Mannardite Mineral Data

Mannardite Mineral Data
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General Mannardite Information

Help on Chemical Formula: Chemical Formula: BaTi6V+++2O16•(H2O)
Help on Composition: Composition: Molecular Weight = 800.50 gm
   Barium    17.16 %  Ba   19.15 % BaO
   Titanium  35.89 %  Ti   59.87 % TiO2
   Vanadium  12.73 %  V    18.72 % V2O3
   Hydrogen   0.25 %  H     2.25 % H2O
   Oxygen    33.98 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: BaTi6V3+2O16•(H2O)
Help on Environment: Environment: In late-stage quartz-carbonate veins cutting shale and siltstone.
Help on IMA Status: IMA Status: Approved IMA 1986
Help on Locality: Locality: Rough Claims, Sifton Pass, Kechica River, British Columbia, Canada. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for George William Mannard (1932-1982), formerly President of Kidd Creek Mines, Ltd., Toronto, Canada.
Help on Name Pronunciation: Name Pronunciation: Mannardite + Pronunciation Say MANNARDITE
Help on Synonym: Synonym: ICSD 201926
  IMA1983-013
  PDF 42-615
 

Mannardite Image

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Mannardite

Comments: Prismatic crystals of black, metallic lustered mannardite crystals in matrix.
Location: Kechica River, British Columbia, Canada. Scale: 3.4 X 4.5 cm.
© John Veevaert

Mannardite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:0.41174
Help on Cell Dimensions: Cell Dimensions: a = 14.356, c = 5.911, Z = 4; V = 1,218.23 Den(Calc)= 4.36
Help on Crystal System: Crystal System: Tetragonal - DipyramidalH-M Symbol (4/m) Space Group: I 41/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.201(1), 1.586(0.8), 2.473(0.7),
Click Here for Large Mannardite Structure Window Crystal Structure:

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Szymanski J T , The Canadian Mineralogist , 24 (1986) p.67-78, The crystal structure of mannardite, a new hydrated cryptomelane-group, (hollandite) mineral with a doubled short axis

 

Physical Properties of Mannardite

Help on Cleavage: Cleavage: {100} Good
Help on Color: Color: Black.
Help on Density: Density: 4.12 - 4.43, Average = 4.27
Help on Diaphaneity: Diaphaneity: Opaque
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 Hardness: Hardness: 7 - Quartz
Help on Luster: Luster: Adamantine
Help on Streak: Streak: gray white
 

Optical Properties of Mannardite

Help on Optical Data: Optical Data: Uniaxial (+).
  NCalc= 2.39 - from Gladstone-Dale relationship (KC = 0.3197) where Ncalc=Dcalc*KC+1
NCalc= 2.37 - from Gladstone-Dale relationship (KC = 0.3197) where Ncalc=Dmeas*KC+1
Help on RL Anisotrophism: RL Anisotrophism: Strong, light pinkish gray to dark brownish gray.
Help on RL Bireflectance: RL Bireflectance: Distinct, light to dark brown.
Help on RL Color: RL Color: Pale reddish brown.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Mannardite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   16.50   18.00 
   
 420 nm   16.30   17.60 
 440 nm   16.00   17.20 
 460 nm   15.70   17.00 
 480 nm   15.50   16.90 
 500 nm   15.40   17.00 
 520 nm   15.20   17.20 
 540 nm   15.10   17.40 
 560 nm   15.00   17.70 
 580 nm   15.00   17.90 
 600 nm   15.00   18.10 
 620 nm   15.00   18.30 
 640 nm   15.00   18.40 
 660 nm   15.00   18.50 
 680 nm   15.10   18.60 
 700 nm   15.10   18.60 
Calculated Relative Intensity Colors of Mannardite in Air
Relative
Intensity		    0%   60% 100% 120% 180% 240% 300% 360% 420% 480% 540% 580%
R1                        
R2                        
 

Calculated Properties of Mannardite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.05 gm/cc
note: Specific Gravity of Mannardite =4.36 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.07
Boson Index = 0.93
Help on Photoelectric: Photoelectric: PEMannardite = 82.64 barns/electron
U=PEMannardite x rElectron Density= 334.87 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Mannardite is Not Radioactive
 

Mannardite Classification
Help on Dana Class: Dana Class: 07.09.05.01 (07)Multiple Oxides
  (07.09)Dana Type
  (07.09.05)Dana Group
 
07.09.05.01 Mannardite BaTi6V2O16•(H2O) I 41/a 4/m
 
07.09.05.02 Redledgeite BaTi6Cr2O16•(H2O) I 41/a 4/m
Help on Strunz Class: Strunz Class: 04.DK.05 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.D - Metal:Oxygen = 1:2 and similar
  04.DK -With large (± medium-sized) cations; tunnel structures
 
04.DK.05 Akaganeite Fe(O,OH,Cl) I2/m 2/m
 
04.DK.05 Ankangite Ba(Ti,V,Cr)8O16 I 4/m 4/m
 
04.DK.05 Coronadite Pb(Mn,Mn)8O16 I2/m 2/m
 
04.DK.05 Hollandite Ba(Mn,Mn)8O16 I2/m 2/m
 
04.DK.05 Manjiroite (Na,K)(Mn,Mn)8O16•n(H2O) I 4/m 4/m
 
04.DK.05 Mannardite BaTi6V2O16•(H2O) I 41/a 4/m
 
04.DK.05 Redledgeite BaTi6Cr2O16•(H2O) I 41/a 4/m
 
04.DK.05 Priderite (K,Ba)(Ti,Fe)8O16 I 4/m 4/m
 
04.DK.05 Henrymeyerite! BaFeTi7O16 I 4/m 4/m
 

Other Mannardite Information
Help on References: References: NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic3)
Help on See Also: See Also: Links to other databases for Mannardite :
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
15 - WWW-MINCRYST

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Mannardite

BaTi6V+++2O16•(H2O)
Dana No: 07.09.05.01 Strunz No: 04.DK.05
Locality:

 

Notes: