Paraschachnerite Mineral Data

Paraschachnerite Mineral Data +

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General Paraschachnerite Information

Chemical Formula:

Ag3Hg2

Composition:

Molecular Weight = 724.78 gm

Silver 44.65 % Ag

Mercury 55.35 % Hg

______

100.00 %

Empirical Formula:

Ag₃Hg₂

Environment:

Found in the oxidezed zone, formed by the alteration of moschellandsbergite.

IMA Status:

Approved IMA 1972

Locality:

Landsberg, near Obermoschel, Germany. Link to MinDat.org Location Data.

Name Origin:

Named for its relationship to schachnerite.

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Paraschachnerite Crystallography

Axial Ratios:

a:b:c =0.5771:1:0.9415

Cell Dimensions:

a = 2.961, b = 5.13, c = 4.83, Z = 0.8; V = 73.37 Den(Calc)= 13.12

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: C mcm

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

By Intensity(I/I_o): 2.267(1), 1.263(0.6), 2.404(0.6),

Physical Properties of Paraschachnerite

Color:

Tin white.

Density:

12.98

Diaphaniety:

Opaque

Habit:

Twinning Common - Crystals are usually twinned.

Hardness:

4 - Fluorite

Luster:

Metallic

Streak:

metallic

Optical Properties of Paraschachnerite

RL Anisotrophism:

Distinct.

RL Color:

Creamy white.

RL Pleochroism:

Brownish rose-white to creamy white.

Calculated Properties of Paraschachnerite

Electron Density:

r_electron=10.9 gm/cc
note: r_{Paraschachnerite}=13.1 gm/cc.

Fermion Index

Fermion Index = 0.16716
Boson Index = 0.83284

Photoelectric:

PE_{Paraschachnerite}=1,065.73 barns/electron
U=PE_{Paraschachnerite} x r_electron=11613.67 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Paraschachnerite is Not Radioactive

Paraschachnerite Classification

Dana Class:

1.1.8.3 (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.02-60 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 Paraschachnerite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Paraschachnerite :
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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Paraschachnerite

Ag3Hg2
Dana No: 1.1.8.3 Strunz No: I/A.02-60
Locality:

Notes: