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![Mineralogy Database Mineralogy Database](/images/Hedyphane_Crystal.gif) |
Coyoteite Mineral Data
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General Coyoteite Information
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Chemical Formula: |
NaFe3S5•2(H2O) |
Composition: |
Molecular Weight = 386.89 gm |
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Sodium 5.94 % Na |
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Iron 43.30 % Fe |
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Hydrogen 1.04 % H |
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Sulfur 41.44 % S |
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Oxygen 8.27 % O |
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______ |
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100.00 % |
Empirical Formula: |
NaFe2+3S5•2(H2O) |
Environment: |
Mafic alkalic diatreme. |
IMA Status: |
Approved IMA 1983 |
Locality: |
Coyote Peak diatreme, 16 miles SW of Orick, Humboldt Co. California. Link to MinDat.org Location Data. |
Name Origin: |
Named after it's locality. |
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Coyoteite Image |
Images:
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Coyoteite
Comments: Black and white image of a polished section showing coyoteite crystals showing chevron pattern developed by opposing cleavage sets. Continuous parallel lines are polishing scratches. (AmMin 68:252).
Location: Coyote Peak mafic alkalic diatreme near Orick, Humboldt County, California. USA.
Scale: Image size 0.26 mm.
© American Mineralogist |
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Coyoteite Crystallography
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Axial Ratios: |
a:b:c =0.7498:1:0.6518 |
Cell Dimensions: |
a = 7.409, b = 9.881, c = 6.441, Z = 2; alpha = 100.417°, beta = 104.617°, gamma = 81.483° V = 443.80 Den(Calc)= 2.90 |
Crystal System: |
Triclinic Space Group: P1,P 1 |
X Ray Diffraction: |
By Intensity(I/Io): 5.12(1), 7.13(0.9), 3.028(0.8), |
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Physical Properties of Coyoteite
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Cleavage: |
{111} Perfect, {111} Perfect, {111} Perfect |
Color: |
Black. |
Density: |
2.879 |
Diaphaneity: |
Opaque |
Habit: |
Irregular Grains - Occurs as splotchy, anhedral crystals forming inclusions in other minerals or rocks. |
Hardness: |
1.5 - Between Talc and Gypsum |
Luster: |
Metallic |
Magnetism: |
Moderately Magnetic |
Streak: |
black |
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Optical Properties of Coyoteite
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RL Anisotrophism: |
Strong, colors from gray to dull golden orange. |
RL Color: |
Pale brownish gray with a pink tint. |
RL Pleochroism: |
Faint, from gray to pink. |
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Calculated Properties of Coyoteite
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Electron Density: |
Bulk Density (Electron Density)=2.81 gm/cc note: Specific Gravity of Coyoteite =2.88 gm/cc. |
Fermion Index: |
Fermion Index = 0.01 Boson Index = 0.99 |
Photoelectric: |
PECoyoteite = 15.21 barns/electron U=PECoyoteite x rElectron Density= 42.81 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Coyoteite is Not Radioactive |
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Coyoteite Classification
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Dana Class: |
02.14.06.01 (02)Sulfides - Including Selenides and Tellurides |
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(02.14)(Hydroxyl or Hydrated) |
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(02.14.06)Dana Group |
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02.14.06.01 Coyoteite NaFe3S5•2(H2O) P1,P 1 Tri |
Strunz Class: |
02.FD.25 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.F - Sulfides of Arsenic, Alkalies; Sulfides with Halide, Oxide, Hydroxide, H2O |
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02.FD -With O, OH, H2O |
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02.FD.25 Coyoteite NaFe3S5•2(H2O) P1,P 1 Tri |
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Other Coyoteite Information
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References: |
NAME( MinRec) PHYS. PROP.(Dana8) OPTIC PROP.(AntBidBlaNic1) |
See Also: |
Links to other databases for Coyoteite :
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 Coyoteite Specimen Label here :
Coyoteite
NaFe3S5•2(H2O)
Dana No: 02.14.06.01 Strunz No: 02.FD.25
Locality:
Notes:
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