Rainy River        48.72°N, 94.57°W

Ontario, Canada

Find: 2000

Classification: Iron, IAB complex

History: The meteorite was found in 2000 by Robert Milton Weaver on his farm located near the town of Rainy River, Ontario, Canada, and subsequently given to Clive Trevor Williams, who gave it to his grandson, Howard Williams (the present owner). The location of the farm is unknown by the present owner of the meteorite. Consequently, the coordinates of the town are given as the nominal location of the find.

Physical characteristics: The meteorite is a single mass, of roughly ellipsoidal shape with maximum dimensions 17.4 cm × 13.2 cm × 9.5 cm with a mass of 3.26 kg. The exterior is completely covered with an iron oxide crust.

Petrography: Stephen A. Kissin (LHU) The meteorite is an octahedrite, although owing to the coarseness and irregular width of the kamacite lamellae, the structure is difficult to discern. The lamellae are somewhat curved and stubby with L:W = 3:1 to 4:1 and widths (uncorrected) from ~2 mm to >3 mm. The kamacite lamellae contain abundant Neumann lines and are polygonalized as a result of shock. Residual taenite lamellae are very thin (<1 mm) and frequently have been heavily oxidized. A single small area of net plessite was observed. Schreibersite in the form of rhabdite is abundant, as well as a few small wormy, globular grains. Troilite is sparsely present as thin wormy grain between kamacite lamellae.

Geochemistry: Mineral compositions and geochemistry: INAA analysis Ni= 7.23 wt%, Co=0.463 wt%, Sb= 410 ppb, Cr=19, Cu=114, Ga=91, Ge=170, As 13.9, W=<10, Re=0.64, Ir=3.87, Pt=7.8, Au=1.47 (all in ppm).

Classification: Iron (IAB complex). The meteorite is moderately shocked as evidenced by the presence of Neumann lines and polygonalization of kamacite. Some of the kamacite lamellae are deformed by minor bending. Hardness of kamacite (VHN=254±13) and taenite (VHN= 492±28) is also evidence of work hardening due to shock.

Specimens: type specimen 47.3 g polished slab, ROM. Main mass 3.20 kg retained by the owner, Howard Williams.