Global InformationCoyoteite information
| Coyoteite | |
|---|---|
| General | |
| Category | Sulfide mineral |
| Formula (repeating unit) | (NaFe3S5·2H2O) |
| IMA symbol | Coy[1] |
| Strunz classification | 2.FD.25 |
| Dana classification | 02.14.06.01 |
| Crystal system | Triclinic Unknown space group |
| Identification | |
| Color | black |
| Crystal habit | Irregular grains - occurs as splotchy, anhedral crystals forming inclusions in other minerals |
| Cleavage | {111} Perfect |
| Mohs scale hardness | 1-1.5 |
| Luster | Metallic |
| Streak | black |
| Diaphaneity | Opaque |
| Specific gravity | 2.5 - 2.62 measured; 2.879 calculated |
| Pleochroism | Faint, from gray to pink |
| Other characteristics | Moderately magnetic |
| References | [2][3][4][5] |
Coyoteite is a hydrated sodium iron sulfide mineral. The mineral was named coyoteite after Coyote Peak near Orick, California, where it was discovered (along with another rare mineral, orickite).[2]
This mineral is unstable under normal atmospheric conditions, making it rare at the surface. The mineral was first described in a petrographic study of a sample of a mafic diatreme at Coyote Peak. The largest piece of coyoteite found on that specimen has the dimensions of 0.2 × 0.4 mm.[2]
- ^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
- ^ a b c Erd, Richard C.; Czamanske, Gerald K. (1983). "Orickite and coyoteite, two new sulfide minerals from Coyote Peak, HunboldtCountry, California" (PDF). American Mineralogist. 68: 245–254.
- ^ V. Pekov, A.A. Agakhanov (2007). Thallium-Rich Murunskite from the Lovozero Pluton, Kola Peninsula, and Partitioning of Alkali Metals and Thallium between Sulfide Minerals. Vol. 4. Zapiski Rossiskogo Mineralogicheskogo Obshchestva. pp. 74–78.
- ^ Evans, J.R.; Allmann, R. (1968). The crystal structure and crystal chemistry of Valleriite. Vol. 127. Zeitschrift flir Kristallographie, Bd. pp. 73–93.
- ^
Anthony, J. W., Bedeaux, R., Bladh, K. and Nicholas, M. (1990). Handbook of Mineralogy (PDF). Vol. 1. Mineral Data Publishing (Republished by the Mineralogical Society of America).
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