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Bayliss P , American Mineralogist , 74 (1989) p.1168-1176, Crystal chemistry and crystallography of some minerals within the pyrite group
Physical Properties of Tolovkite
Cleavage:
None
Color:
Steel gray.
Density:
10.5
Diaphaneity:
Opaque
Fracture:
Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Habit:
Anhedral Grains - Granular minerals without the expression of crystal shapes
Hardness:
7.5 - Garnet
Luster:
Metallic
Optical Properties of Tolovkite
RL Color:
Gray with a pale brown tint.
Reflectivity
Standardized Intensity (100%) Reflection Spectra of Tolovkite in Air
λ
R
∑ R(λ)
442 nm
36.70
468 nm
39.00
484 nm
39.90
525 nm
42.00
554 nm
42.50
586 nm
42.90
621 nm
43.50
666 nm
43.80
699 nm
44.00
Calculated Relative Intensity Colors of Tolovkite in Air
Relative Intensity
0%
30%
60%
90%
100%
120%
150%
180%
210%
230%
R
Calculated Properties of Tolovkite
Electron Density:
Bulk Density (Electron Density)=8.74 gm/cc note: Specific Gravity of Tolovkite =10.5 gm/cc.
Fermion Index:
Fermion Index = 0.0006949999 Boson Index = 0.9993050001
Photoelectric:
PETolovkite = 951.75 barns/electron U=PETolovkite x rElectron Density=8,317.28 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Tolovkite is Not Radioactive
Tolovkite Classification
Dana Class:
02.12.03.05(02)Sulfides - Including Selenides and Tellurides