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Potarite Mineral Data
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General Potarite Information
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 Chemical Formula: |
PdHg |
| Composition: |
Molecular Weight = 307.01 gm |
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Mercury 65.34 % Hg |
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Palladium 34.66 % Pd |
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______ |
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100.00 % |
| Empirical Formula: |
PdHg |
| Environment: |
Residual mineral found in diamond washings. |
| IMA Status: |
Valid Species (Pre-IMA) 1926 |
| Locality: |
Potaro River area, Guyana. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the locality. |
| Name Pronunciation: |
Potarite  |
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Potarite Image |
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Images:
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Potarite
Comments: BSE probe image showing a composite grain of potarite (PdHg), and a PtNiFeCu alloy in an intertitial site and filling a fracture in a chromite grain (Chr).
Location: Southern Quebec Ophiolite Belt, Thetford Mines ophiolitic complex, Canada.
Scale: See Image.
© National Resouces of Canada |
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Images:
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Potarite
Comments: Potarite grains in a geletin capsule.
Location: Potaro River, Kangaruma District, Guyana.
Scale: Sample Size 4.1 x 2.2 x 1.9 cm.
© Rob Lavinsky |
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Potarite Crystallography
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| Axial Ratios: |
a:c = 1:1.22715 |
| Cell Dimensions: |
a = 3.02, c = 3.706, Z = 1; V = 33.80 Den(Calc)= 15.08 |
| Crystal System: |
Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: P 4/mmm |
| X Ray Diffraction: |
By Intensity(I/Io): 2.34(1), 1.274(0.8), 1.402(0.55), |
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Physical Properties of Potarite
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| Cleavage: |
None |
| Color: |
Silver white. |
| Density: |
14.88 |
| Diaphaneity: |
Opaque |
| Fracture: |
Brittle - Generally displayed by glasses and most non-metallic minerals. |
| Habit: |
Nuggets - Irregular lumps produced by stream transport of malleable metals. |
| Hardness: |
3.5 - Copper Penny |
| Luster: |
Metallic |
| Streak: |
metallic |
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Optical Properties of Potarite
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| RL Anisotrophism: |
Noted on inclusions, brown with an orange tinge.. |
| RL Color: |
Cream to creamish white. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Potarite in Air
| λ |
R |
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∑ R(λ) |
| 440 nm |
57.50 |
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| 460 nm |
58.10 |
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| 480 nm |
58.40 |
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| 500 nm |
59.00 |
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| 520 nm |
60.00 |
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| 540 nm |
61.00 |
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| 560 nm |
61.70 |
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| 580 nm |
62.40 |
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| 600 nm |
63.00 |
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| 620 nm |
63.80 |
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| 640 nm |
64.50 |
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| 660 nm |
65.40 |
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| 680 nm |
66.00 |
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| 700 nm |
66.80 |
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Calculated Relative Intensity Colors of Potarite in Air
Relative
Intensity |
0% |
20% |
40% |
60% |
80% |
100% |
120% |
140% |
160% |
| R |
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Calculated Properties of Potarite
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| Electron Density: |
Bulk Density (Electron Density)=12.4 gm/cc
note: Specific Gravity of Potarite =15.1 gm/cc.
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| Fermion Index: |
Fermion Index = 0.27
Boson Index = 0.73 |
| Photoelectric: |
PEPotarite =1,215.00 barns/electron
U=PEPotarite x rElectron Density=15039.17 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Potarite is Not Radioactive |
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Potarite Classification
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| Dana Class: |
01.02.04.04 (01)Native Elements |
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(01.02)with platinum group metals and alloys |
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(01.02.04)Tetraferroplatinum group (Space Group P4/mmm) |
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01.02.04.01 Tetraferroplatinum PtFe P 4/mmm 4/m 2/m 2/m |
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01.02.04.02 Tulameenite Pt2FeCu P 4/mm 4/m 2/m 2/m |
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01.02.04.03 Ferronickelplatinum Pt2FeNi P 4/mmm 4/m 2/m 2/m |
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01.02.04.04 Potarite PdHg P 4/mmm 4/m 2/m 2/m |
| Strunz Class: |
01.AD.25 01 - ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides) |
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01.A - Metals and Intermetallic Alloys |
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01.AD -Mercury-amalgam family |
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01.AD.25 Potarite PdHg P 4/mmm 4/m 2/m 2/m |
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Other Potarite 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 Potarite :
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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Potarite
PdHg
Dana No: 01.02.04.04 Strunz No: 01.AD.25
Locality:
Notes:
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