Mineralogy Database

Krivovichevite Mineral Data

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General Krivovichevite Information

Help on Chemical  Formula: Chemical Formula: Pb3[Al(OH)6](SO4)(OH)
Help on Composition: Composition: Molecular Weight = 872.37 gm
   Aluminum   2.91 %  Al    5.49 % Al2O3
   Hydrogen   0.82 %  H     7.31 % H2O
   Lead      72.20 %  Pb   77.78 % PbO
   Sulfur     3.79 %  S     9.45 % SO3
   Oxygen    20.28 %  O
            ______        ______ 
            100.00 %      100.04 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Pb3.04Al0.94S1.03O3.98(OH)7.08
Help on Environment: Environment: Believed to be a low-temperature hydrothermal alteration product of galena and natrolite by oxidizing solutions. New structure type determined.
Help on IMA Status: IMA Status: Approved IMA 2004 (Dana # Added)
Help on Locality: Locality: Mt. Lepkhe-Nelm, Lovozero massif, Kola Peninsula, Russia Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Sergey Vladimirovich Krivovichev, Professor of mineralogy and crystallography at St. Petersburg State University.
Help on Synonym: Synonym: IMA2004-053

Krivovichevite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:4.14389
Help on Cell Dimensions: Cell Dimensions: a = 7.742, c = 32.082, Z = 6; V = 1,665.32 Den(Calc)= 5.22
Help on Crystal System: Crystal System: Trigonal - Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.58(1), 2.591(0.9), 1.704(0.8),2.048(0.7), 3.1(0.6), 1.893(0.5), 2.216(0.5), 1.859(0.4),

Physical Properties of Krivovichevite

Help on Cleavage: Cleavage: None
Help on Color: Color: Pale gray, Colorless.
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Pseudo Cubic - Crystals show a cubic outline.
Help on Habit: Habit: Water Soluble - Water soluble mineral.
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Krivovichevite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= -0.01 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.158,KC= 0.1564
Ncalc = 1.82
Help on Optical Data: Optical Data: Uniaxial (-), e=1.9, w=1.6-1.9, bire=0.0000-0.3000.

Calculated Properties of Krivovichevite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.47 gm/cc
note: Specific Gravity of Krivovichevite =5.22 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.15
Boson Index = 0.85
Help on Photoelectric: Photoelectric: PEKrivovichevite =1,294.68 barns/electron
U=PEKrivovichevite x rElectron Density=5,787.64 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Krivovichevite is Not Radioactive

Krivovichevite Classification

Help on  Dana Class: Dana Class: (06)Hydroxides and Oxides Containing Hydroxyl
  (06.04)containing multiple cations
  (06.04.14)Dana Group Krivovichevite! Pb3[Al(OH)6](SO4)(OH) R 3c 3m Grandviewite! Cu3Al9(SO4)2(OH)29 P 2, Pm or P 2/m Mono
Help on  Strunz Class: Strunz Class: 07.BC.75 07 - SULFATES (SELENATES, TELLURATES)
  07.B - Sulfates (selenates, etc.) with Additional Anions, without H2O
  07.BC -With medium-sized and large cations
07.BC.75 Krivovichevite! Pb3[Al(OH)6](SO4)(OH) R 3c 3m

Other Krivovichevite Information

Help on References: References: NAME( AmMin, v92:1777) PHYS. PROP.(AmMin, v92:1777; CanMin v47:153) OPTIC PROP.(AmMin, v92:1777)
Help on See Also: See Also: Links to other databases for Krivovichevite :
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: Strunz No: 07.BC.75





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