Vermillion meteorite
| Vermillion | |
|---|---|
| Type | Achondrite,pallasite |
| Grouplet | Pyroxene pallasite grouplet |
| Composition | Meteoric iron(~86%) silicates (~14%) |
| Country | United States |
| Region | Kansas |
| Coordinates | 39°44′11″N96°21′41″W/ 39.73639°N 96.36139°W |
| Observed fall | No |
| Found date | 1991 |
| TKW | 34.36 kilograms (75.8 lb) |
TheVermillion meteoriteis apallasite(stony-iron) meteorite and one of two members of thepyroxene pallasite grouplet.[1]
Discovery
[edit]The meteorite was found near and was named afterVermillion,Marshall County,Kansas.It was found by two farmers while planting on a grain field in 1991. It was recognized as a meteorite and first described in 1995.[2]
Mineralogy
[edit]Vermillion meteorite consists of around 86volume-%meteoric ironand 14%silicate minerals.The silicates includeolivine(93% of silicates),orthopyroxene(5%),chromite(1.5%) andmerrillite(0.5%).[3]Other accessory minerals includetroilite,whitlockite,[1]andcohenite.[4]
Classification
[edit]The Vermillion meteorite is classified as a pyroxene pallasite because it contains pyroxene as an accessory mineral and shares a distinctoxygen isotopesignature withYamato 8451.[1]Some studies also object to this grouping, referring to the differences insiderophiletrace elementsand the occurrence of cohenite in the Vermillion meteorite.[4]
See also
[edit]References
[edit]- ^abcM. K. Weisberg; T. J. McCoy; A. N. Krot (2006). "Systematics and Evaluation of Meteorite Classification". In D.S. Lauretta; H.Y. McSween Jr. (eds.).Meteorites and the early solar system II(PDF).Tucson:University of Arizona Press.pp. 19–52, 942.ISBN978-0816525621.Retrieved17 October2013.
foreword by Richard P. Binze
- ^"Vermillion".Meteoritical Society.
- ^Boesenberg, J. S.; M. Prinz; M. K. Weisberg; A. M. Davis; R. N. Clyton; T. K. Mayeda (1995)."Pyroxene Pallasites: A New Pallasite Grouplet".Meteoritics.30:488–489.Bibcode:1995Metic..30R.488B.Retrieved29 December2012.
- ^abBoesenberg, Joseph S.; Davis, Andrew M.; Prinz, Martin; Weisberg, Michael K.; Clayton, Robert N.;Mayeda, Toshiko K.(1 July 2000). "The pyroxene pallasites, Vermillion and Yamato 8451: Not quite a couple".Meteoritics & Planetary Science.35(4): 757–769.Bibcode:2000M&PS...35..757B.doi:10.1111/j.1945-5100.2000.tb01460.x.