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Holtstam D , Linqvist B , Johnsson M , Norrestam R , The Canadian Mineralogist , 29 (1991) p.347-354, Zenzenite: Pb3(Fe,Mn)4Mn3O15, a new mineral species, from Langban, Filipstad, Sweden, and its crystal structure, Locality: Langban, Filipstad, Sweden
Physical Properties of Zenzenite
Cleavage:
{0001} Indistinct
Color:
Black.
Density:
6.83
Diaphaneity:
Opaque
Habit:
Euhedral Crystals - Occurs as well-formed crystals showing good external form.
Hardness:
5.7
Luster:
Metallic
Magnetism:
Weakly magnetic
Optical Properties of Zenzenite
Optical Data:
Uniaxial (?).
NCalc= 2.61 - from Gladstone-Dale relationship (KC = 0.2347) where Ncalc=Dcalc*KC+1 NCalc= 2.6 - from Gladstone-Dale relationship (KC = 0.2347) where Ncalc=Dmeas*KC+1
RL Anisotrophism:
Distinct, in shades of gray and pale brown.
RL Bireflectance:
Weak, visible only in oil.
RL Color:
Bright white.
Reflectivity
Standardized Intensity (100%) Reflection Spectra of Zenzenite in Air
λ
R1
R2
∑ R1(λ)
∑ R2(λ)
400 nm
32.00
25.90
420 nm
31.70
26.20
440 nm
31.60
26.50
460 nm
31.20
26.20
480 nm
30.80
25.90
500 nm
30.40
25.60
520 nm
30.00
25.40
540 nm
29.60
25.10
560 nm
29.20
24.80
580 nm
28.70
24.50
600 nm
28.30
24.20
620 nm
27.80
23.90
640 nm
27.40
23.60
660 nm
27.10
23.30
680 nm
26.80
22.90
700 nm
26.50
22.60
Calculated Relative Intensity Colors of Zenzenite in Air
Relative Intensity
0%
40%
80%
100%
120%
160%
200%
240%
280%
320%
360%
370%
R1
R2
Calculated Properties of Zenzenite
Electron Density:
Bulk Density (Electron Density)=5.96 gm/cc note: Specific Gravity of Zenzenite =6.84 gm/cc.
Fermion Index:
Fermion Index = 0.11 Boson Index = 0.89
Photoelectric:
PEZenzenite = 875.33 barns/electron U=PEZenzenite x rElectron Density=5,218.86 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Zenzenite is Not Radioactive