Henrymeyerite Mineral Data (original) (raw)

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:

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

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),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
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:

4

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	R 2		∑ 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

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:

PEHenrymeyerite = 85.17 barns/electron
U=PEHenrymeyerite 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

Search for Henrymeyerite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Henrymeyerite :

A Bijoux Google Search for Henrymeyerite
Adam's Minerals Google Search for Henrymeyerite
Cape Minerals Google Search for Henrymeyerite
Dakota Matrix Minerals Google Search for Henrymeyerite
Excalibur Mineral Corp. Google Search for Henrymeyerite
Exceptional Minerals Google Search for Henrymeyerite
John Betts Fine Minerals Search for Henrymeyerite
McDougall Minerals Google Search for Henrymeyerite
Mineral News Website Link
Rock and Mineral Shows Google Search for Henrymeyerite
Weinrich Minerals, Inc. Google Search for Henrymeyerite

Ask about Henrymeyerite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espa�ol

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: