Sample No.: RKPA79004

Location: Reckling Peak

Field No. : 1001, 1002, 1003, 1007, 1009, 1047

Weight (gms): 370.9

Meteorite Type: H5 Chondrite

Physical Description: Roberta Score

When the Reckling Peak pebbles were brought out to be initially processed, it was found that six stones appeared identical. Field Notes state that they were found close to each other. Therefore they have been renumbered as one specimen. All six stones have the same black-brown fusion crust on at least one surface. No stone was totally covered with fusion crust, but two stones have fusion crust on a fracture surface indicating the meteorite broke up in the atmosphere upon entry. The fracture surfaces have all weathered to a reddish-brown color and have a uniform pitted surface where chondrules and clasts have been plucked away. Numerous chondrules are obvious from 3 mm to <<l mm in diameter. The interiors of the pebbles are mostly weathered with some gray colored material existing.

Petrographic Description: Brian Mason

Three sections were examined, made from different pieces of this meteorite. No significant differences were noted, and they are described as a single sample. Chondritic structure is well defined, but the margins of the chondrules are diffuse and tend to merge with the granular groundmass, which consists largely of olivine and pyroxene, with minor amounts of nickel-iron and troilite; a little plagioclase is present, as small grains not easily discerned. Weathering is indicated by brown limonitic staining throughout the sections. Microprobe analyses give the following compositions: olivine, Fa18; pyroxene, Fs16; plagioclase, An13. The meteorite is classified as an H5 chondrite.