen, Dendriten, körnig

Chemism

Chem­ical formula

AgAuTe4

Addi­tional chem. informa­tion

Beimengungen von Sb, Pb, Cu

Chem­ical com­po­si­tion

Gold, Silber, Tellur

Unit weight: 815.246772 u; Number of atoms in the formula: 6

Info

Empirical formula:

AgAuTe4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Silver

Ag

13.23

1

16.67

107.8682200

107.8682200

Tellurium

Te

62.61

4

66.67

127.6030000

510.4120000

Gold

Au

24.16

1

16.67

196.9665520

196.9665520

Anal­y­sis wt%

Au : 26.09, Ag : 12.49, Te : 60.82, Fe : 1.19 (Ref: Dana, 7th ed. 1)

Strunz 9th edi­tion incl. updates

2.EA.05

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
E: Metallsulfide mit M:S >= 1:2
A: M:S = 1:2, mit Cu, Ag, Au; Ni, Sn, PGE, Mo, W
05:Kostovit-Sylvanit-Gruppe mit Ni, Sn, PGE

Lapis Clas­sifica­tion

II/D.16-020

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
D: Sulfide mit Metall : S,Se,Te < 1:1
16: Telluride mit Kupfer, Silber, Gold

Clas­sifica­tion by Hölzel

2.EA.130

2: SULFIDES
E: Me/S=1/2 (also < 1/2)
A: Me/S=1/2 with Cu,Ag,Au, etc.
1: Sylvanite-Group

Dana 8th edi­tion

02.12.13.03

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

IMA sta­tus

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

stahlgrau, silberweiß mit Neigung zu gelb, cremeweiß

Streak color

stahlgrau, silberweiß

Change in color

poliert cremeweiß

Diaphane­ity (Trans­parency)

opak

Lus­tre

Metallglanz

Pleochro­ism

stark; cremeweiß zu Leder-braun

Anisotropism

Sehr stark; graubraun, grauweiß, gelblich und bläulichen Tönungen

Reflec­tiv­ity: (Lambda nm) ↓, ↑, Ø

(400) 43.2, 53.6, 48.40
(420) 45.4, 55.9, 50.65
(440) 47.7, 57.9, 52.80
(460) 49.7, 59.6, 54.65
(480) 50.9, 60.8, 55.85
(500) 51.8, 61.8, 56.80
(520) 52.3, 62.6, 57.45
(540) 52.5, 62.9, 57.70
(560) 52.5, 63.0, 57.75
(580) 52.5, 63.0, 57.75
(600) 52.6, 62.9, 57.75
(620) 52.8, 62.7, 57.75
(640) 53.0, 62.4, 57.70
(660) 53.3, 62.2, 57.75
(680) 53.6, 62.2, 57.90
(700) 54.1, 62.4, 58.25

Reflection chart Sylvanite

Reflec­tiv­ity Ø

56.06

Optical Data Luminescence

Lumi­nes­cence

keine Fluoreszenz bekannt

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

13

Space Group

P2/c

Cell param­e­ters a (Å)

8.94

Cell param­e­ters b (Å)

4.48

Cell param­e­ters c (Å)

14.59

Cell param­e­ters a/b or c/a

1.996

Cell param­e­ters c/b

3.257

Cell param­e­ters α

90°

Cell param­e­ters β

145.43

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

331.566

X-Ray Pow­der Diffrac­tion

5.08(10),
3.04(100),
2.97(20),
2.25(30),
2.14(50),
1.984(30),
1.792(20),
1.519(20)

XRD chart Sylvanite

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

Morphol­ogy

Kristalle sehen wie Hyroglyphen aus, Skelettbildungen, Dendriten, körnig

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

1.5-2

VHN (Hard­ness Vick­ers)

154 - 172 (100g)

Density (g/cm³)

8.16 (gemssen) 8.161 (berechnet)

8.165 ( ρ calc. Mineralienatlas )

Cleav­ages

vollkommen {010}

Frac­ture

uneben

Tenac­ity

spröde

Insta­bil­ity

+ HNO3

(Co-)Type locality

(Co-)Type locality

Rumänien/Alba, Kreis/Baia de Aries (Offenbanya)

Preface

Gen­er­a­tion con­di­tions

hydrothermal

Asso­cia­tions

Krennerit, Petzit, Calaverit

Name from

Benennung nach Transsylvanien (Mecker, 1835)

