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Majzlan J , Stevens R , Boerio-Goates J , Woodfield B F , Navrotsky A , Burns P C , Crawford M K , Amos T G , Physics and Chemistry of Minerals , 31 (2004) p.518-531, Thermodynamic properties, low-temperature heat-capacity anomalies,, and single-crystal X-ray refinement of hydronium jarosite, (H3O)Fe3(SO4)2(OH)6, Note: Rietveld refinement of synchrotron X-ray diffraction pattern
Physical Properties of Hydroniumjarosite
Color:
Yellow, Dark straw yellow, Reddish brown, Brown.
Density:
2.496 - 2.905, Average = 2.7
Diaphaneity:
Transparent to Translucent
Hardness:
4-4.5 - Between Fluorite and Apatite
Luster:
Vitreous - Resinous
Optical Properties of Hydroniumjarosite
Gladstone-Dale:
CI meas= -0.111 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= 0 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2733,KPDmeas= 0.3036,KC= 0.2732 Ncalc = 1.68 - 1.82
Optical Data:
Uniaxial (-), e=1.82, w=1.82, bire=0.0000.
Calculated Properties of Hydroniumjarosite
Electron Density:
Bulk Density (Electron Density)=2.98 gm/cc note: Specific Gravity of Hydroniumjarosite =3.00 gm/cc.
Fermion Index:
Fermion Index = 0.0086313907 Boson Index = 0.9913686093
Photoelectric:
PEHydroniumjarosite = 11.08 barns/electron U=PEHydroniumjarosite x rElectron Density= 33.04 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Hydroniumjarosite is Not Radioactive
Hydroniumjarosite Classification
Dana Class:
30.02.05.03(30)Anhydrous Sulfates Containing Hydroxyl or Halogen