Jungo 006        40°56.230N, 118°21.088W

Humboldt County, Nevada, United States of America

Found: 8 Oct 10

Classification: Ordinary chondrite (H5)

History: A single stone was found by Mr. Scott Johnson on the north side of the Jungo dry lake bed on October 8, 2010. Two pieces of this stone were donated to Cascadia in July 2011.

Physical characteristics: The stone has a dark brownish-black exterior which represents a combination of weathered fusion crust and weathering rind. The cut face is medium brown with reddish-colored veins.

Petrography: (M. Hutson, Cascadia). The thin section is heavily cross-cut by fractures and weathering veins. Remnant metal and sulfide suggest that some of the veins may be weathered shock veins. In the areas between the thick weathering veins, <= 50% of the opaques have been replaced. One side of the section has an abundance of relatively sharply defined chondrules, which appear to grade into a more integrated texture on the other side of the section. Olivine grains show strong undulose to mosaic extinction. A relatively large number of chromite-plagioclase intergrowths were observed, as were interconnected bands of feldspar with a fluidized texture.

Geochemistry: (M. Hutson, Cascadia) Olivine (Fa_18.2±0.5, n=16) and low-Ca pyroxene (Fs_17.1±0.6Wo_0.9±0.2, n=3).

Specimens: 13.5 g in three pieces and a polished thin section are on deposit at Cascadia. Mr. Scott Johnson holds the main mass.