Hexamolybdenum
A valid IMA mineral species
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About Hexamolybdenum
Formula:
(Mo,Ru,Fe,Ir,Os)
Specific Gravity:
11.90 (Calculated)
Crystal System:
Hexagonal
Name:
The name hexamolybdenum refers to the symmetry (primitive hexagonal) and composition (Mo-rich).
Type Locality:
Dimorph of:
A Mo-dominant alloy. The Mo analogue of ruthenium, osmium, hexaferrum and garutiite.
Reported as a link between (1) Os- and/or Ru- and (2) Fe-rich meteoritic alloys. It may be a derivative of (1) and a precursor of (2).
Reported as a link between (1) Os- and/or Ru- and (2) Fe-rich meteoritic alloys. It may be a derivative of (1) and a precursor of (2).
Unique Identifiers
Mindat ID:
32286
Long-form identifier:
mindat:1:1:32286:5
IMA Classification of Hexamolybdenum
Classification of Hexamolybdenum
1.AE.05
1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
A : Metals and Intermetallic Alloys
E : Iron-chromium family
1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
A : Metals and Intermetallic Alloys
E : Iron-chromium family
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Hmo | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Pronunciation of Hexamolybdenum
Pronunciation:
| Play | Recorded by | Country |
|---|---|---|
| Jolyon Ralph | United Kingdom |
Physical Properties of Hexamolybdenum
Density:
11.90 g/cm3 (Calculated)
Chemistry of Hexamolybdenum
Mindat Formula:
(Mo,Ru,Fe,Ir,Os)
Element Weights:
| Element | % weight |
|---|---|
| Mo | 100.000 % |
Calculated from ideal end-member formula.
Crystallography of Hexamolybdenum
Crystal System:
Hexagonal
Class (H-M):
6/mmm(6/m2/m2/m) - Dihexagonal Dipyramidal
Space Group:
P63/mmc
Setting:
P63/mmc
Cell Parameters:
a = 2.7506 Å, c = 4.4318 Å
Ratio:
a:c = 1 : 1.611
Unit Cell V:
29.04 ų
Z:
2
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.382 Å | (24) |
| 2.216 Å | (26) |
| 2.098 Å | (100) |
| 1.622 Å | (15) |
| 1.375 Å | (17) |
| 1.255 Å | (18) |
| 1.169 Å | (20) |
| 1.150 Å | (14) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 1: Primary nebular phases | 4.567-4.561 |
| 3 : Solar nebular condensates (CAIs, AOAs, URIs) | >4.565 |
| Stage 2: Planetesimal differentiation and alteration | 4.566-4.550 |
| 6 : Secondary asteroid phases | 4.566-4.560 |
Type Occurrence of Hexamolybdenum
General Appearance of Type Material:
Grains and crystals, ca. 1 to ca. 3 microns in diameter.
Place of Conservation of Type Material:
National Museum of Natural History, Washington, D.C., USA, number USNM 3509HC12.
Geological Setting of Type Material:
In an ultrarefractory inclusion in a carbonaceous
chondrite meteorite.
chondrite meteorite.
Associated Minerals at Type Locality:
Synonyms of Hexamolybdenum
Other Language Names for Hexamolybdenum
German:Hexamolybdenum
Common Associates
Associations Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
| 1.AE. | Native Vanadium | V |
| 1.AE.05 | Native Chromium | Cr |
| 1.AE.05 | Native Tungsten | W |
| 1.AE.05 | 'Native Molybdenum' | Mo |
| 1.AE.05 | 'UM2001-06-E:CrFeNi' | Fe7Cr2Ni |
| 1.AE.05 | Native Iron | Fe |
| 1.AE.10 | Taenite | (Ni,Fe) |
| 1.AE.10 | Tetrataenite | FeNi |
| 1.AE.10 | 'Antitaenite' | Fe3Ni |
| 1.AE.15 | Chromferide | Fe3Cr1-x (x = 0.6) |
| 1.AE.15 | Wairauite | CoFe |
| 1.AE.15 | Ferchromide | Cr3Fe1-x |
| 1.AE.20 | Awaruite | Ni3Fe |
| 1.AE.25 | Jedwabite | Fe7(Ta,Nb)3 |
| 1.AE.30 | 'Native Manganese' | Mn |
| 1.AE.35 | Nisnite | Ni3Sn |
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 Hexamolybdenum
mindat.org URL:
https://www.mindat.org/min-32286.html
Please feel free to link to this page.
Please feel free to link to this page.
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External Links:
Mineral Dealers:
References for Hexamolybdenum
Reference List:
Ma, C., Beckett, J.R., Rossman, G.R. (2009) Allendeite and Hexamolybdenum: Two New Ultra-Refractory Minerals in Allende and Two Missing Links. 40th Lunar and Planetary Science Conference.
Localities for Hexamolybdenum
Showing 6 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.
Australia | |
| Ma et al. (2014) |
Germany | |
| Dill et al. (2009) |
| Oberthür et al. (2016) |
Greece | |
| Ifandi et al. (2018) +1 other reference |
Mexico (TL) | |
| Ma et al. (2014) |
Northwest Africa Meteorites | |
| Ma et al. (2011) |
Quick NavTopAbout HexamolybdenumUnique IdentifiersIMA Classification Classification Mineral SymbolsPronunciation Physical Properties Chemistry Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Allende meteorite, Pueblito de Allende, Chihuahua, Mexico