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Weishanite

Pictures (1 Images total)

Weishanit
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Weishanit
silberweiße, prismatische Kristalle von Weishanit, Keystone Mine, Magnolia, Boulder County, Colorado, USA; BB < 1 mm, analysiert mittels REM-EDX
Copyright: Joy Desor; Contribution: openpit
Location: USA/Colorado/Boulder Co./Magnolia District/Keystone Mine
Mineral: Weishanite
Image: 1591890538
License: Usage for Mineralienatlas project only
Weishanit  E
Analysed with energy dispersive X-ray spectroscopy EDX

silberweiße, prismatische Kristalle von Weishanit, Keystone Mine, Magnolia, Boulder County, Colorado, USA; BB < 1 mm, analysiert mittels REM-EDX
Copyright: Joy Desor
Contribution: openpit 2020-06-11
Locality: Keystone Mine / Magnolia District / Boulder Co. / Colorado / USA

Collectors Summary

Color hellgelb
Streak color hellgelb
Lustre Metallglanz
Hardness (Mohs) 2.4
Crystal System hexagonal, P63/mmc

Chemism

Chemical formula

(Au,Ag)1.2Hg0.8

Empirical formula (analysis)

(Au1.156Ag0.116)Hg0.796

Chemical composition

Gold, Quecksilber, Silber

Unit weight: 399.877279632 u; Number of atoms in the formula: 2.068

Info

Empirical formula:

(Au1.156Ag0.116)Hg0.796

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Silver

Ag

3.13

0.12

5.61

107.8682200

12.5127135
Gold

Au

56.94

1.16

55.90

196.9665520

227.6933341
Mercury

Hg

39.93

0.8

38.49

200.5920000

159.6712320

Analysis wt%

Au : 56.91, Hg : 39.92, Ag : 3.17 (Ref: American Mineralogist S84)

Strunz 9th edition incl. updates

1.AD.20

1: Elemente (Metalle, intermetallische Legierungen, Metalloide u. Nichtmetalle, Carbide, Silicide, Nitride u. Phosphide)
A: Metalle und intermetallische Legierungen
D: Quecksilber-Amalgam-Familie
20:Goldamalgam-Gruppe

Lapis Classification

I/A.02-080

I: ELEMENTE
A: Metalle und intermetallische Verbindungen

Classification by Hölzel

1.AE.400

1: ELEMENTS
A: Metals, Intermetallic Compounds, and Alloys
E: Mercury & Amalgam-Group

Hey's Chemical Index of Minerals

01.19

01: Elements and Alloys (including the arsenides, antimonides and bismuthides of Cu, Ag and Au)

Dana 8th edition

01.01.08.06

01: Native Elements and Alloys
01: Native Elements with metallic elements other than the platinum group
08: Silver Amalgam Alloys

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

hellgelb

Streak color

hellgelb

Diaphaneity (Transparency)

opak

Lustre

Metallglanz

Pleochroism

schwach

Anisotropism

schwach

Reflectivity: (Lambda nm) ↓, ↑, Ø

(480) 63.75, , 63.75
(534) 76.30, , 76.30
(589) 81.03, , 81.03
(656) 68.60, , 68.60
Reflection chart Weishanite

Reflectivity Ø

72.4

Crystallography

Crystal System

hexagonal

Class (H-M)

6/mmm

Space Group number

194

Space Group

P63/mmc

Cell parameters a (Å)

2.9180

Cell parameters b (Å)

-

Cell parameters c (Å)

4.8113

Cell parameters a/b or c/a

1.649

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

120°

Z

1

Volumne (ų)

35.478

X-Ray Powder Diffraction

2.243(10), 1.461(6), 1.359(8), 1.251(8), 1.225(6), 0.995(7), 0.940(9), 0.929(6)
XRD chart Weishanite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

2.4

VHN (Hardness Vickers)

51

Density (g/cm³)

18.523 (berechnet)

18.715 ( ρ calc. Mineralienatlas )

Tenacity

teilbar, formbar

(Co-)Type locality

(Co-)Type locality

China/Henan, Provinz/Nanyang, Präfektur/Tongbai, Kreis/Weishancheng Erzfeld

Type material

National Geological Museum, Beijing, China

Preface

Associations

Gold, Silber, Akanthit, Pyrit, Galenit, Sphalerit, Pyrrhotin, Scheelit

Name from

Für die Typlokalität im Weishancheng Erzfeld Tongbai Co., Henan Provinz, China

Author (Name, Year)

Li & Ouyang & Tian, 1984

References

Acta Mineralogica Sinica (in chinesisch) 4 (1984), 102.

American Mineralogist 73 (1988), 196.

American Mineralogist 74 (1989), 504.

Strunz Mineralogical Tables 9. Edition (2001), 40.

Other languages

German

Weishanit

Spanish

Weishanita

French

Weishanite

English

Weishanite

Russian

Вейшанит

Simplified Chinese

围山矿

CNMNC (IMA)-Number

IMA 1982-076

CNMNC symbol

Symbol

Whn

Locations with GPS information