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Siderophyllite from
Rollstone Hill Quarries, Fitchburg, Worcester County, Massachusetts, USA


Locality type:Quarry
Classification
Species:Siderophyllite
Formula:KFe22+Al(Al2Si2O10)(OH)2
Comments:"The refractive indices are: α =1.640 β and γ = 1.645, and suggest siderophyllite." (Hitchen, 1935)
Colour:black
Confirmation
Validity:Unconfirmed/Questioned
Data
Mineral Data:Click here to view Siderophyllite data
Locality Data:Click here to view Rollstone Hill Quarries, Fitchburg, Worcester County, Massachusetts, USA
Data Identifiers
Mindat Occurrence Record ID:264087
Long-form Identifier:1:3:264087:7
GUID (UUID V4):0
References
Hitchen, C. Stanfield (1935) The pegmatites of Fitchburg, Massachusetts. American Mineralogist, 20 (1) 1-24
 
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