Haxtun

Phillips County, Colorado, USA

Found 1975 August

Ordinary chondrite (H/L4 or L4)

A weathered stone (weathering grade W4, see Wlotzka, 1993) of 15.5 kg was found in a wheat field. Research material, thin section, classification as H/L4 and analysis, olivine Fa21.6 ± 0.4, pyroxene Fs17.8 ± 1.3Wo0.6 ± 0.4, Co in kamacite 7.5 ± 0.4 mg/g, Alan E. Rubin, Institute of Geophysics and Planetary Physics, University of California, Los Angeles, California 90024-1567, USA. The bulk analysis gives an L classification: total Fe 20.9 ± 0.5% (avg. of 5 samples), XRF-analysis, A. Burghele; NAanalysis: 20.5% total Fe, low siderophiles, Ni 0.92%, Co 436 ppm, Ir 0.46 ppm, Se 12.8 ppm, low alkalies, Na 0.37%, K 500 ppm, B. Spettel, both Max-Planck-Institut fur Chemie, D-55020 Mainz, Germany. Main mass and information, Blaine Reed, 907 County Road 207, #17, Durango, Colorado 81301, USA; 3.7 kg at the Oklahoma Meteorite Laboratory, P. O. Box 1923, Stillwater, Oklahoma 74076, USA.