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Wyckoff R W G , Crystal Structures , 1 (1963) p.239-444, Second edition. Interscience Publishers, New York, New York, Note: known as alpha-PbO2
Physical Properties of Scrutinyite
Cleavage:
{100} Perfect, {010} Imperfect
Color:
Dark reddish brown.
Diaphaneity:
Transparent to translucent
Habit:
Crystalline - Fine - Occurs as well-formed fine sized crystals.
Habit:
Platy - Sheet forms (e.g. micas).
Luminescence:
Non-fluorescent.
Luster:
Sub Metallic
Streak:
dark brown
Optical Properties of Scrutinyite
Optical Data:
NCalc= 2.04 - from Gladstone-Dale relationship (KC = 0.105) where Ncalc=Dcalc*KC+1
RL Anisotrophism:
Weak, pale blue.
RL Bireflectance:
Very weak, gray-white to bluish gray.
RL Color:
Gray-white with reddish brown internal reflections.
Reflectivity
Standardized Intensity (100%) Reflection Spectra of Scrutinyite in Air
λ
R1
R2
∑ R1(λ)
∑ R2(λ)
546 nm
17.90
18.80
589 nm
17.00
17.90
Calculated Relative Intensity Colors of Scrutinyite in Air
Relative Intensity
0%
60%
100%
120%
180%
240%
300%
360%
420%
480%
510%
R1
R2
Calculated Properties of Scrutinyite
Electron Density:
Bulk Density (Electron Density)=8.09 gm/cc note: Specific Gravity of Scrutinyite =9.87 gm/cc.
Fermion Index:
Fermion Index = 0.19 Boson Index = 0.81
Photoelectric:
PEScrutinyite =1,622.85 barns/electron U=PEScrutinyite x rElectron Density=13124.76 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Scrutinyite is Not Radioactive