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
GUID
(UUID V4):
(UUID V4):
16923b58-aa32-4f69-820c-5afd65def50f
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 |
---|---|---|
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)
Crystallography of Hexamolybdenum
Crystal System:
Hexagonal
Class (H-M):
6/mmm (6/m 2/m 2/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.
Associated Minerals at Type Locality:
Synonyms of Hexamolybdenum
Common Associates
Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
1.AE. | Vanadium | V |
1.AE.05 | Molybdenum | Mo |
1.AE.05 | Chromium | Cr |
1.AE.05 | Iron | Fe |
1.AE.05 | Tungsten | W |
1.AE.05 | UM2001-06-E:CrFeNi | Fe7Cr2Ni |
1.AE.10 | Taenite | (Fe,Ni) |
1.AE.10 | Tetrataenite | FeNi |
1.AE.10 | Antitaenite | Fe3Ni |
1.AE.15 | Chromferide | Fe3Cr1-x (x=0.6) |
1.AE.15 | Ferchromide | Cr3Fe1-x |
1.AE.15 | Wairauite | CoFe |
1.AE.20 | Awaruite | Ni3Fe |
1.AE.25 | Jedwabite | Fe7(Ta,Nb)3 |
1.AE.30 | 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.
Search Engines:
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
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).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Australia | |
| Ma et al. (2014) |
Germany | |
| Harald G. 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) |
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Danubian fluvial placer, Straubing, Lower Bavaria, Bavaria, Germany