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Athabascaite Mineral Data
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General Athabascaite Information
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 Chemical Formula: |
Cu5Se4 |
| Composition: |
Molecular Weight = 633.57 gm |
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Copper 50.15 % Cu |
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Selenium 49.85 % Se |
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______ |
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100.00 % |
| Empirical Formula: |
Cu5Se4 |
| Environment: |
As inclusions and replacements of unamgite. |
| IMA Status: |
Approved IMA 1969 |
| Locality: |
Martin Lake mine, Uranium City, Lake Athabasca, SK, Canada. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the locality. |
| Name Pronunciation: |
Athabascaite + Pronunciation  |
| Synonym: |
IMA1969-022 |
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Athabascaite Image |
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Images:
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Athabascaite Crystallography
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| Axial Ratios: |
a:b:c =0.6866:1:0.5375 |
| Cell Dimensions: |
a = 8.227, b = 11.982, c = 6.441, Z = 4; V = 634.93 Den(Calc)= 6.63 |
| Crystal System: |
Orthorhombic Space Group: Unk |
| X Ray Diffraction: |
By Intensity(I/Io): 3.235(1), 1.997(0.8), 3.015(0.6), |
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Physical Properties of Athabascaite
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| Color: |
Blue gray, Gray white. |
| Diaphaneity: |
Opaque |
| Habit: |
Anhedral Grains - Granular minerals without the expression of crystal shapes |
| Habit: |
Microscopic Crystals - Crystals visible only with microscopes. |
| Hardness: |
2.5-3 - Finger Nail-Calcite |
| Luster: |
Metallic |
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Optical Properties of Athabascaite
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| RL Anisotrophism: |
Strong, creamy white to dark blue. |
| RL Pleochroism: |
Distinct, light gray to blue-gray. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Athabascaite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
21.20 |
25.10 |
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| 420 nm |
19.90 |
25.20 |
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| 440 nm |
19.60 |
25.30 |
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| 460 nm |
19.30 |
25.40 |
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| 480 nm |
19.00 |
25.50 |
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| 500 nm |
18.60 |
25.60 |
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| 520 nm |
18.30 |
25.60 |
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| 540 nm |
17.80 |
25.50 |
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| 560 nm |
17.40 |
25.40 |
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| 580 nm |
16.90 |
25.10 |
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| 600 nm |
16.30 |
25.00 |
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| 620 nm |
15.50 |
24.50 |
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| 640 nm |
15.00 |
24.20 |
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| 660 nm |
14.20 |
23.70 |
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| 680 nm |
13.40 |
23.10 |
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| 700 nm |
12.50 |
22.40 |
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Calculated Relative Intensity Colors of Athabascaite in Air
Relative
Intensity |
0% |
60% |
100% |
120% |
180% |
240% |
300% |
360% |
420% |
480% |
540% |
560% |
| R1 |
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| R2 |
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Calculated Properties of Athabascaite
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| Electron Density: |
Bulk Density (Electron Density)=5.88 gm/cc
note: Specific Gravity of Athabascaite =6.63 gm/cc.
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| Fermion Index: |
Fermion Index = 0.03
Boson Index = 0.97 |
| Photoelectric: |
PEAthabascaite = 63.18 barns/electron
U=PEAthabascaite x rElectron Density= 371.57 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Athabascaite is Not Radioactive |
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Athabascaite Classification
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| Dana Class: |
02.16.17.01 (02)Sulfides - Including Selenides and Tellurides |
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(02.16)with miscellaneous formulae |
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(02.16.17)Dana Group |
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02.16.17.01 Athabascaite Cu5Se4 Unk Ortho |
| Strunz Class: |
02.BA.15d 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.B - Metal Sulfides, M:S > 1:1 (mainly 2:1) |
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02.BA -With Cu, Ag, Au |
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02.BA.15d Athabascaite Cu5Se4 Unk Ortho |
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Other Athabascaite Information
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| References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Athabascaite :
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 Athabascaite Specimen Label here :
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Athabascaite
Cu5Se4
Dana No: 02.16.17.01 Strunz No: 02.BA.15d
Locality:
Notes:
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