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Mannardite Mineral Data
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General Mannardite Information
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 Chemical Formula: |
BaTi6V+++2O16•(H2O) |
| Composition: |
Molecular Weight = 800.50 gm |
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Barium 17.16 % Ba 19.15 % BaO |
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Titanium 35.89 % Ti 59.87 % TiO2 |
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Vanadium 12.73 % V 18.72 % V2O3 |
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Hydrogen 0.25 % H 2.25 % H2O |
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Oxygen 33.98 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
BaTi6V3+2O16•(H2O) |
| Environment: |
In late-stage quartz-carbonate veins cutting shale and siltstone. |
| IMA Status: |
Approved IMA 1986 |
| Locality: |
Rough Claims, Sifton Pass, Kechica River, British Columbia, Canada. Link to MinDat.org Location Data. |
| Name Origin: |
Named for George William Mannard (1932-1982), formerly President of Kidd Creek Mines, Ltd., Toronto, Canada. |
| Name Pronunciation: |
Mannardite + Pronunciation  |
| Synonym: |
ICSD 201926 |
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IMA1983-013 |
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PDF 42-615 |
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Mannardite Image |
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Images:
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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 |
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Mannardite Crystallography
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| Axial Ratios: |
a:c = 1:0.41174 |
| Cell Dimensions: |
a = 14.356, c = 5.911, Z = 4; V = 1,218.23 Den(Calc)= 4.36 |
| Crystal System: |
Tetragonal - Dipyramidal H-M Symbol (4/m) Space Group: I 41/a |
| X Ray Diffraction: |
By Intensity(I/Io): 3.201(1), 1.586(0.8), 2.473(0.7), |
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Physical Properties of Mannardite
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| Cleavage: |
{100} Good |
| Color: |
Black. |
| Density: |
4.12 - 4.43, Average = 4.27 |
| Diaphaneity: |
Opaque |
| Fracture: |
Brittle - Uneven - Very brittle fracture producing uneven fragments. |
| Habit: |
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). |
| Hardness: |
7 - Quartz |
| Luster: |
Adamantine |
| Streak: |
gray white |
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Optical Properties of Mannardite
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| Optical Data: |
Uniaxial (+). |
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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
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| RL Anisotrophism: |
Strong, light pinkish gray to dark brownish gray. |
| RL Bireflectance: |
Distinct, light to dark brown. |
| RL Color: |
Pale reddish brown. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Mannardite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
16.50 |
18.00 |
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| 420 nm |
16.30 |
17.60 |
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| 440 nm |
16.00 |
17.20 |
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| 460 nm |
15.70 |
17.00 |
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| 480 nm |
15.50 |
16.90 |
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| 500 nm |
15.40 |
17.00 |
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| 520 nm |
15.20 |
17.20 |
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| 540 nm |
15.10 |
17.40 |
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| 560 nm |
15.00 |
17.70 |
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| 580 nm |
15.00 |
17.90 |
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| 600 nm |
15.00 |
18.10 |
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| 620 nm |
15.00 |
18.30 |
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| 640 nm |
15.00 |
18.40 |
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| 660 nm |
15.00 |
18.50 |
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| 680 nm |
15.10 |
18.60 |
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| 700 nm |
15.10 |
18.60 |
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Calculated Relative Intensity Colors of Mannardite in Air
Relative
Intensity |
0% |
60% |
100% |
120% |
180% |
240% |
300% |
360% |
420% |
480% |
540% |
580% |
| R1 |
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| R2 |
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Calculated Properties of Mannardite
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| Electron Density: |
Bulk Density (Electron Density)=4.05 gm/cc
note: Specific Gravity of Mannardite =4.36 gm/cc.
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| Fermion Index: |
Fermion Index = 0.07
Boson Index = 0.93 |
| Photoelectric: |
PEMannardite = 82.64 barns/electron
U=PEMannardite x rElectron Density= 334.87 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Mannardite is Not Radioactive |
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Mannardite Classification
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| Dana Class: |
07.09.05.01 (07)Multiple Oxides |
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(07.09)Dana Type |
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(07.09.05)Dana Group |
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07.09.05.01 Mannardite BaTi6V2O16•(H2O) I 41/a 4/m |
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07.09.05.02 Redledgeite BaTi6Cr2O16•(H2O) I 41/a 4/m |
| Strunz Class: |
04.DK.05 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate |
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04.D - Metal:Oxygen = 1:2 and similar |
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04.DK -With large (� medium-sized) cations; tunnel structures |
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04.DK.05 Akaganeite Fe(O,OH,Cl) I2/m 2/m |
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04.DK.05 Ankangite Ba(Ti,V,Cr)8O16 I 4/m 4/m |
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04.DK.05 Coronadite Pb(Mn,Mn)8O16 I2/m 2/m |
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04.DK.05 Hollandite Ba(Mn,Mn)8O16 I2/m 2/m |
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04.DK.05 Manjiroite (Na,K)(Mn,Mn)8O16•n(H2O) I 4/m 4/m |
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04.DK.05 Mannardite BaTi6V2O16•(H2O) I 41/a 4/m |
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04.DK.05 Redledgeite BaTi6Cr2O16•(H2O) I 41/a 4/m |
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04.DK.05 Priderite (K,Ba)(Ti,Fe)8O16 I 4/m 4/m |
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04.DK.05 Henrymeyerite! BaFeTi7O16 I 4/m 4/m |
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Other Mannardite Information
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| References: |
NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic3) |
| 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:
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