General Luanheite Information
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Chemical Formula: |
Ag3Hg |
Composition: |
Molecular Weight = 524.19 gm |
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Silver 61.73 % Ag |
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Mercury 38.27 % Hg |
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______ |
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100.00 % |
Empirical Formula: |
Ag3Hg |
Environment: |
In a placer containing gold and other elements. |
IMA Status: |
Approved IMA 1984 |
Locality: |
Luanhe River, Chengde Co.,Hebei Province, China. Link to MinDat.org Location Data. |
Name Origin: |
Named for the locality. |
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Luanheite Image |
Images:
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Luanheite Crystallography
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Axial Ratios: |
a:c = 1:1.66111 |
Cell Dimensions: |
a = 6.61, c = 10.98, Z = 6; V = 415.47 Den(Calc)= 12.57 |
Crystal System: |
Hexagonal - Dihexagonal DipyramidalH-M Symbol (6/m 2/m 2/m) Space Group: P 63/mmc |
X Ray Diffraction: |
By Intensity(I/Io): 1.495(1), 1.204(0.9), 2.83(0.7), |
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Physical Properties of Luanheite
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Cleavage: |
None |
Color: |
Gray white, Black. |
Density: |
12.5 |
Diaphaniety: |
Opaque |
Fracture: |
Malleable - Deforms rather than breaking apart with a hammer. |
Habit: |
Granular - Generally occurs as anhedral to subhedral crystals in matrix. |
Habit: |
Tabular - Form dimensions are thin in one direction. |
Hardness: |
2.5 - Finger Nail |
Luster: |
Metallic |
Streak: |
grayish black |
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Optical Properties of Luanheite
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RL Anisotrophism: |
Very weak. |
RL Color: |
Milky white. |
RL Pleochroism: |
Pinkish gray to milky white. |
Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Luanheite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 546 nm |
62.40 |
70.50 |

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| 589 nm |
64.90 |
74.00 |

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Calculated Relative Intensity Colors of Luanheite in Air
Relative Intensity |
0% |
20% |
40% |
60% |
80% |
100% |
120% |
140% |
| R1 |
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| R2 |
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Calculated Properties of Luanheite
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Electron Density: |
relectron=10.6 gm/cc note: rLuanheite =12.6 gm/cc. |
Fermion Index |
Fermion Index = 0.11556 Boson Index = 0.88444 |
Photoelectric: |
PELuanheite = 809.18 barns/electron U=PELuanheite x relectron=8,576.53 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Luanheite is Not Radioactive |
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Luanheite Classification
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Dana Class: |
1.1.8.4 (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.02-40 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 Luanheite Information
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References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Am.Min.,Vol.73,p192,1988) OPTIC PROP.(AntBidBlaNic1) |
See Also: |
Links to other databases for Luanheite :
1 -Am. Min. Crystal Structure Database
2 -Athena
3 - Crocoite.com Mineral Locations
4 - EUROmin Project
5 -Google Images
6 -Google Scholar
7 -Handbook of Mineralogy (UofA)
8 -MinDAT
9 -MinMax(Deutsch)
10 -MinMax(English)
11 -Mineralienatlas (Deutsch)
12 -QUT Mineral Atlas
13 -École des Mines de Paris
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Print or Cut-and-Paste your Luanheite Specimen Label here :
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Luanheite
Ag3Hg
Dana No: 1.1.8.4 Strunz No: I/A.02-40
Locality:
Notes:
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