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Krennerite

Pictures (13 Images total)

Krennerit
Views (Image: 1404132874): 3279
Krennerit

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

Copyright: Stephan Wolfsried
Contribution: Hg 2014-06-30
Locality: Sacarimb (Nagyag) / Hunedoara, Kreis / Rumänien
Krennerit
Views (Image: 1295888210): 2432
Krennerit

Kristallgröße: ca. 3 mm, Fundort: Cresson Mine, Cripple Creek District, Teller Co., Colorado, USA

Copyright: Rob Lavinsky
Contribution: thdun5 2011-01-24
Locality: Cresson Mine / Eclipse Gulch / Cripple Creek District / Teller Co. / Colorado / USA
Krennerit
Views (Image: 1404132826): 1479
Krennerit

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

Copyright: Stephan Wolfsried
Contribution: Hg 2014-06-30
Locality: Sacarimb (Nagyag) / Hunedoara, Kreis / Rumänien
Krennerit
Views (Image: 1276110475): 2001
Krennerit

Kristallgröße: 0,5 mm, Fundort: Sacarîmb (Nagyág), Hunedoara, Rumänien

Copyright: Jason B. Smith
Contribution: thdun5 2010-06-09
Locality: Sacarimb (Nagyag) / Hunedoara, Kreis / Rumänien
Krennerit
Views (Image: 1308818893): 1971
Krennerit

Bildbreite: 51 mm; Fundort: Emperor Mine, Tavua Gold Field, Viti Levu, Fiji

Collection: Rock Currier
Copyright: Rock Currier
Contribution: slugslayer 2011-06-23
Locality: Emperor Mine / Tavua Gold Field / Viti Levu / Fidschi
Krennerit
Views (Image: 1308818868): 1142, Rating: 4.75
Krennerit

Größe: 50x39 mm; Fundort: Emperor Mine, Tavua Gold Field, Viti Levu, Fiji

Collection: Rock Currier
Copyright: Rock Currier
Contribution: slugslayer 2011-06-23
Locality: Emperor Mine / Tavua Gold Field / Viti Levu / Fidschi

Collectors Summary

Color silberweiß
Streak color grünlich grau
Lustre Metallglanz
Hardness (Mohs) 2.5
Solubility +++ Königswasser, heiße H2SO4
Crystal System orthorhombisch, Pma2
Morphology grobspätige Aggregate

Chemism

Chem­ical formula

Au3AgTe8

Chem­ical com­po­si­tion

Gold, Silber, Tellur

Unit weight: 1719.591876 u; Number of atoms in the formula: 12

Info

Empirical formula:

Au3AgTe8

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Silver

Ag

6.27

1

8.33

107.8682200

107.8682200

Tellurium

Te

59.36

8

66.67

127.6030000

1,020.8240000

Gold

Au

34.36

3

25.00

196.9665520

590.8996560

Anal­y­sis wt%

Au : 36.19, Ag : 4.87, Te : 58.50 (Ref: Dana, 7th ed. 1)

Strunz 9th edi­tion incl. updates

2.EA.15

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
15:Krennerit-Gruppe

Lapis Clas­sifica­tion

II/D.16-030

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.110

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

02.12.13.01

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

silberweiß

Streak color

grünlich grau

Change in color

cremeweiß in reflektiertem Licht

Diaphane­ity (Trans­parency)

opak

Lus­tre

Metallglanz

Pleochro­ism

schwach

Anisotropism

stark

Reflec­tiv­ity: (Lambda nm) ↓, ↑, Ø

(400) 44.40, 50.30, 47.35
(420) 46.80, 52.50, 49.65
(440) 49.10, 54.60, 51.85
(460) 51.10, 56.40, 53.75
(480) 52.60, 57.70, 55.15
(500) 53.70, 58.70, 56.20
(520) 56.40, 59.40, 57.90
(540) 55.10, 59.90, 57.50
(560) 55.60, 60.30, 57.95
(580) 56.00, 60.60, 58.30
(600) 56.40, 60.70, 58.55
(620) 56.70, 60.80, 58.75
(640) 57.00, 60.90, 58.95
(660) 57.20, 60.90, 59.05
(680) 57.30, 60.90, 59.10
(700) 57.40, 60.80, 59.10

Reflection chart Krennerite

Reflec­tiv­ity Ø

56.19

Optical Data Luminescence

Lumi­nes­cence

keine Fluoreszenz bekannt

Crystallography

Crystal Sys­tem

orthorhombisch

Class (H-M)

mm2

Space Group number

28

Space Group

Pma2

Cell param­e­ters a (Å)

16.54

Cell param­e­ters b (Å)

8.82

Cell param­e­ters c (Å)

4.46

Cell param­e­ters a/b or c/a

1.875

Cell param­e­ters c/b

0.506

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

650.637

Kristall struc­ture

aufgeklärt [1]

X-Ray Pow­der Diffrac­tion

3.03(100),
2.94(60),
2.23(50),
2.11(70),
2.07(40),
1.78(40),
1.69(40),
1.52(40)

XRD chart Krennerite

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

Morphol­ogy

grobspätige Aggregate

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

2.5

VHN (Hard­ness Vick­ers)

176 (100g)

Density (g/cm³)

8.62 (gemessen) 8.81 (berechnet)

8.777 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+++ Königswasser, heiße H2SO4

(Co-)Type locality

(Co-)Type locality

Rumänien/Hunedoara, Kreis/Sacarimb (Nagyag)

Preface

Author (Name, Year)

vom Rath, 1877

References

Handbook of Mineralogy (Anthony et al.), 1 (1990), 275

Other languages

German

Krennerit

Spanish

Krennerita

English

Krennerite

French

Krennerite

Russian

Креннерит

Japanese

クレンネル鉱

Alternative Name

German

Bunsenin

German

Gelberz

Mllerine

German

Müllerin

Müllerine

German

Weißtellur

J.F.L. Hausmann: Handbuch der Mineralogie, 1813; Lapis-Mineralienverzeichnis 2018

or gris jaunâtre (Krennerit)

Egleston 178 (1892)

Simplified Chinese

斜方碲金矿

Simplified Chinese

白碲金银矿

CNMNC symbol

Symbol

Knn

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

German pages

DeWikiPedia - search for: Krennerit
Google-Bilder-Suche - search for: Krennerit
Mineralienatlas.de (Forum) - search for: Krennerit

English pages

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

Russian pages

Webmineral.ru - search for: Креннерит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Krennerit
Crystal-Treasure.com - search for: Krennerit
Bosse - search for: Krennerit
Edelsteine Neuburg - Gundolf Fischer - search for: Krennerit

Locations with GPS information