The Vermillion meteorite is a pallasite (stony-iron) meteorite and one of two members of the pyroxene pallasite grouplet.
The meteorite was found near and was named after Vermillion, 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.
Vermillion meteorite consists of around 86 volume-% meteoric iron and 14 % silicate minerals. The silicates include olivine (93% of silicates), orthopyroxene (5%), chromite (1.5%) and merrillite (0.5%). Other accessory minerals include troilite, whitlockite, and cohenite.
The Vermillion meteorite is classified as a pyroxene pallasite because it contains pyroxene as an accessory mineral and shares a distinct oxygen isotope signature with Yamato 8451. Some studies also object to this grouping, referring to the differences in siderophile trace elements and the occurrence of cohenite in the Vermillion meteorite.
- ^ a b c Binze, D.S. Lauretta, H.Y. McSween, Jr., editors ; foreword by Richard P.; T. J. McCoy, A. N. Krot (2006). "Systematics and Evaluation of Meteorite Classification". Meteorites and the early solar system II. Tucson: University of Arizona Press. pp. 19–52. ISBN 978-0816525621. Retrieved 15 December 2012.
- ^ "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. Retrieved 29 December 2012.
- ^ a b Boesenberg, 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. doi:10.1111/j.1945-5100.2000.tb01460.x.