Item talk:Q162604
From geokb
Mindat Short Description
An amorphous Fe3+ hydrous arsenate sulphate of questionable validity. Chemical composition appears to be variable.
"Microprobe analyses of 7 pitticites from various localities indicate that it is a gel-like mineral of widely varying composition wit...
Geoscience Ontology Status Notes
Schmetzer K, Horn W, Medenbach O (1981) Cobaltkoritnigite, (Co,Zn)[H2O][AsO3OH], a new mineral, and pitticite, Fe2O3·As2O5·9-10H2O, an amorphous Fe-arsenate-hydrate, Neues Jahrbuch für Mineralogie, Monatshefte 1981, 257-266
IMA Formula (from Mindat)
[Fe,AsO4,SO4,H2O] (?)
RRUFF Formula (from Geoscience Ontology)
Fe3+x(As5+O4)y(S6+O4)z·nH2O
