Eugenite Mineral Data

Eugenite Mineral Data
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General Eugenite Information

Help on Chemical Formula: Chemical Formula: Ag9Hg2
Help on Composition: Composition: Molecular Weight = 1,371.99 gm
   Silver   70.76 %  Ag
   Mercury  29.24 %  Hg
           ______ 
           100.00 % 
Help on Empirical Formula: Empirical Formula: Ag9Hg2
Help on IMA Status: IMA Status: Approved IMA 1986
Help on Locality: Locality: Sieroszowice copper mine, Lubin-Sieroszowice distr., Poland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Eugen Friedrich Stumpfl (1931-), Mineralogist, Mining University Leoben, Austria.
Help on Name Pronunciation: Name Pronunciation: Eugenite Say EUGENITE
 

Eugenite Image

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Eugenite

Comments: Metallic, silvery eugenite.
Location: Copiapó, Atacama, Chile. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag
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Eugenite

Comments: Brassy, silvery eugenite alteration of leaf silver to 4mm.
Location: Elisa de Bordos mine, Copiapó, Atacama Province, Chile. Scale: Picture size 1 cm.
© Tom Loomis / Dakota Matrix

Eugenite Crystallography
Help on Cell Dimensions: Cell Dimensions: a = 10.02, Z = 4; V = 1,006.01 Den(Calc)= 9.06
Help on Crystal System: Crystal System: Isometric - HextetrahedralH-M Symbol (4 3m) Space Group: I 43m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.37(1), 0.95(0.8), 2.1(0.8),
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Owen E A , O Donnell Roberts E A , Journal of the Institute of Metals , 71 (1945) p.213-254, The solubility of certain metals in gold

 

Physical Properties of Eugenite

Help on Color: Color: Silver white.
Help on Density: Density: 10.75
Help on Diaphaneity: Diaphaneity: Opaque
Help on Hardness: Hardness: 2.5-3 - Finger Nail-Calcite
Help on Luster: Luster: Metallic
Help on Streak: Streak: metallic
 

Calculated Properties of Eugenite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=7.70 gm/cc
note: Specific Gravity of Eugenite =9.06 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.08
Boson Index = 0.92
Help on Photoelectric: Photoelectric: PEEugenite = 676.73 barns/electron
U=PEEugenite x rElectron Density=5,210.60 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Eugenite is Not Radioactive
 

Eugenite Classification
Help on Dana Class: Dana Class: 01.01.08.05 (01)Native Elements
  (01.01)with metallic elements other than the platinum group
  (01.01.08)Silver Amalgam Alloys
 
01.01.08.00 Amalgam* Ag2Hg3 Unk Cubic
 
01.01.08.01 Moschellandsbergite Ag2Hg3 I m3m 4/m 3 2/m
 
01.01.08.02 Schachnerite Ag1.1Hg0.9 P 63/mmc 6/m 2/m 2/m
 
01.01.08.03 Paraschachnerite Ag3Hg2 C mcm 2/m 2/m 2/m
 
01.01.08.04 Luanheite Ag3Hg P 63/mmc 6/m 2/m 2/m
 
01.01.08.05 Eugenite Ag9Hg2 I 43m 4 3m
 
01.01.08.06 Weishanite (Au,Ag)3Hg2 P 63/mmc 6/m 2/m 2/m
Help on Strunz Class: Strunz Class: 01.AD.15c 01 - ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
  01.A - Metals and Intermetallic Alloys
  01.AD -Mercury-amalgam family
 
01.AD.15c Eugenite Ag9Hg2 I 43m 4 3m
 

Other Eugenite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(37th List of New Min.,Min. Mag.,1996)
Help on See Also: See Also: Links to other databases for Eugenite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Ask about Eugenite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Eugenite Specimen Label here :

Eugenite

Ag9Hg2
Dana No: 01.01.08.05 Strunz No: 01.AD.15c
Locality:

 

Notes: