Mineralogy Database

Leningradite Mineral Data

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General Leningradite Information

Help on Chemical  Formula: Chemical Formula: PbCu++3(VO4)2Cl2
Help on Composition: Composition: Molecular Weight = 698.62 gm
   Vanadium  14.58 %  V    26.03 % V2O5
   Copper    27.29 %  Cu   34.16 % CuO
   Lead      29.66 %  Pb   31.95 % PbO
   Chlorine  10.15 %  Cl   10.15 % Cl
               -   %   Cl   -2.29 % -O=Cl2   
   Oxygen    18.32 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: PbCu3(VO4)2Cl2
Help on Environment: Environment: Vulcanic fumaroles.
Help on IMA Status: IMA Status: Approved IMA 1990
Help on Locality: Locality: Great Tolbachik fissure eruption (1975-1976), Kamchatka, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the city (Leningrad) where many vulcanic sublimates have been studied.
Help on Name Pronunciation: Name Pronunciation: Leningradite + Pronunciation Say LENINGRADITE

Leningradite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.8152:1:0.8463
Help on Cell Dimensions: Cell Dimensions: a = 9.005, b = 11.046, c = 9.349, Z = 4; V = 929.94 Den(Calc)= 4.99
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: I bam
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.418(1), 2.763(0.95), 2.358(0.73),

Physical Properties of Leningradite

Help on Cleavage: Cleavage: {010} Perfect
Help on Color: Color: Red, Reddish brown.
Help on Density: Density: 4.81
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Hardness: Hardness: 4.5 - Between Fluorite and Apatite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: orange red

Optical Properties of Leningradite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.241 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.196 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2645,KPDmeas= 0.2744,KC= 0.2211
Ncalc = 2.06 - 2.1
Help on Optical Data: Optical Data: Biaxial (-), b=2.29, g=2.35,

Calculated Properties of Leningradite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.47 gm/cc
note: Specific Gravity of Leningradite =4.99 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.06
Boson Index = 0.94
Help on Photoelectric: Photoelectric: PELeningradite = 524.62 barns/electron
U=PELeningradite x rElectron Density=2,345.75 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Leningradite is Not Radioactive

Leningradite Classification

Help on  Dana Class: Dana Class: (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
  (41.05)where (A B)2 (XO4) Zq
  (41.05.17)Dana Group Leningradite PbCu3(VO4)2Cl2 I bam 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 08.BH.65 08 - PHOSPHATES, ARSENATES, VANADATES
  08.B - Phosphates, etc. with Additional Anions, without H2O
  08.BH -With medium-sized and large cations, (OH,etc.):RO4 = 1:1
08.BH.65 Leningradite PbCu3(VO4)2Cl2 I bam 2/m 2/m 2/m

Other Leningradite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Am.Min.,V76:1435, v93:256) OPTIC PROP.(Am.Min.,Vol.76,p1435,1991)
Help on See Also: See Also: Links to other databases for Leningradite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Dana No: Strunz No: 08.BH.65





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