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Wildner M , Giester G , Neues Jahrbuch fur Mineralogie, Monatshefte , 1991 (1991) p.296-306, The crystal structures of kieserite-type compounds., I. Crystal structures of Me(II)SO4*H2O (Me = Mn,Fe,Co,Ni,Zn), Locality: synthetic
Physical Properties of Dwornikite
Color:
White.
Density:
3.34
Diaphaneity:
Transparent to Translucent
Hardness:
2-3 - Gypsum-Calcite
Luster:
Vitreous (Glassy)
Streak:
white
Optical Properties of Dwornikite
Gladstone-Dale:
CI meas= 0.032 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= 0.029 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1892,KPDmeas= 0.1886,KC= 0.1949 Ncalc = 1.65
Optical Data:
Biaxial (?), b=1.63
Calculated Properties of Dwornikite
Electron Density:
Bulk Density (Electron Density)=3.31 gm/cc note: Specific Gravity of Dwornikite =3.33 gm/cc.
Fermion Index:
Fermion Index = 0.0062338396 Boson Index = 0.9937661604
Photoelectric:
PEDwornikite = 13.53 barns/electron U=PEDwornikite x rElectron Density= 44.79 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Dwornikite is Not Radioactive