Sample No.: ALHA78114

Location: Allan Hills

Field No.: 382

Weight (gms): 808.1

Meteorite Type: L6 Chondrite

Physical Description:

The B surface of the meteorite is planar and contains small patches of dull black Fusion crust on a shiny reddish-brown background, which may possibly be severely weathered fusion crust. All other surfaces of the specimen are totally covered with dull black fusion crusts with the exception of some small areas on the S surface where it has been removed. Small regmaglypts are present on the S surface. Many shallow voids are present on the exterior of this sample. One large fracture that appears to penetrate the stone was noted. This specimen was cleaved along the large crack, which exposed mostly weathered material. The unweathered material exposed during processing is light gray and flecked with light and dark, ~1 mm., clasts.

Petrographic Description: Brian Mason

Chondrules are sparse and ill-defined, their borders tending to merge with the granular groundmass which consists mainly of olivine and pyroxene, with minor subequal amounts of nickel-iron and troilite, plagioclase, and accessory chromite. A moderate amount of limonitic staining is associated with the nickel-iron grains. Microprobe analyses give the following compositions: olivine, Fa25; pyroxene, Fs20; Plagioclase, An10. The meteorite is an L6 chondrite. ALHA78114 is another L6 chondrite, similar to ALHA78112 in all respects.