In reedmergnerite boulders on the moraine of the Dara-i-Pioz glacier. (related to leifite; structure)
IMA Status:
Approved IMA 2003 (Dana # Added)
Locality:
Moraine of the Darai-Pioz glacier in northern Tajikistan. Link to MinDat.org Location Data.
Name Origin:
Named for Tamara Matveyevna Telyushenko (1930�1997), a petrographer who made major contributions to knowledge of the geology of Central Asia and who headed the Young Geologists� Sch ool of Ashkhabad for over thirty years
Synonym:
IMA2001-012
Telyushenkoite Crystallography
Axial Ratios:
a:c = 1:0.33933
Cell Dimensions:
a = 14.377, c = 4.8786, Z = 1; V = 873.30 Den(Calc)= 2.72
Brittle - Uneven - Very brittle fracture producing uneven fragments.
Habit:
Anhedral Grains - Granular minerals without the expression of crystal shapes
Habit:
Equant Grains - Granular material with equel dimensions in x, y, and z.
Hardness:
6 - Orthoclase
Luster:
Vitreous (Glassy)
Streak:
white
Optical Properties of Telyushenkoite
Gladstone-Dale:
CI meas= -0.014 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= -0.017 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2009,KPDmeas= 0.2002,KC= 0.1975 Ncalc = 1.54
Optical Data:
Uniaxial (+), w=1.562, e=1.531, bire=0.0310.
Calculated Properties of Telyushenkoite
Electron Density:
Bulk Density (Electron Density)=2.67 gm/cc note: Specific Gravity of Telyushenkoite =2.73 gm/cc.
Fermion Index:
Fermion Index = 0.02 Boson Index = 0.98
Photoelectric:
PETelyushenkoite = 27.19 barns/electron U=PETelyushenkoite x relectron= 72.59 barns/cc.
Radioactivity:
GRapi = 30.13 (Gamma Ray American Petroleum Institute Units)
Concentration of Telyushenkoite per GRapi unit = 3.32 (%)
Estimated Radioactivity from Telyushenkoite - barely detectable
Chemical Formula: 
- barely detectable