Khaydarkan (Kyrgyzstan) antimony-mercury deposit. Arzak mercury deposit, situated about 12 km northeast of the well-known Terlig-Khaya mercury mine, Pii-Khem district, Tuva Republic, R
Link to MinDat.org Location Data.
Name Origin:
Named for Vlakimir Erastovich Poyarkov, Russian geologist, well-known investigator of mercury and antimony deposits.
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:
2-2.5 - Gypsum-Finger Nail
Luster:
Vitreous - Adamantine
Streak:
red
Optical Properties of Poyarkovite
Gladstone-Dale:
CI meas= 0.326 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= 0.331 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1037,KPDmeas= 0.1046,KC= 0.1551 Ncalc = 2.48 - 2.5
Optical Data:
Biaxial (?), b=2
Pleochroism (x):
deep red.
Pleochroism (z):
brownish red.
RL Anisotrophism:
Strong, azure to blue.
RL Color:
White.
Reflectivity
Standardized Intensity (100%) Reflection Spectra of Poyarkovite in Air
λ
R1
R2
∑ R1(λ)
∑ R2(λ)
440 nm
25.00
31.00
460 nm
24.50
31.00
480 nm
22.50
31.00
500 nm
22.50
30.00
520 nm
22.20
29.20
540 nm
22.00
28.40
560 nm
21.60
27.20
580 nm
20.90
25.50
600 nm
20.00
23.50
620 nm
18.50
22.10
640 nm
17.00
20.70
Calculated Relative Intensity Colors of Poyarkovite in Air
Relative Intensity
0%
50%
100%
150%
200%
250%
300%
350%
400%
450%
R1
R2
Calculated Properties of Poyarkovite
Electron Density:
Bulk Density (Electron Density)=7.76 gm/cc note: Specific Gravity of Poyarkovite =9.56 gm/cc.
Fermion Index:
Fermion Index = 0.27 Boson Index = 0.73
Photoelectric:
PEPoyarkovite =1,607.49 barns/electron U=PEPoyarkovite x rElectron Density=12468.73 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Poyarkovite is Not Radioactive
Chemical Formula: 
