| |
 |
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:
|
|
|
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 - Dipyramidal H-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), |
| |
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 |
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: |
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 :
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
Español
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:
|
|
| |
| |
|
| |
Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.
