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About FerristilpnomelaneHide

Greenish brown to dark greenish brown or black
Sub-Vitreous, Greasy
3 - 3½
Informally named in 1951 by Alexander N. Winchell for a slightly ferrian stilpnomelane, but sometimes mistaken as an attempt to rename ferric-dominant stilpnomelane (chalcodite).
A variety of Stilpnomelane

Physical Properties of FerristilpnomelaneHide

Sub-Vitreous, Greasy
Transparent, Translucent
Greenish brown to dark greenish brown or black
Dark greenish brown
3 - 3½ on Mohs scale

Chemical Properties of FerristilpnomelaneHide


Common AssociatesHide

Associated Minerals Based on Photo Data:
1 photo of Ferristilpnomelane associated with Ferriallanite-(Ce){CaCe}{Fe3+AlFe2+}(Si2O7)(SiO4)O(OH)
1 photo of Ferristilpnomelane associated with Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)

Other InformationHide

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

References for FerristilpnomelaneHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Winchell, Alexander N., 1951, Optical Mineralogy, fourth edition, part 2, p. 390.

Internet Links for FerristilpnomelaneHide

Localities for FerristilpnomelaneHide

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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
  • Districts of Republican Subordination
V.A. Karpenko data
  • California
    • Mendocino Co.
      • Coastal Range
        • Laytonville
Chesterman, C.W. (1966b), Mineralogy of the Laytonville quarry, Mendocino County, California, in: Geology of Northern California: California Division Mines & Geol. Bulletin 190: 506; Rice, S.J. (1966) A new mineral locality. California Division of Mines and Geology Mineral Information Service: 19: 7; Onucki, H. and Ernst, W.G. (1969) Coexisting sodic amphiboles and sodic pyroxenes from blueschist facies metamorphic rocks. Mineralogical Association of America Special Paper 2: 242; Pemberton, H. Earl (1983), Minerals of California: 432.
  • Colorado
    • La Plata Co.
      • Durango Area
Minerals of Colorado (1997) E.B. Eckel
  • New Jersey
    • Sussex Co.
      • Franklin Mining District
Oen, et al. (1984) The Nickel-arsenide Assemblage from Franklin, New Jersey: Description and Interpretation, Neues Jahrbuch fuer Mineralogie Abhandlungen, v. 150, p. 259-272.
  • New York
    • Jefferson Co.
      • Antwerp
Mineralogical Record: 15(4): 199-216.
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