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Ness County (1894) meteorite, Ness Co., Kansas, USA

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Latitude & Longitude (WGS84): 38° 30' North , 99° 36' West
Latitude & Longitude (decimal): 38.50000,-99.60000
Non-native locality type:Meteorite
Meteorite Class:L6 chondrite meteorite
Meteoritical Society Class: L6
Metbull:View entry in Meteoritical Bulletin Database
Köppen climate type:Cfa : Humid subtropical climate

Ordinary chondrite, (L6, br)
Find,1894; 17 kg

A triangular mass had been found near a dry creek bed and other stones were found later. The fusion crust was eroded away and the dark interior surface is often browned by stains, but small grains of Fe-Ni metal were still apparent. The interior is coarsely granulated with rare and indistinct chondritic structures, but clearly brecciated with fractured crystals and interstitial glass. Careful examination reveals grains of olivine [Fa25], orthopyroxene [Fs22]('Bronzite'), albitic plagioclase, and very small troilite grains. Olivine grains reach diameters of 0.2-0.4 mm. Accessory chromite is present, invariably associated with the metal and/or troilite. Some highly shocked aggregates even have ringwoodite- and majorite-bearing fragmental aggregates. Rubin and others have argued that Ness County (1894) belongs to a strewn field that also includes the Wellmanville and Franklinville stones.

The Field Museum of Natural History (Chicago) obtained and has retained a large fraction of the Ness County mass. However, moderate-sized masses have also been obtained by the American Museum of Natural History (New York), the United States National Museum (Washington), Arizona State University, and the University of California in Los Angeles.

Mineral List

8 valid minerals.

Meteorite/Rock Types Recorded

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

Merrill, G.P. (1916) Handbook and Descriptive Catalogue of the Meteorite Collections in the U.S. National Museum. Bull. U. S. Natl. Museum, No.94, Washington. 207 pp., 41 pls.

Prior, G.T. (1923) Catalogue of Meteorites: with special reference to those represented in the collection of the British Museum of Natural History. Richard Clay & Sons, Limited: Bungay, Suffolk.

Knox Jr., R. (1963) The microstructure of several stony meteorites: Geochimica et Cosmochimica Acta 27(3): 261-268. (March 1963).

Mason, B. (1963) Olivine in ordinary chondrites. Geochimica et Cosmochimica Acta 27(9): 1011-1023. (Sept 1963).

Keil, K. & Fredriksson, K. (1964) The Fe, Mg and Ca Distribution in Coexisting Olivines and Rhombic Pyroxenes of Chondrites. Journal of Geophysical Research Atmospheres 69 (16): 3487-3515. (August 1964).

van Schmus, W.R. & Koffman, D.M. (1967) Equilibration Temperatures of Iron and Magnesium in Chondritic Meteorites: Science, New Series 155 (3765): 1009-1011. (Feb 1967).

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

Rubin, A.E. & Read, W.F. (1984) The Brownell and Ness County (1894) L6 Chondrites: Further sorting-out of Ness County meteorites. Meteoritics 19(3):153-160. (Sept 1984).

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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