Mineralogy Database

Henrymeyerite Mineral Data

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General Henrymeyerite Information

Help on Chemical  Formula: Chemical Formula: BaFe++Ti7O16
Help on Composition: Composition: Molecular Weight = 784.32 gm
   Barium    17.51 %  Ba   19.55 % BaO
   Titanium  42.73 %  Ti   71.29 % TiO2
   Iron       7.12 %  Fe    9.16 % FeO
   Oxygen    32.64 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: BaFe2+Ti7O16
Help on Environment: Environment: From a vug in a carbonatite vein. Late stage mineral in carbonitite rocks. Hollandite group
Help on IMA Status: IMA Status: Approved IMA 1999 (Dana # Added)
Help on Locality: Locality: Kovdor alkaline ultramafic Complex, Kola Peninsula Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Prof. Henry. O. A. Meyer (1937-1995).
Help on Synonym: Synonym: IMA1999-016

Henrymeyerite Image

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  Henrymeyerite   Aegirine

Comments: A nearly black crystal of henrymeyerite with dark green prismatic crystals of aegirine in quartz.
Location: Green River formation, Uintah County, Utah, USA. Scale: Picture size 3 mm.
© Thomas Witzke / Abraxas-Verlag

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Comments: Slender prismatic crystals of henrymeyerite intergrown with stubby hexagonal prisms of fluorapatite and dolomite rhombohedra. (CanMin v 38. p 620).
Location: Kovdor alkaline ultramafic complex, Kola Peninsula, Russia. Scale: Image size 0.2 mm.
© Canadian Mineralogist

Henrymeyerite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.28995
Help on Cell Dimensions: Cell Dimensions: a = 10.219, c = 2.963, Z = 1; V = 309.42 Den(Calc)= 4.21
Help on Crystal System: Crystal System: Tetragonal - Dipyramidal H-M Symbol (4/m) Space Group: I 4/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.232(1)(310), 2.236(0.4)(301), 2.486(0.34)(211),1.598(0.33)(521), 1.901(0.31)(411), 1.405(0.26)(541), 1.703(0.22)(600),

Physical Properties of Henrymeyerite

Help on Color: Color: Black.
Help on Density: Density: 4
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Hardness: Hardness: 5-6 - Between Apatite and Orthoclase
Help on Luster: Luster: Adamantine
Help on Streak: Streak: reddish brown

Optical Properties of Henrymeyerite

Help on Optical Data: Optical Data: NCalc= 2.36 - from Gladstone-Dale relationship (KC = 0.3224) where Ncalc=Dcalc*KC+1
NCalc= 2.29 - from Gladstone-Dale relationship (KC = 0.3224) where Ncalc=Dmeas*KC+1
Help on RL Bireflectance: RL Bireflectance: Weak, brownish.
Help on RL Color: RL Color: Grayish brown.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Henrymeyerite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 440 nm   12.20   13.40 
 480 nm   11.90   12.80 
 540 nm   11.60   12.60 
 660 nm   11.30   13.80 
Calculated Relative Intensity Colors of Henrymeyerite in Air
   0%   80% 100% 160% 240% 320% 400% 480% 560% 640% 720% 770%

Calculated Properties of Henrymeyerite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.91 gm/cc
note: Specific Gravity of Henrymeyerite =4.21 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.08
Boson Index = 0.92
Help on Photoelectric: Photoelectric: PEHenrymeyerite = 85.17 barns/electron
U=PEHenrymeyerite x rElectron Density= 332.80 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Henrymeyerite is Not Radioactive

Henrymeyerite Classification

Help on  Dana Class: Dana Class: (07)Multiple Oxides
  (07.09)Dana Type
  (07.09.01)Cryptomelane Group (Hard black, fine-grained) Hollandite Ba(Mn,Mn)8O16 I2/m 2/m Cryptomelane K(Mn,Mn)8O16 I2/m 2/m Manjiroite (Na,K)(Mn,Mn)8O16•n(H2O) I 4/m 4/m Coronadite Pb(Mn,Mn)8O16 I2/m 2/m Strontiomelane! SrMn6Mn2O16 P 21/m 2/m Henrymeyerite! BaFeTi7O16 I 4/m 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 Henrymeyerite Information

Help on References: References: NAME( AmMin, Vol 86) PHYS. PROP.(AmMin, V 86, p 197) OPTIC PROP.(AmMin, V 86, p 197)
Help on See Also: See Also: Links to other databases for Henrymeyerite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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Dana No: Strunz No: 04.DK.05





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