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Alsakharovite-Zn Mineral Data

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General Alsakharovite-Zn Information

Help on Chemical  Formula: Chemical Formula: NaSrKZn(Ti,Nb)4(Si4O12)2(O,OH)4•7(H2O)
Help on Composition: Composition: Molecular Weight = 1,240.78 gm
   Potassium   1.99 %  K     2.39 % K2O
   Barium      3.21 %  Ba    3.58 % BaO
   Sodium      1.50 %  Na    2.02 % Na2O
   Strontium   3.74 %  Sr    4.43 % SrO
   Calcium     1.03 %  Ca    1.45 % CaO
   Titanium   11.19 %  Ti   18.67 % TiO2
   Niobium     8.69 %  Nb   12.43 % Nb2O5
   Zinc        4.01 %  Zn    4.99 % ZnO
   Iron        0.18 %  Fe    0.23 % FeO
   Silicon    18.11 %  Si   38.74 % SiO2
   Hydrogen    1.23 %  H    10.96 % H2O
   Oxygen     45.13 %  O
             ______        ______ 
             100.00 %       99.88 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na0.68Ca0.32Sr0.53Na0.13K0.63Ba0.29Zn0.76Fe2+0.04Ti2.9Nb1.16Si8O24O2.9(OH)1.1�7(H2O)
Help on Environment: Environment: Hydrothemal mineral in cavities of a eudialyte-aegirine-feldspar pegmatite. Labuntsovite group, gutkovaite subgroup; structure determined.
Help on IMA Status: IMA Status: Approved IMA 2003 (Dana # Added)
Help on Locality: Locality: Lepkhe-Nelm Mountain, Lovozero alkaline massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Aleksey S. Sakharov (1910-1996), Russian geologist who studied the Lovozero alkaline massif.
Help on Synonym: Synonym: IMA2002-003

Alsakharovite-Zn Image

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Comments: Light brown crystal fragment of alsakharovite-Zn.
Location: Lepkhe Nelm Mountain, Lovozero, Kola Peninsula, Russia. Scale: Crystal size 2 mm.
© Thomas Witzke / Abraxas-Verlag

Alsakharovite-Zn Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.0394:1:0.562
Help on Cell Dimensions: Cell Dimensions: a = 14.495, b = 13.945, c = 7.838, Z = 2; beta = 117.75° V = 1,402.10 Den(Calc)= 2.94
Help on Crystal System: Crystal System: Monoclinic - Domatic H-M Symbol (m) Space Group: Cm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 6.96(1)(020,001), 3.11(0.9)(041,022,240), 3.21(0.8)(402,421,400), 1.7(0.4)(463,444,461,442.5(0.4)(441,403), 2.6(0.35)(15

Physical Properties of Alsakharovite-Zn

Help on Cleavage: Cleavage: None
Help on Color: Color: White, Pale brown, Colorless.
Help on Density: Density: 2.9
Help on Diaphaneity: Diaphaneity: Translucent to transparent
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 5 - Apatite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Alsakharovite-Zn

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.031 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.044 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2442,KPDmeas= 0.2476,KC= 0.2554
Ncalc = 1.74 - 1.75
Help on Optical Data: Optical Data: Biaxial (+), a=1.68, b=1.687, g=1.787, bire=0.1070, 2V(Calc)=32, 2V(Meas)=25. Dispersion dispersion not observed.

Calculated Properties of Alsakharovite-Zn

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.83 gm/cc
note: Specific Gravity of Alsakharovite-Zn =2.90 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PEAlsakharovite-Zn = 34.73 barns/electron
U=PEAlsakharovite-Zn x relectron= 98.39 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 28.00 (Gamma Ray American Petroleum Institute Units)
Concentration of Alsakharovite-Zn per GRapi unit = 3.57 (%)

Estimated Radioactivity from Alsakharovite-Zn - barely detectable


Alsakharovite-Zn Classification

Help on  Dana Class: Dana Class: 60.01.03f.02 (60)Cyclosilicate Four-Membered Rings
  (60.01)as Titanosilicates
  (60.01.03f)Labuntsovite Group (Gutkovaite subgroup Monoclinic [Cm])
60.01.03f.01 Gutkovaite-Mn! CaK2Mn(Ti,Nb)4(Si4O12)2(O,OH)4•5(H2O) Cm m
60.01.03f.02 Alsakharovite-Zn! NaSrKZn(Ti,Nb)4(Si4O12)2(O,OH)4•7(H2O) Cm m
60.01.03f.03 Neskevaaraite-Fe! NaK3Fe(Ti,Nb)4(Si4O12)2(O,OH)4•6(H2O) Cm m
Help on  Strunz Class: Strunz Class: 09.CE.30h 09 - SILICATES (Germanates)
  09.C - Cyclosilicates
  09.CE -[Si4O12]8- 4-membered single rings (vierer-Einfachringe),
09.CE.30h Gutkovaite-Mn! CaK2Mn(Ti,Nb)4(Si4O12)2(O,OH)4•5(H2O) Cm m
09.CE.30h Alsakharovite-Zn! NaSrKZn(Ti,Nb)4(Si4O12)2(O,OH)4•7(H2O) Cm m
09.CE.30h Neskevaaraite-Fe! NaK3Fe(Ti,Nb)4(Si4O12)2(O,OH)4•6(H2O) Cm m

Other Alsakharovite-Zn Information

Help on References: References: NAME( CanMin, 41:1309) PHYS. PROP.(CanMin, 41:1309) OPTIC PROP.(CanMin, 41:1309)
Help on See Also: See Also: Links to other databases for Alsakharovite-Zn :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Dana No: 60.01.03f.02 Strunz No: 09.CE.30h





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