Rockbridgeite : Fe2+Fe3+4(PO4)3(OH)5
Kidwellite : NaFe3+9+x(PO4)6(OH)11·3H2O, x = 0.33
Photo added to mindat.org
“Picture width 6 mm. Collection and foto Stephan Wolfsried.
Dark greenish, massive radiating rockbridgeite (SXRD- and EDS-analysed by Uwe Kolitsch; originally obtained as "dufrenite") grading into pale greenish fibrous kidwellite (EDS-analysed by Uwe Kolitsch). ”
Stephan Wolfsried - 6th May 2007
Photo added to mindat.org
“SEM micrograph (BSE mode) of kidwellite needles removed from the specimen for EDS analyses.”
Uwe Kolitsch - 3rd December 2015
Photo added to mindat.org
“SEM micrograph (SE mode) of kidwellite needles removed from the specimen for EDS analyses.”
Uwe Kolitsch - 3rd December 2015
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