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Bath meteorite, Brown Co., South Dakota, USA

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Latitude & Longitude (WGS84): 45° 25' North , 98° 19' West
Latitude & Longitude (decimal): 45.41667,-98.31667
Non-native locality type:Meteorite
Meteorite Class:H4 chondrite meteorite
Meteoritical Society Class: H4
Metbull:View entry in Meteoritical Bulletin Database
Köppen climate type:Dfa : Hot-summer humid continental climate

Ordinary Chondrite, brecciated (H4, br)
Fall, 29 August 1892; 21.2 kg

While a farmer and his soon were stacking hay, a series of detonation caused them to look up just before a meteoritic stone fell ~100 m away and penetrated the hardened soil to a depth of ~40 cm. A few small pieces fell away during the descent, but the largely intact stone (and its fusion crust) were soon recovered. With the help of a hand lens inspection of the interior reveals an abundance of chondrules (0.2-1.0 mm) and small Fe-Ni grains. Very thin black veinlets are also present. Olivine and orthopyroxene dominate both chondrules and matrix with barred olivine (BO) and radiating pyroxene (RP) chondrules particularly evident. Lesser amounts of albitic plagioclase, clinopyroxene, kamacite, taenite, and troilite are present. Minor or very minor amounts of chromite and several other opaques are also reported. Although Bath is a witnessed fall, limonite stains are reported in more than one account and are visible in posted photographs. They are most particularly associated with Fe-Ni metal.

Bath is the 8th most massive of 51 witnessed falls listed exactly as 'H4' chondrites at the Meteoritical Bulletin Database (Feb 2016). The entire group of H group of ordinary chondrites (ordinary chondrites relatively low in total Iron) account for a little more than 30% of all meteorite falls. [H4 chondrites were formerly known as olivine-bronzite chondrites].

After recovery, the Bath mass was well distributed. As late as 2000, five separate institutions retained from 1-3 kg of specimen(s) in their collections.

Mineral List

7 valid minerals.

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Farrington, O.C. (1915). Catalogue of the meteorites of North America: Memoirs of the National Academy of Sciences, Vol. 13: Washington. 545 pages.

Merrill, G.P. (1919) Second report on researches on the chemical and mineralogical composition of meteorites. Memoirs of the National Academy of Sciences 19(4):p.1.

Mason B. (1963) Olivine composition in Chondrites: Geochim. Geochim. et Cosmochim. Acta 27, 1011-1023.

Mason, B. & Wiik, H.B. (1966) The Composition of the Bath, Frankfort, Kakangari, Rose City, and Tadjera Meteorites. American Museum Novitates, No.2272, New York. 24 pp. (Dec 1966).

Taylor, G.J. (1968) On the Thermal History of Chondrites: Master's Thesis: Rice University. 73 pages.

Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.

Graham, A. L., Bevan, A. W. R. & Hutchison, B. (1985) Catalogue of Meteorites (4/e). University of Arizona Press: Tucson.

Grady, M.M (2000). Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge; New York; Oakleigh; Madrid; Cape Town. 689 pages.

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