General Eugenite Information
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Chemical Formula: |
Ag9Hg2 |
Composition: |
Molecular Weight = 1,371.99 gm |
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Silver 70.76 % Ag |
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Mercury 29.24 % Hg |
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______ |
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100.00 % |
Empirical Formula: |
Ag9Hg2 |
IMA Status: |
Approved IMA 1986 |
Locality: |
Sieroszowice copper mine, Lubin-Sieroszowice distr., Poland. Link to MinDat.org Location Data. |
Name Origin: |
Named for Eugen Friedrich Stumpfl (1931-), Mineralogist, Mining University Leoben, Austria. |
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Eugenite Image |
Images:
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Images:
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Eugenite
Comments: Brassy, silvery eugenite alteration of leaf silver to 4mm.
Location: Elisa de Bordos mine, Copiap?, Atacama Province, Chile.
Scale: Picture size 1 cm.
© Tom Loomis / Dakota Matrix |
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Eugenite Crystallography
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Cell Dimensions: |
a = 10.02, Z = 4; V = 1,006.01 Den(Calc)= 9.06 |
Crystal System: |
Isometric - HextetrahedralH-M Symbol (4 3m) Space Group: I 43m |
X Ray Diffraction: |
By Intensity(I/Io): 2.37(1), 0.95(0.8), 2.1(0.8), |
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Physical Properties of Eugenite
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Color: |
Silver white. |
Density: |
10.75 |
Diaphaniety: |
Opaque |
Hardness: |
2.5-3 - Finger Nail-Calcite |
Luster: |
Metallic |
Streak: |
metallic |
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Calculated Properties of Eugenite
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Electron Density: |
relectron=7.70 gm/cc note: rEugenite =9.06 gm/cc. |
Fermion Index |
Fermion Index = 0.0883 Boson Index = 0.9117 |
Photoelectric: |
PEEugenite = 676.73 barns/electron U=PEEugenite x relectron=5,210.60 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Eugenite is Not Radioactive |
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Eugenite Classification
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Dana Class: |
1.1.8.5 (1)Native Elements |
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(1.1)with metallic elements other than the platinum group |
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(1.1.8)Silver Amalgam Alloys |
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1.1.8.0 Amalgam* Ag2Hg3 Unk Cubic |
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1.1.8.1 Moschellandsbergite Ag2Hg3 I m3m 4/m 3 2/m |
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1.1.8.2 Schachnerite Ag1.1Hg0.9 P 63/mmc 6/m 2/m 2/m |
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1.1.8.3 Paraschachnerite Ag3Hg2 C mcm 2/m 2/m 2/m |
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1.1.8.4 Luanheite Ag3Hg P 63/mmc 6/m 2/m 2/m |
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1.1.8.5 Eugenite Ag9Hg2 I 43m 4 3m |
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1.1.8.6 Weishanite (Au,Ag)3Hg2 P 63/mmc 6/m 2/m 2/m |
Strunz Class: |
I/A.02-28 I - Elements |
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I/A - Metallic and intermetallic compounds, Carbides, Nitrides, Phosphides and Silicides |
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I/A.02 - Mercury and Amalgame series |
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I/A.02-10 Mercury Hg R 3m 3 2/m |
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I/A.02-20 Kolymite Cu7Hg6 I 43m 4 3m |
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I/A.02-22 Belendorffite Cu7Hg6 R 3m 3m |
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I/A.02-28 Eugenite Ag9Hg2 I 43m 4 3m |
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I/A.02-30 Moschellandsbergite Ag2Hg3 I m3m 4/m 3 2/m |
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I/A.02-40 Luanheite Ag3Hg P 63/mmc 6/m 2/m 2/m |
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I/A.02-50 Schachnerite Ag1.1Hg0.9 P 63/mmc 6/m 2/m 2/m |
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I/A.02-60 Paraschachnerite Ag3Hg2 C mcm 2/m 2/m 2/m |
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I/A.02-70 Goldamalgam* (Au,Ag)Hg I m3m 4/m 3 2/m |
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I/A.02-80 Weishanite (Au,Ag)3Hg2 P 63/mmc 6/m 2/m 2/m |
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I/A.02-90 Potarite PdHg P 4/mmm 4/m 2/m 2/m |
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I/A.02-100 Leadamalgam HgPb2 I 4/mmm 4/m 2/m 2/m |
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Other Eugenite Information
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References: |
NAME( Dana8) PHYS. PROP.(37th List of New Min.,Min. Mag.,1996) |
See Also: |
Links to other databases for Eugenite :
1 -Am. Min. Crystal Structure Database
2 -Athena
3 - EUROmin Project
4 -Google Images
5 -Google Scholar
6 -Handbook of Mineralogy (UofA)
7 -MinDAT
8 -MinMax(Deutsch)
9 -MinMax(English)
10 -Mineralienatlas (Deutsch)
11 -QUT Mineral Atlas
12 -École des Mines de Paris
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Print or Cut-and-Paste your Eugenite Specimen Label here :
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Eugenite
Ag9Hg2
Dana No: 1.1.8.5 Strunz No: I/A.02-28
Locality:
Notes:
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