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Physical Properties of Scorodite
Cleavage:
{201} Imperfect, {100} Poor, {001} Poor
Color:
Yellowish green, Pale leek green, Liver brown, Blue green, Black green.
Density:
3.1 - 3.3, Average = 3.2
Diaphaneity:
Subtransparent to translucent
Fracture:
Splintery - Thin, elongated fractures produced by intersecting good cleavages or partings (e.g. hornblende).
Habit:
Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite).
Habit:
Fibrous - Crystals made up of fibers.
Habit:
Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Hardness:
3.5-4 - Copper Penny-Fluorite
Luminescence:
Non-fluorescent.
Luster:
Vitreous - Greasy
Streak:
greenish white
Optical Properties of Scorodite
Gladstone-Dale:
CI meas= -0.092 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= -0.066 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2587,KPDmeas= 0.2652,KC= 0.2427 Ncalc = 1.75 - 1.8
Optical Data:
Biaxial (+/-), a=1.784-1.888, b=1.795-1.895, g=1.814-1.915, bire=0.0270-0.0300, 2V(Calc)=62-76, 2V(Meas)=75-62. Dispersion r > v strong.
Pleochroism (x):
none.
Pleochroism (y):
none.
Calculated Properties of Scorodite
Electron Density:
Bulk Density (Electron Density)=3.15 gm/cc note: Specific Gravity of Scorodite =3.28 gm/cc.
Fermion Index:
Fermion Index = 0.0053321348 Boson Index = 0.9946678652
Photoelectric:
PEScorodite = 29.23 barns/electron U=PEScorodite x rElectron Density= 92.21 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Scorodite is Not Radioactive
Chemical Formula: 
