Luanheite Mineral Data

Luanheite Mineral Data +

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General Luanheite Information

Chemical Formula:

Ag3Hg

Composition:

Molecular Weight = 524.19 gm

Silver 61.73 % Ag

Mercury 38.27 % Hg

______

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.

Luanheite Image

Images:

Luanheite

Comments: Inclusions of luanheite, in tellurium, in quartz.
Location: Mina Bambolla, Moctezuma, Sonora, Mexico. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Luanheite Crystallography

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

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 1.495(1), 1.204(0.9), 2.83(0.7),

Physical Properties of Luanheite

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

Optical Properties of Luanheite

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	∑ R₁(λ)	∑ R₂(λ)
546 nm	62.40	70.50
589 nm	64.90	74.00

**Calculated Relative Intensity Colors of Luanheite in Air**
Relative Intensity	0%	20%	40%	60%	80%	100%	120%	140%
R₁
R₂

Calculated Properties of Luanheite

Electron Density:

r_electron=10.6 gm/cc
note: r_Luanheite=12.6 gm/cc.

Fermion Index

Fermion Index = 0.11556
Boson Index = 0.88444

Photoelectric:

PE_Luanheite= 809.18 barns/electron
U=PE_Luanheite x r_electron=8,576.53 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Luanheite is Not Radioactive

Luanheite Classification

Dana Class:

1.1.8.4 (1)Native Elements

(1.1)with metallic elements other than the platinum group

(1.1.8)Silver Amalgam Alloys

1.1.8.0 Amalgam* Ag2Hg3 Unk Cubic

1.1.8.1 Moschellandsbergite Ag2Hg3 I m3m 4/m 3 2/m

1.1.8.2 Schachnerite Ag1.1Hg0.9 P 6₃/mmc 6/m 2/m 2/m

1.1.8.3 Paraschachnerite Ag3Hg2 C mcm 2/m 2/m 2/m

1.1.8.4 Luanheite Ag3Hg P 6₃/mmc 6/m 2/m 2/m

1.1.8.5 Eugenite Ag9Hg2 I 43m 4 3m

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

I/A - Metallic and intermetallic compounds, Carbides, Nitrides, Phosphides and Silicides

I/A.02 - Mercury and Amalgame series

I/A.02-10 Mercury Hg R 3m 3 2/m

I/A.02-20 Kolymite Cu7Hg6 I 43m 4 3m

I/A.02-22 Belendorffite Cu7Hg6 R 3m 3m

I/A.02-28 Eugenite Ag9Hg2 I 43m 4 3m

I/A.02-30 Moschellandsbergite Ag2Hg3 I m3m 4/m 3 2/m

I/A.02-40 Luanheite Ag3Hg P 6₃/mmc 6/m 2/m 2/m

I/A.02-50 Schachnerite Ag1.1Hg0.9 P 6₃/mmc 6/m 2/m 2/m

I/A.02-60 Paraschachnerite Ag3Hg2 C mcm 2/m 2/m 2/m

I/A.02-70 Goldamalgam* (Au,Ag)Hg I m3m 4/m 3 2/m

I/A.02-80 Weishanite (Au,Ag)3Hg2 P 6₃/mmc 6/m 2/m 2/m

I/A.02-90 Potarite PdHg P 4/mmm 4/m 2/m 2/m

I/A.02-100 Leadamalgam HgPb2 I 4/mmm 4/m 2/m 2/m

Other Luanheite Information

References:

NAME( AntBidBlaNic1) PHYS. PROP.(Am.Min.,Vol.73,p192,1988) OPTIC PROP.(AntBidBlaNic1)

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Luanheite

Ag3Hg
Dana No: 1.1.8.4 Strunz No: I/A.02-40
Locality:

Notes: