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Eskimoite Mineral Data
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General Eskimoite Information
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 Chemical Formula: |
Ag7Pb10Bi15S36 |
| Composition: |
Molecular Weight = 7,116.16 gm |
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Silver 10.61 % Ag |
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Bismuth 44.05 % Bi |
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Lead 29.12 % Pb |
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Sulfur 16.22 % S |
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______ |
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100.00 % |
| Empirical Formula: |
Ag7Pb10Bi15S36 |
| Environment: |
In a cryolite deposit. |
| IMA Status: |
Approved IMA 1977 |
| Locality: |
Ivigutut, Greenland. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the Eskimos, the natives of Greenland. |
| Name Pronunciation: |
Eskimoite + Pronunciation  |
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Eskimoite Image |
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Images:
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Eskimoite Crystallography
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| Axial Ratios: |
a:b:c =7.3643:1:3.2826 |
| Cell Dimensions: |
a = 30.194, b = 4.1, c = 13.459, Z = 1; beta = 93.35° V = 1,663.32 Den(Calc)= 7.10 |
| Crystal System: |
Monoclinic - Domatic H-M Symbol (m) Space Group: Am |
| X Ray Diffraction: |
By Intensity(I/Io): 3.36(1), 2.87(0.6), 2.96(0.5), |
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Physical Properties of Eskimoite
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| Color: |
Black, Gray. |
| Density: |
7.1 |
| Diaphaneity: |
Opaque |
| Habit: |
Granular - Generally occurs as anhedral to subhedral crystals in matrix. |
| Habit: |
Lamellar - Thin laminae producing a lamellar structure. |
| Hardness: |
4 - Fluorite |
| Luster: |
Metallic |
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Optical Properties of Eskimoite
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| RL Anisotrophism: |
Distinct to strong, light gray to steel bluish black. |
| RL Color: |
Galena white. |
| RL Pleochroism: |
Absent in air, absent to weak in oil. |
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Calculated Properties of Eskimoite
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| Electron Density: |
Bulk Density (Electron Density)=5.93 gm/cc
note: Specific Gravity of Eskimoite =7.10 gm/cc.
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| Fermion Index: |
Fermion Index = 0.06
Boson Index = 0.94 |
| Photoelectric: |
PEEskimoite =1,414.72 barns/electron
U=PEEskimoite x rElectron Density=8,384.38 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Eskimoite is Not Radioactive |
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Eskimoite Classification
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| Dana Class: |
03.06.02.01 (03)Sulfides - Sulfosalts |
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(03.06)where 2 < z/y < 2.49 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals |
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(03.06.02)Dana Group |
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03.06.02.01 Eskimoite Ag7Pb10Bi15S36 Am m |
| Strunz Class: |
02.JB.40b 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.J - Sulfosalts of PbS Archetype |
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02.JB -Galena derivatives, with Pb |
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02.JB.40b Aschamalmite Pb6Bi2S9 C 2/m 2/m |
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02.JB.40b Eskimoite Ag7Pb10Bi15S36 Am m |
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02.JB.40b Heyrovskyite Pb10AgBi5S18 C mcm 2/m 2/m 2/m |
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Other Eskimoite Information
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| References: |
NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Eskimoite :
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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Print or Cut-and-Paste your Eskimoite Specimen Label here :
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Eskimoite
Ag7Pb10Bi15S36
Dana No: 03.06.02.01 Strunz No: 02.JB.40b
Locality:
Notes:
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