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Coyoteite

A valid IMA mineral species
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09695490017271922281538.jpg
Coyoteite, etc.

Coyote Peak, Humboldt County, California, USA
02160000017271922312464.jpg
Coyoteite, etc.

Coyote Peak, Humboldt County, California, USA
09695490017271922281538.jpg
Coyoteite, etc.

Coyote Peak, Humboldt County, California, USA
02160000017271922312464.jpg
Coyoteite, etc.

Coyote Peak, Humboldt County, California, USA
09695490017271922281538.jpg
Coyoteite, etc.

Coyote Peak, Humboldt County, California, USA
02160000017271922312464.jpg
Coyoteite, etc.

Coyote Peak, Humboldt County, California, USA
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About CoyoteiteHide

Formula:
NaFe3S5 · 2H2O
Colour:
Black to pale brownish grey
Lustre:
Metallic
Hardness:
1½
Specific Gravity:
2.5 - 2.6
Crystal System:
Triclinic
Name:
Named from type locality
This page provides mineralogical data about Coyoteite.


Unique IdentifiersHide

Mindat ID:
1146
Long-form identifier:
mindat:1:1:1146:0

IMA Classification of CoyoteiteHide

Classification of CoyoteiteHide

Strunz-mindat (2026):
2.FD.25

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
F : Sulfides of arsenic, alkalies; sulfides with halide, oxide, hydroxide, H2O
D : With O, OH, H2O
Dana 8th ed.:
2.14.6.1

2 : SULFIDES
14 : Hydroxysulfides and Hydrated Sulfides
Hey's CIM Ref.:
3.0.2

3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
0 : Sulphides etc. of the alkalis

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
CoyIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of CoyoteiteHide

Lustre:
Metallic
Transparency:
Opaque
Colour:
Black to pale brownish grey
Streak:
Black
Hardness:
1½ on Mohs scale
Cleavage:
Perfect
{111}
Density:
2.5 - 2.6 g/cm3 (Measured)    2.879 g/cm3 (Calculated)

Optical Data of CoyoteiteHide

Anisotropism:
Strong - gray to dull golden orange
Colour in reflected light:
pale brownish gray with a pink tint.
Internal Reflections:
None
Pleochroism:
Visible
Comments:
grayer to pinker

Chemistry of CoyoteiteHide

Mindat Formula:
NaFe3S5 · 2H2O
Element Weights:
Element% weight
Fe43.304 %
S41.441 %
O8.271 %
Na5.942 %
H1.042 %

Calculated from ideal end-member formula.
Fe
S
O
Na
H
Elements listed:
Fe, H, Na, O, S - search for minerals with similar chemistry

Crystallography of CoyoteiteHide

Crystal System:
Triclinic
Cell Parameters:
a = 7.4 Å, b = 9.88 Å, c = 6.44 Å
α = 100.42°, β = 104.62°, γ = 81.49°
Ratio:
a:b:c = 0.749 : 1 : 0.652
Unit Cell V:
445.48 ų (Calculated from Unit Cell)
Z:
2
Comment:
Point Group: 1 or 1. ; Space Group: P1 or P1.

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
High-? alteration and/or metamorphism
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12])
Stage 4b: Highly evolved igneous rocks>3.0
35 : Ultra-alkali and agpaitic igneous rocks

Type Occurrence of CoyoteiteHide

Type Locality:
ⓘ Coyote Peak, Humboldt County, California, USA
General Appearance of Type Material:
As grains, up to 0.4 mm, showing typically a chevron pattern in polished section
Place of Conservation of Type Material:
National Museum of Natural History, Washington, D.C., USA, 150335.
Geological Setting of Type Material:
Pegmatic "clots"
Associated Minerals at Type Locality:
AegirineBartoniteCalciteCancriniteDjerfisherite
ErditeMagnetiteNatrolitePectolitePhlogopite
PyrrhotiteRasvumiteSchorlomiteSodalite
Reference:
Erd, Richard C.; Czamanske, Gerald K. (1983) Orickite and coyoteite, two new sulfide minerals from Coyote Peak, Humboldt County, California. American Mineralogist, 68 (1-2). 245-254

Synonyms of CoyoteiteHide

Other Language Names for CoyoteiteHide

Dutch:Coyoteiet
German:Coyoteit
Spanish:Coyoteita

Common AssociatesHide

Associations Based on Photo Data:
3 photos of Coyoteite associated with BartoniteK6Fe20S26S
3 photos of Coyoteite associated with AegirineNaFe3+Si2O6
3 photos of Coyoteite associated with PyrrhotiteFe1-xS
3 photos of Coyoteite associated with PhlogopiteKMg3(AlSi3O10)(OH)2
3 photos of Coyoteite associated with NephelineNa3K(Al4Si4O16)
3 photos of Coyoteite associated with Orickite2CuFeS2 · H2O
2 photos of Coyoteite associated with ErditeNaFeS2 · 2H2O
1 photo of Coyoteite associated with RasvumiteKFe2S3
1 photo of Coyoteite associated with SchorlomiteCa3Ti2(SiO4)(Fe3+O4)2

Related Minerals - Strunz-mindat GroupingHide

2.FD.Ferrovalleriite2(Fe,Cu)S · 1.5Fe(OH)2 Trig.
2.FD.05KermesiteSb2S2OTric. 1 : P1
2.FD.10Viaeneite(Fe,Pb)4S8OMon.
2.FD.20ErditeNaFeS2 · 2H2OMon. 2/m : B2/b
2.FD.30Yushkinite(Mg,Al)V4+S2(OH)2Trig. 3m(32/m) : P3m1
2.FD.30Valleriite(Fe2+,Cu)4(Mg,Al)3S4(OH,O)6Trig.
2.FD.30Ekplexite(Nb,Mo,W)S2 · (Mg1-xAlx)(OH)2+xTrig.
2.FD.30Haapalaite(Fe2+,Ni)2(Mg,Fe2+)1.61S2(OH)3.22Hex.
2.FD.35Kaskasite(Mo,Nb)S2 · (Mg1-xAlx)(OH)2+xTrig.
2.FD.35Manganokaskasite(Mo,Nb)S2 · (Mn1-xAlx)(OH)2+xTrig.
2.FD.35TochiliniteFe2+5-6(Mg,Fe2+)5S6(OH)10Mon.
2.FD.35FerrotochiliniteFe2+6(Fe2+,Mg)5S6(OH)10Mon.
2.FD.40WilhelmramsayiteCu3FeS3 · 2H2OOrth. mmm(2/m2/m2/m) : Pmmm
2.FD.45VyalsoviteFeCaAlS(OH)5Mon. m : Bm
2.FD.50BazhenoviteCa8S2(S3)(S2O3)(OH)12 · 20H2OMon. 2/m : P21/b
2.FD.55'UM2004-56-OS:BiCuPb'PbCu4Bi4S2(O,OH,H2O)16 (?)Tet.

Other InformationHide

Notes:
moderately magnetic
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for CoyoteiteHide

References for CoyoteiteHide

Localities for CoyoteiteHide

Showing 1 localities.

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
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Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
USA (TL)
 
  • California
    • Humboldt County
Erd et al. (1983) +3 other references
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