Mineralogy Database

Vladimirite Mineral Data

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General Vladimirite Information

Help on Chemical  Formula: Chemical Formula: Ca5(AsO3OH)2(AsO4)2•5(H2O)
Help on Composition: Composition: Molecular Weight = 848.16 gm
   Calcium   23.63 %  Ca   33.06 % CaO
   Arsenic   35.33 %  As   54.20 % As2O5
   Hydrogen   1.43 %  H    12.74 % H2O
   Oxygen    39.61 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca5(AsO3OH)2(AsO4)2•5(H2O)
Help on Environment: Environment: Secondary mineral in the oxidized zone of arsenic-bearing mineral deposits.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1953
Help on Locality: Locality: Vladimirovskoye cobalt deposit, Altai Mountains, and the Khovu-Aksy Ni-Co deposit, Tuva, Siberia, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Vladimirite + Pronunciation Say VLADIMIRITE
Help on Synonym: Synonym: ICSD 100850
  PDF 83-1926

Vladimirite Image

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  Vladimirite   Sphaerocobaltite

Comments: Translucent white prismatic vladimirite microcrystals with pink sphaerocobaltite.
Location: Irhtem Mine, near Bou Azzer, Ouarzazate, Morocco. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

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Comments: Snow white radial, acicular sprays, thick on calcite matrix.
Location: Ait Ahmane, Bou Azzer district,, Morocco. Scale: Crystal size 5 mm.
© Tom Loomis / Dakota Matrix

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Comments: Sprays of platy, elongated, white tiny crystals of vladimirite, associated with minor aragonite.
Location: Irhtem, Morocco. Scale: Picture size 3 cm.
© Sandro Maggia/Minernet.it

Vladimirite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.5701:1:2.2276
Help on Cell Dimensions: Cell Dimensions: a = 5.81, b = 10.19, c = 22.7, Z = 3; beta = 97.32° V = 1,332.98 Den(Calc)= 3.17
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.79(1), 4(0.8), 4.15(0.8),

Physical Properties of Vladimirite

Help on Cleavage: Cleavage: {???} Good
Help on Color: Color: Colorless, White, Light pink.
Help on Density: Density: 3.14
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 3.5 - Copper Penny
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Vladimirite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.041 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.031 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2067,KPDmeas= 0.2087,KC= 0.2006
Ncalc = 1.63 - 1.64
Help on Optical Data: Optical Data: Biaxial (-), a=1.65, b=1.654-1.656, g=1.661, bire=0.0110, 2V(Calc)=76-84, 2V(Meas)=70.

Calculated Properties of Vladimirite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.08 gm/cc
note: Specific Gravity of Vladimirite =3.17 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0005112422
Boson Index = 0.9994887578
Help on Photoelectric: Photoelectric: PEVladimirite = 26.57 barns/electron
U=PEVladimirite x rElectron Density= 81.82 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Vladimirite is Not Radioactive

Vladimirite Classification

Help on  Dana Class: Dana Class: (39)Hydrated Acid Phosphates, etc
  (39.02)H2 (AB)5 (XO4)4 � x(H2O)
  (39.02.02)Dana Group Vladimirite Ca5(AsO3OH)2(AsO4)2•5(H2O) P 21/c 2/m Guerinite Ca5(AsO3OH)2(AsO4)2•9(H2O) P 21/n 2/m
Help on  Strunz Class: Strunz Class: 08.CJ.25 08 - PHOSPHATES, ARSENATES, VANADATES
  08.C - Phosphates without Additional Anions, with H2O
  08.CJ -With only large cations
08.CJ.25 Vladimirite Ca5(AsO3OH)2(AsO4)2•5(H2O) P 21/c 2/m

Other Vladimirite Information

Help on References: References: NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Vladimirite :
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.CJ.25





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