History: The meteorite was found by Michael Farmer in November 2006. An additional 41 pieces within and area of 0.5
miles by 3.5 miles were collected by Michael Farmer and Robert Ward.
Physical characteristics: The meteorite was found as a small strawnfield comprising of 42 pieces with a total mass of 2.48 kilograms. The surface of the meteorite is
weathered, it displays exposed crystals and the metal portion is gray to reddish-brown.
Petrography: (D. Schrader, UAz) The meteorite is predominately Fe,Ni metal, with angular to sub-rounded olivine crystals ranging in apparent long axis from
0.02 to 4 cm. The crystals are sometimes associated with schriebersite, troilite, chromite, and calcium-phosphate. One area of chromite borders both olivine and Fe,Ni metal
and contains angular and rounded troilite grains.
Mineral compositions and geochemistry: (D. Schrader, K. Domanik, and D. Hill, UAz) Fo83.84-87.32 (average = Fa86.65±0.38);
kamacite (Ni=4.69±1.16, Co=0.57±0.04 [averages, all wt%]), and high Ni Fe,Ni metal (up to Ni=46.49 wt%); schriebersite; troilite; Ca-phosphate; chromite. Bulk
composition: D. Schrader, D. Laurenta, and J. Goreva, UAz; ICP-MS) Fe=87.67, Ni=10.98, Co=0.56, S=0.36, P=0.43 [all wt%]; Cr=3043.0, Ge=4.4; Ga=11.2, Ir=bdl, Cu=235.2,
Pt=10.4, As=13.9 [all ppm]; Se=2234, Mo=34879, Ru=2230, Pd=1133, Rh=361, V=11294, Sb=91, Rc=120, Mn=307125, Ag=553, and Zn=2257 [all ppb]. Ir=bdl, Os=bdl.
Classification: Pallasite (Main-group)
Type specimens: A total of 21 g of sample are on deposit at UAz. Robert Ward holds the main mass. |