Author (Name, Year)

Necker, 1835

Rel­evance, Usage

Au-, Ag-, Te- Erz

References

Handbook of Mineralogy (Anthony et al.), 1 (1990), 509

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

Sylvanite

AgAuTe4

monoklin : 2/m : P2/c

2.EA.05

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

Kostovite

CuAuTe4

orthorhombisch : mm2 : Pma2

II/D.16-010

Sylvanite

AgAuTe4

monoklin : 2/m : P2/c

II/D.16-020

Krennerite

Au3AgTe8

orthorhombisch : mm2 : Pma2

II/D.16-030

Calaverite

AuTe2

monoklin : 2/m : C2/m

II/D.16-040

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

Kostovite

CuAuTe4

orthorhombisch : mm2 : Pma2

2.EA.100

Krennerite

Au3AgTe8

orthorhombisch : mm2 : Pma2

2.EA.110

Sylvanite

AgAuTe4

monoklin : 2/m : P2/c

2.EA.130

Calaverite

AuTe2

monoklin : 2/m : C2/m

2.EA.150

Verbeekite

PdSe2

monoklin : 2/m, 2, m : C2/m, C2, Cm

2.EA.160

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

Krennerite

Au3AgTe8

orthorhombisch : mm2 : Pma2

02.12.13.01

Calaverite

AuTe2

monoklin : 2/m : C2/m

02.12.13.02

Sylvanite

AgAuTe4

monoklin : 2/m : P2/c

02.12.13.03

Kostovite

CuAuTe4

orthorhombisch : mm2 : Pma2

02.12.13.04

Melonite

NiTe2

trigonal : 3m : P3m1

02.12.14.01

Kitkaite

NiTeSe

trigonal : 3m : P3m1

02.12.14.02

Moncheite

(Pt,Pd)(Te,Bi)2

trigonal : 3m : P3m1

02.12.14.03

Merenskyite

PdTe2

trigonal : 3m : P3m1

02.12.14.04

Shuangfengite

IrTe2

trigonal : 3m : P3m1

02.12.14.06

Sudovikovite

PtSe2

trigonal : 3m : P3m1

02.12.14.07

Froodite

PdBi2

monoklin : 2/m : C2/m

02.12.15.01

Urvantsevite

Pd(Bi,Pb)2

tetragonal : 4/mmm : I4/mmm

02.12.15.02

Verbeekite

PdSe2

monoklin : 2/m, 2, m : C2/m, C2, Cm

02.12.15.03

Borishanskiite

Pd(As,Pb)2

orthorhombisch : mm2 : Ccm21

02.12.16.01

Skutterudite

CoAs3

kubisch : m3 : Im3

02.12.17.01

Nickelskutterudite

(Ni,Co,Fe)As3

kubisch : m3 : Im3

02.12.17.02

Kieftite

CoSb3

kubisch : m3 : Im3

02.12.17.03

Rheniite

ReS2

triklin : 1 : P1

02.12.18.01

Alternative Name

German

Aurotellurit

Spanish

Aurotellurita

Aurotellurite

Latin

Aurum Bismuthicum

Latin

Aurum Graphicum

German

Goldschmidtit (nach Hobbs)

German

Goldtellur

Graphic Tellurium

French

Or graphique

German

Schrifterz

French

Sylvane graphique

Sylvanite (of Necker)

Yellow Tellurium

offenbanyer Silber

Papp 111 (2004)

offobanyer Silber

Papp 111 (2004)

or bismuthique

Papp 75 (2004)

or blanc

Haüy III, 226 (1822)

or blanc d'Offenbanya

Dana 6th, 103 (1892)

or blanc dendritique

Papp 110 (2004)

or d'Offenbanya

Egleston 240 (1892)

or graphique

Dana 6th, 1124 (1892)

or gris jaunâtre (Sylvanit)

Egleston 178 (1892)

oro - graphico

Dana 7th I, 338 (1944)

oro dendritico

de Fourestier 255 (1999)

oro gráfico

Dana 6th, 103 (1892)

Simplified Chinese

针碲金矿

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

German pages

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

English pages

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

Russian pages

Webmineral.ru - search for: Сильванит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Sylvanit
Crystal-Treasure.com - search for: Sylvanit
Bosse - search for: Sylvanit

Locations with GPS information