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Coyoteite

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Coyote Peak, Orick, Orick District, Humboldt Co., California, USA
© 2008, JGW

Formula:
NaFe
 
3
S
 
5
·2H
 
2
O
System:TriclinicColour:Black to pale brownish ...
Lustre:MetallicHardness:1½
Name: Named from type locality
This page provides mineralogical data about Coyoteite.

Classification of Coyoteite

IMA status:Approved
Strunz 8th edition ID:2/F.09-20
Nickel-Strunz 10th (pending) edition ID: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 edition ID: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
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Type Occurrence of Coyoteite

Type Locality:Coyote Peak, Orick, Orick District, Humboldt Co., California, USA
Year of Discovery:1983
Geological Setting of type material:Pegmatic "clots"

Physical Properties of Coyoteite

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

Crystallography of Coyoteite

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

Optical Data of Coyoteite

Type:Anisotropic
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

Chemical Properties of Coyoteite

Formula:
NaFe
 
3
S
 
5
·2H
 
2
O
Essential elements:Fe, H, Na, O, S
All elements listed in formula:Fe, H, Na, O, S

Relationship of Coyoteite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
2.FD.UKI-2004-(OS:BiCuPb)
PbCu
 
4
Bi
 
4
S
 
2
O
 
16
 (?)
2.FD.05Kermesite
Sb
 
2
S
 
2
O
2.FD.10Viaeneite
(Fe,Pb)
 
4
S
 
8
O
2.FD.20Erdite
NaFeS
 
2
·2H
 
2
O
2.FD.30Haapalaite
(Fe
2+
 
,Ni)
 
2
(Mg,Fe
2+
 
)
 
1.61
[(OH)
 
3.22
|S
 
2
]
2.FD.30Valleriite
(Fe
2+
 
,Cu)
 
4
(Mg,Al)
 
3
[(OH,O)
 
6
|S
 
4
]
2.FD.30Yushkinite
(Mg,Al)[(OH)
 
2
 (VS
 
2
)
2.FD.35Tochilinite
Fe
2+
5-6
(Mg,Fe
2+
 
)
 
5
[(OH)
 
10
|S
 
6
]
2.FD.40Wilhelmramsayite
Cu
 
3
FeS
 
3
·2H
 
2
O
2.FD.45Vyalsovite
FeCaAl[(OH)
 
5
|S]
2.FD.50Bazhenovite
Ca
 
8
[(OH)
 
12
|S
 
2
O
 
3
|S
 
5
] · 20H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
3.0.1Erdite
NaFeS
 
2
·2H
 
2
O
3.0.3Chvilevaite
Na(Cu,Fe,Zn)
 
2
S
 
4
3.0.4Rasvumite
KFe
 
2
S
 
3
3.0.5Bartonite
K
 
3
Fe
 
10
S
 
14
3.0.6Murunskite
K
 
2
Cu
 
3
FeS
 
4

Other Names for Coyoteite

Synonyms:
IMA1978-042
Other Languages:
German:Coyoteit
Spanish:Coyoteita

Other Information

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

References for Coyoteite

Reference List:Erd, R.C. & G.K. Czamanske (1983), Orickite and coyoteite, two new sulfide minerals: American Mineralogist: 68: 245-254.


Internet Links for Coyoteite

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  • Coyoteite details from Handbook of Mineralogy (PDF)
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    Localities for Coyoteite

    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    USA
     
    • California
      • Humboldt Co.
        • Orick District
          • Orick
    		American Mineralogist: (1983) 68: 245-254.
    Mineral and/or Locality
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