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![Mineralogy Database Mineralogy Database](/images/Hedyphane_Crystal.gif) |
Mattagamite Mineral Data
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General Mattagamite Information
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Chemical Formula: |
CoTe2 |
Composition: |
Molecular Weight = 314.13 gm |
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Cobalt 18.76 % Co |
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Tellurium 81.24 % Te |
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______ |
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100.00 % |
Empirical Formula: |
CoTe2 |
Environment: |
In a small telluride zone in a massive zinc-rich stratiform deposit in Archaen volcanics. |
IMA Status: |
Approved IMA 1973 |
Locality: |
Mattagami Lake mines, Mattagami, Galinee Township, Abitibi Co., Quebec, Canada. Link to MinDat.org Location Data. |
Name Origin: |
Named for the locality. |
Name Pronunciation: |
Mattagamite + Pronunciation |
Synonym: |
ICSD 25678 |
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IMA1972-003 |
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PDF 11-553 |
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Mattagamite Image |
Images:
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Mattagamite Crystallography
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Axial Ratios: |
a:b:c =0.8415:1:0.6164 |
Cell Dimensions: |
a = 5.31, b = 6.31, c = 3.89, Z = 2; V = 130.34 Den(Calc)= 8.00 |
Crystal System: |
Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pnnm |
X Ray Diffraction: |
By Intensity(I/Io): 2.805(1), 2.703(0.8), 2.066(0.6), |
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Physical Properties of Mattagamite
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Color: |
Violet, Violet gray. |
Diaphaneity: |
Opaque |
Habit: |
Inclusions - Generally found as inclusions in other minerals. |
Habit: |
Twinning Common - Crystals are usually twinned. |
Hardness: |
5.5 - Knife Blade |
Luster: |
Metallic |
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Optical Properties of Mattagamite
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RL Anisotrophism: |
Weak, pinkish violet to grayish violet. |
RL Color: |
Violet. |
RL Pleochroism: |
Weak, colors from pink to cream. |
Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Mattagamite in Air
λ |
R1 |
R2 |
![](../images/Reflect_scale_v.gif) |
∑ R1(λ) |
∑ R2(λ) |
400 nm |
50.20 |
62.20 |
![](../images/400nm.BMP)
![](../images/400nm.BMP) |
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420 nm |
51.00 |
60.30 |
![](../images/420nm.BMP)
![](../images/420nm.BMP) |
440 nm |
51.80 |
58.40 |
![](../images/440nm.BMP)
![](../images/440nm.BMP) |
460 nm |
51.00 |
56.60 |
![](../images/460nm.BMP)
![](../images/460nm.BMP) |
480 nm |
49.90 |
55.60 |
![](../images/480nm.BMP)
![](../images/480nm.BMP) |
500 nm |
48.70 |
54.70 |
![](../images/500nm.BMP)
![](../images/500nm.BMP) |
520 nm |
48.20 |
54.20 |
![](../images/520nm.BMP)
![](../images/520nm.BMP) |
540 nm |
47.90 |
53.90 |
![](../images/540nm.BMP)
![](../images/540nm.BMP) |
560 nm |
47.80 |
53.90 |
![](../images/560nm.BMP)
![](../images/560nm.BMP) |
580 nm |
47.70 |
54.00 |
![](../images/580nm.BMP)
![](../images/580nm.BMP) |
600 nm |
47.80 |
54.30 |
![](../images/600nm.BMP)
![](../images/600nm.BMP) |
620 nm |
48.00 |
54.70 |
![](../images/620nm.BMP)
![](../images/620nm.BMP) |
640 nm |
48.30 |
55.20 |
![](../images/640nm.BMP)
![](../images/640nm.BMP) |
660 nm |
48.60 |
55.60 |
![](../images/660nm.BMP)
![](../images/660nm.BMP) |
680 nm |
48.90 |
56.30 |
![](../images/680nm.BMP)
![](../images/680nm.BMP) |
700 nm |
49.10 |
56.90 |
![](../images/700nm.BMP)
![](../images/700nm.BMP) |
Calculated Relative Intensity Colors of Mattagamite in Air
Relative Intensity |
0% |
20% |
40% |
60% |
80% |
100% |
120% |
140% |
160% |
180% |
190% |
R1 |
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R2 |
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Calculated Properties of Mattagamite
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Electron Density: |
Bulk Density (Electron Density)=6.67 gm/cc note: Specific Gravity of Mattagamite =8.00 gm/cc. |
Fermion Index: |
Fermion Index = 0.06 Boson Index = 0.94 |
Photoelectric: |
PEMattagamite = 306.08 barns/electron U=PEMattagamite x rElectron Density=2,042.28 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Mattagamite is Not Radioactive |
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Mattagamite Classification
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Dana Class: |
02.12.02.05 (02)Sulfides - Including Selenides and Tellurides |
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(02.12)where Am Bn Xp, with (m+n):p=1:2 |
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(02.12.02)Marcasite Group (Orthorhombic: Pnnm) |
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02.12.02.01 Marcasite FeS2 Pnnm 2/m 2/m 2/m |
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02.12.02.02 Ferroselite FeSe2 Pnnm 2/m 2/m 2/m |
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02.12.02.03 Frohbergite FeTe2 Pnnm 2/m 2/m 2/m |
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02.12.02.04 Hastite? CoSe2 Pnnm 2/m 2/m 2/m |
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02.12.02.05 Mattagamite CoTe2 Pnnm 2/m 2/m 2/m |
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02.12.02.06 Kullerudite NiSe2 Pnnm 2/m 2/m 2/m |
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02.12.02.07 Omeiite (Os,Ru)As2 Pnnm 2/m 2/m 2/m |
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02.12.02.08 Anduoite (Ru,Os)As2 Pnnm 2/m 2/m 2/m |
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02.12.02.09 Lollingite FeAs2 Pnnm 2/m 2/m 2/m |
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02.12.02.10 Seinajokite (Fe,Ni)(Sb,As)2 Pnnm 2/m 2/m 2/m |
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02.12.02.11 Safflorite (Co,Fe)As2 Pnnm 2/m 2/m 2/m |
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02.12.02.12 Rammelsbergite NiAs2 Pnnm 2/m 2/m 2/m |
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02.12.02.13 Nisbite NiSb2 Pnnm 2/m 2/m 2/m |
Strunz Class: |
02.EB.10a 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.E - Metal Sulfides, M:S � 1:2 |
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02.EB -M:S = 1:2, with Fe, Co, Ni, PGE, etc. |
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02.EB.10a Frohbergite FeTe2 Pnnm 2/m 2/m 2/m |
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02.EB.10a Hastite? CoSe2 Pnnm 2/m 2/m 2/m |
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02.EB.10a Ferroselite FeSe2 Pnnm 2/m 2/m 2/m |
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02.EB.10a Kullerudite NiSe2 Pnnm 2/m 2/m 2/m |
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02.EB.10a Mattagamite CoTe2 Pnnm 2/m 2/m 2/m |
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02.EB.10a Marcasite FeS2 Pnnm 2/m 2/m 2/m |
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Other Mattagamite 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 Mattagamite :
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 Mattagamite Specimen Label here :
Mattagamite
CoTe2
Dana No: 02.12.02.05 Strunz No: 02.EB.10a
Locality:
Notes:
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