Found August 1975
40° 27.4′ N., 102° 34.7′ W. A 15.53 kg stone was found by Mr. Pat Kain 21 km SSE of Haxtun, Colorado while he was plowing a wheat field (Rubin and Krot, 1993). The three mineralogical classification parameters yield three different group assignments for Haxtun: Group of silicate minerals, (Mg,Fe)2SiO4, with the compositional endpoints of forsterite (Mg2SiO4) and fayalite (Fe2SiO4). Olivine is commonly found in all chondrites within both the matrix and chondrules, achondrites including most primitive achondrites and some evolved achondrites, in pallasites as large yellow-green crystals (brown when terrestrialized), in the silicate portion Click on Term to Read More (Fa21.6) suggests H/L; low-Ca A class of silicate (SiO3) minerals that form a solid solution between iron and magnesium and can contain up to 50% calcium. Pyroxenes are important rock forming minerals and critical to understanding igneous processes. For more detailed information, please read the Pyroxene Group article found in the Meteoritics & Classification Click on Term to Read More (Fs17.8) suggests H; and cobalt in More common than taenite, both taenite and kamacite are Ni-Fe alloys found in iron meteorites. Kamacite, α-(Fe,Ni), contains 4-7.5 wt% Ni, and forms large body-centered cubic crystals that appear like broad bands or beam-like structures on the etched surface of a meteorite; its name is derived from the Greek word Click on Term to Read More (7.5 mg/g) suggests L. Haxtun shares this intermediate, equilibrated H/L4 classification with Yamato 74645.
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Photo courtesy of Peter Marmet
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