Henrymeyerite Mineral Data

General Henrymeyerite Information

Chemical Formula:

BaFe++Ti7O16

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

Empirical Formula:

BaFe²⁺Ti₇O₁₆

Environment:

From a vug in a carbonatite vein. Late stage mineral in carbonitite rocks. Hollandite group

IMA Status:

Approved IMA 1999 (Dana # Added)

Locality:

Kovdor alkaline ultramafic Complex, Kola Peninsula Russia. Link to MinDat.org Location Data.

Name Origin:

Named for Prof. Henry. O. A. Meyer (1937-1995).

Synonym:

IMA1999-016

Henrymeyerite Image

Images:

Click Here for Larger Henrymeyerite Image

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

Images:

Henrymeyerite

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

Axial Ratios:

a:c = 1:0.28995

Cell Dimensions:

a = 10.219, c = 2.963, Z = 1; V = 309.42 Den(Calc)= 4.21

Crystal System:

Tetragonal - DipyramidalH-M Symbol (4/m) Space Group: I 4/m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 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),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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H - Help Screen
I - Data Info
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Help on Above

Mitchell R H , Yakovenchuk V N , Chakhmouradian A R , Burns P C , Pakhomovsky Y A , The Canadian Mineralogist , 38 (2000) p.617-626, Henrymeyerite, a new hollandite-type Ba-Fe titanate from the, Kovdor Complex, Russia, Locality: Kovdor Complex, Russia

Physical Properties of Henrymeyerite

Color:

Black.

Density:

Diaphaneity:

Opaque

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Acicular - Occurs as needle-like crystals.

Hardness:

5-6 - Between Apatite and Orthoclase

Luster:

Adamantine

Streak:

reddish brown

Optical Properties of Henrymeyerite

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

RL Bireflectance:

Weak, brownish.

RL Color:

Grayish brown.

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**
Relative Intensity	0%	80%	100%	160%	240%	320%	400%	480%	560%	640%	720%	770%
R₁
R₂

Calculated Properties of Henrymeyerite

Electron Density:

Bulk Density (Electron Density)=3.91 gm/cc
note: Specific Gravity of Henrymeyerite =4.21 gm/cc.

Fermion Index:

Fermion Index = 0.08
Boson Index = 0.92

Photoelectric:

PE_{Henrymeyerite}= 85.17 barns/electron
U=PE_{Henrymeyerite} x rElectron Density= 332.80 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Henrymeyerite is Not Radioactive

Henrymeyerite Classification

Dana Class:

07.09.01.06 (07)Multiple Oxides

(07.09)Dana Type

(07.09.01)Cryptomelane Group (Hard black, fine-grained)

07.09.01.01 Hollandite Ba(Mn,Mn)8O16 I2/m 2/m

07.09.01.02 Cryptomelane K(Mn,Mn)8O16 I2/m 2/m

07.09.01.03 Manjiroite (Na,K)(Mn,Mn)8O16•n(H2O) I 4/m 4/m

07.09.01.04 Coronadite Pb(Mn,Mn)8O16 I2/m 2/m

07.09.01.05 Strontiomelane! SrMn6Mn2O16 P 2₁/m 2/m

07.09.01.06 Henrymeyerite! BaFeTi7O16 I 4/m 4/m

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

References:

NAME( AmMin, Vol 86) PHYS. PROP.(AmMin, V 86, p 197) OPTIC PROP.(AmMin, V 86, p 197)

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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Print or Cut-and-Paste your Henrymeyerite Specimen Label here :

Henrymeyerite

BaFe++Ti7O16
Dana No: 07.09.01.06 Strunz No: 04.DK.05
Locality:

Notes: