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Polhemusite Mineral Data
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General Polhemusite Information
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 Chemical Formula: |
(Zn,Hg)S |
| Composition: |
Molecular Weight = 131.26 gm |
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Zinc 37.36 % Zn |
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Mercury 38.21 % Hg |
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Sulfur 24.43 % S |
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______ |
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100.00 % |
| Empirical Formula: |
Zn0.75Hg0.25S |
| Environment: |
As part of a replacement deposit of stibnite. |
| IMA Status: |
Approved IMA 1978 |
| Locality: |
B and B deposit, Big Creek district, Valley County, Idaho, USA Link to MinDat.org Location Data. |
| Name Origin: |
Named for Clyde Polhemus Ross, American economic geologist. |
| Name Pronunciation: |
Polhemusite + Pronunciation  |
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Polhemusite Image |
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Images:
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Polhemusite
Comments: B&W polished section (PPL) image (green filter) of aggregates of polhemusite (P) in stibnite (S) with associated cinnabar (C) and quartz (Q). (AmMin, v63:1153).
Location: Mercury-bearing antimony ore from the B and B deposit, Big Creek district, Valley County, Idaho.
Scale: Scale Bar 0.5 mm.
© American Mineralogist |
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Polhemusite Crystallography
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| Axial Ratios: |
a:c = 1:1.6923 |
| Cell Dimensions: |
a = 8.71, c = 14.74, Z = 24; V = 1,118.24 Den(Calc)= 4.68 |
| Crystal System: |
Tetragonal - Dipyramidal H-M Symbol (4/m) Space Group: P 4/n |
| X Ray Diffraction: |
By Intensity(I/Io): 3.08(1), 1.888(0.8), 3.16(0.7), |
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Physical Properties of Polhemusite
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| Cleavage: |
{???} Indistinct |
| Color: |
Black. |
| Density: |
4.93 |
| Hardness: |
4.5 - Between Fluorite and Apatite |
| Luster: |
Adamantine - Resinous |
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Optical Properties of Polhemusite
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| RL Anisotrophism: |
Moderate in air, strong in oil. |
| RL Color: |
Gray, with intense red internal reflections. |
| RL Pleochroism: |
Very slightly brownish gray to slightly lavender-gray. |
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Calculated Properties of Polhemusite
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| Electron Density: |
Bulk Density (Electron Density)=4.17 gm/cc
note: Specific Gravity of Polhemusite =4.68 gm/cc.
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| Fermion Index: |
Fermion Index = 0.13
Boson Index = 0.87 |
| Photoelectric: |
PEPolhemusite = 628.11 barns/electron
U=PEPolhemusite x rElectron Density=2,620.28 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Polhemusite is Not Radioactive |
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Polhemusite Classification
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| Dana Class: |
02.08.03.01 (02)Sulfides - Including Selenides and Tellurides |
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(02.08)where Am Bn Xp, with (m+n):p=1:1 |
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(02.08.03)Dana Group |
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02.08.03.01 Polhemusite (Zn,Hg)S P 4/n 4/m |
| Strunz Class: |
02.CB.05c 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.C - Metal Sulfides, M:S = 1:1 (and similar) |
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02.CB -With Zn, Fe, Cu, Ag, Au, etc |
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02.CB.05c Polhemusite (Zn,Hg)S P 4/n 4/m |
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Other Polhemusite Information
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| References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Polhemusite :
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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Polhemusite
(Zn,Hg)S
Dana No: 02.08.03.01 Strunz No: 02.CB.05c
Locality:
Notes:
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