Henrymeyerite
A valid IMA mineral species
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About Henrymeyerite
Henry O. A. Meyer
Formula:
Ba(Ti4+7Fe2+)O16
Colour:
Greyish-brown, black
Lustre:
Adamantine
Hardness:
5 - 6
Specific Gravity:
4.0
Crystal System:
Tetragonal
Member of:
Name:
Named in honor of Henry Oostenwald Albetjin Meyer (1937 - 15 June 1995, West Lafayette, Indiana, USA), Professor at Purdue University, for his studies of diamonds.
This page provides mineralogical data about Henrymeyerite.
Unique Identifiers
Mindat ID:
7084
Long-form identifier:
mindat:1:1:7084:9
IMA Classification of Henrymeyerite
Approved
Approval year:
1999
First published:
2000
Classification of Henrymeyerite
4.DK.05b
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
K : With large (+- medium-sized) cations; tunnel structures
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
K : With large (+- medium-sized) cations; tunnel structures
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Hmy | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Hnm | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
| Hmy | Warr (2020) | Warr, L.N. (2020) Recommended abbreviations for the names of clay minerals and associated phases. Clay Minerals, 55, 261–264 doi:10.1180/clm.2020.30 |
Physical Properties of Henrymeyerite
Adamantine
Transparency:
Opaque
Colour:
Greyish-brown, black
Streak:
Reddish-brown
Hardness:
5 - 6 on Mohs scale
Tenacity:
Very brittle
Fracture:
Splintery
Density:
4.0(1) g/cm3 (Measured) 4.20(1) g/cm3 (Calculated)
Optical Data of Henrymeyerite
Bireflectance:
Weak bireflectance in shades of brown
Reflectivity:
| Wavelength | R1 (%) | R2 (%) |
|---|---|---|
| 420nm | 13.0% | 14.2% |
| 440nm | 12.2% | 13.4% |
| 460nm | 12.0% | 13.0% |
| 480nm | 11.9% | 12.8% |
| 500nm | 11.8% | 12.7% |
| 520nm | 11.8% | 12.6% |
| 540nm | 11.6% | 12.6% |
| 560nm | 11.5% | 12.6% |
| 580nm | 11.4% | 12.7% |
| 600nm | 11.4% | 12.9% |
| 620nm | 11.4% | 13.2% |
| 640nm | 11.4% | 13.5% |
| 660nm | 11.3% | 13.8% |
| 680nm | 11.3% | 14.1% |
| 700nm | 11.2% | 14.4% |
| 720nm | 11.2% | 14.5% |
Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 14.5%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Greyish brown, grayish white
Chemistry of Henrymeyerite
Mindat Formula:
Ba(Ti4+7Fe2+)O16
Element Weights:
Elements listed:
Crystallography of Henrymeyerite
Crystal System:
Tetragonal
Class (H-M):
4/m - Dipyramidal
Space Group:
I4/m
Cell Parameters:
a = 10.219(3) Å, c = 2.963(1) Å
Ratio:
a:c = 1 : 0.29
Unit Cell V:
309.42 ų (Calculated from Unit Cell)
Z:
1
Morphology:
Prismatic acicular, with forms {100}, {110} and {101}.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.232 Å | (100) |
| 2.236 Å | (40) |
| 2.486 Å | (34) |
| 1.598 Å | (33) |
| 1.901 Å | (31) |
| 1.405 Å | (26) |
| 1.703 Å | (22) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 35 : Ultra-alkali and agpaitic igneous rocks | |
| 36 : Carbonatites, kimberlites, and related igneous rocks |
Geological Setting:
mantle xenoliths
Type Occurrence of Henrymeyerite
General Appearance of Type Material:
Acicular crystals less than 0.2 mm in length.
Place of Conservation of Type Material:
Geological Museum of the Kola Science Center in Apatity, Russia.
Geological Setting of Type Material:
Occurs in a vein of tetra-ferriphlogopite – calcite – dolomite carbonatite.
Associated Minerals at Type Locality:
Synonyms of Henrymeyerite
Other Language Names for Henrymeyerite
Relationship of Henrymeyerite to other Species
Member of:
Other Members of Priderite Group:
| Kopernikite | K(Ti7Cr3+)O16 | Tet. 4/m : I4/m |
| Mannardite | Ba(Ti4+6V3+2)O16 | Tet. 4/m : I41/a |
| Priderite | K(Ti4+7Fe3+)O16 | Tet. 4/m : I4/m |
| Redledgeite | Ba(Ti4+6Cr3+2)O16 | Tet. |
| 'UM1994-09-O:CrKTi' | Compare UM1994-07-O:BaCrFeMgTi and UM1994-08-O:CaFeKMgTi. |
Common Associates
Related Minerals - Strunz-mindat Grouping
| 4.DK.K | Thalliomelane | Tl(Mn4+7.5Cu2+0.5)O16 |
| 4.DK. | Ferrihollandite | Ba(Mn4+6Fe3+2)O16 |
| 4.DK. | Kopernikite | K(Ti7Cr3+)O16 |
| 4.DK.4.DK. | Ferricoronadite | Pb(Mn4+6Fe3+2)O16 |
| 4.DK.05a | Manjiroite | Na(Mn4+7Mn3+)O16 |
| 4.DK.05b | Mannardite | Ba(Ti4+6V3+2)O16 |
| 4.DK.05b | Redledgeite | Ba(Ti4+6Cr3+2)O16 |
| 4.DK.05 | Akaganeite | (Fe3+,Ni2+)8(OH,O)16Cl1.25 · nH2O |
| 4.DK.05a | Coronadite | Pb(Mn4+6Mn3+2)O16 |
| 4.DK.05a | Hollandite | Ba(Mn4+6Mn3+2)O16 |
| 4.DK.05a | Cryptomelane | K(Mn4+7Mn3+)O16 |
| 4.DK.05a | Strontiomelane | Sr(Mn4+6Mn3+2)O16 |
| 4.DK.05b | Priderite | K(Ti4+7Fe3+)O16 |
| 4.DK.10 | Romanèchite | (Ba,H2O)2(Mn4+,Mn3+)5O10 |
| 4.DK.10 | Todorokite | (Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Henrymeyerite
mindat.org URL:
https://www.mindat.org/min-7084.html
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References for Henrymeyerite
Reference List:
Mitchell, R. H., Yakovenchuk, V. N., Chakhmouradian, A. R., Burns, P. C., Pakhomovsky, Y. A. (2000) Henrymeyerite, a new hollandite-type Ba-Fe titanate from the Kovdor Complex, Russia. The Canadian Mineralogist, 38 (3) 617-626 doi:10.2113/gscanmin.38.3.617
Mandarino, Joseph A. (2002) New minerals. The Canadian Mineralogist, 40 (1) 247-254 doi:10.2113/gscanmin.40.1.247
Localities for Henrymeyerite
Showing 16 localities.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Antarctica | |
| Kogarko et al. (2007) |
Canada | |
| Canadian Museum of Nature collection |
| Piilonen et al. (2025) | |
| Garth Platt (1994) |
Czech Republic | |
| Elsevier. +3 other references |
Greenland | |
| |
India | |
| Kaur et al. (2024) |
Japan | |
| NISHIO-HAMANE et al. (2025) |
Russia | |
| Савельева et al. (2021) |
| Mikhailova et al. (2007) |
| Mitchell et al. (2000) +1 other reference |
| Excalibur Mineral Corp. - Mineral News |
| Mikhailova et al. (2007) | |
USA | |
| Chakhmouradian et al. (1999) |
| Mitchell (2000) +1 other reference |
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Yukspor Mountain, Murmansk Oblast, Russia