Coyoteite
A valid IMA mineral species
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About Coyoteite
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 Identifiers
Mindat ID:
1146
Long-form identifier:
mindat:1:1:1146:0
GUID
(UUID V4):
(UUID V4):
6641bf95-3157-43f5-a122-8c40e7b6f5b4
IMA Classification of Coyoteite
Approved
Classification of Coyoteite
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
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
2.14.6.1
2 : SULFIDES
14 : Hydroxysulfides and Hydrated Sulfides
2 : SULFIDES
14 : Hydroxysulfides and Hydrated Sulfides
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
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 Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Coy | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Coyoteite
Metallic
Transparency:
Opaque
Colour:
Black to pale brownish grey
Streak:
Black
Hardness:
1½ on Mohs scale
Cleavage:
Perfect
{111}
{111}
Density:
2.5 - 2.6 g/cm3 (Measured) 2.879 g/cm3 (Calculated)
Optical Data of Coyoteite
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 Coyoteite
Mindat Formula:
NaFe3S5 · 2H2O
Crystallography of Coyoteite
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°
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 Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
5.12 Å | (100) |
7.13 Å | (90) |
3.023 Å | (80) |
3.080 Å | (70) |
9.6 Å | (60) |
5.60 Å | (60) |
3.910 Å | (50) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
High-𝑇 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 Coyoteite
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:
Reference:
Erd, R.C. and G.K. Czamanske (1983): Orickite and coyoteite, two new sulfide minerals from Coyote Peak, Humboldt Co., California. Am. Mineral., 68, 245–254.
Synonyms of Coyoteite
Other Language Names for Coyoteite
Common Associates
Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
2.FD. | Ferrovalleriite | 2(Fe,Cu)S · 1.5Fe(OH)2 |
2.FD.05 | Kermesite | Sb2S2O |
2.FD.10 | Viaeneite | (Fe,Pb)4S8O |
2.FD.20 | Erdite | NaFeS2 · 2H2O |
2.FD.30 | Haapalaite | (Fe2+,Ni)2(Mg,Fe2+)1.61S2(OH)3.22 |
2.FD.30 | Valleriite | (Fe2+,Cu)4(Mg,Al)3S4(OH,O)6 |
2.FD.30 | Yushkinite | (Mg,Al)V4+S2(OH)2 |
2.FD.30 | Ekplexite | (Nb,Mo,W)S2 · (Mg1-xAlx)(OH)2+x |
2.FD.35 | Tochilinite | Fe2+5-6(Mg,Fe2+)5S6(OH)10 |
2.FD.35 | Ferrotochilinite | Fe2+6(Fe2+,Mg)5S6(OH)10 |
2.FD.35 | Kaskasite | (Mo,Nb)S2 · (Mg1-xAlx)(OH)2+x |
2.FD.35 | Manganokaskasite | (Mo,Nb)S2 · (Mn1-xAlx)(OH)2+x |
2.FD.40 | Wilhelmramsayite | Cu3FeS3 · 2H2O |
2.FD.45 | Vyalsovite | FeCaAlS(OH)5 |
2.FD.50 | Bazhenovite | Ca8S2(S3)(S2O3)(OH)12 · 20H2O |
2.FD.55 | UM2004-56-OS:BiCuPb | PbCu4Bi4S2(O,OH,H2O)16 (?) |
Other Information
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 Coyoteite
mindat.org URL:
https://www.mindat.org/min-1146.html
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References for Coyoteite
Reference List:
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
Localities for Coyoteite
Locality List
- 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.
All localities listed without proper references should be considered as questionable.
USA (TL) | |
|
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Coyote Peak, Coastal Range, Humboldt County, California, USA