Diamond Valley 003 (DV 003)        39°56.087’N, 115°59.005’W

Eureka County, Nevada, United States

Found: 16 May 2011

Classification: Ordinary chondrite (H6)

History: A single stone found by Mr. Richard Kimbell on the Diamond Lake bed north of Eureka, Nevada, on May 16, 2011.

Physical characteristics: The stone has a dark brownish-black exterior which represents a combination of weathered fusion crust and weathering rind. Elaborate shock veins with entrained silicate clasts are visible on the brown-gray cut surface.

Petrography: (M. Hutson, Cascadia). Two thin sections are edged with fusion crust that grade into thick melt veins, which cut across and occupy most of the area of the section. The veins include partially weathered sulfide and only traces metal. Some areas between melt regions show discernible chondrules that are fairly integrated with their surroundings, but most regions appear granular with few readily discernible chondrules, suggestive of a type 6 chondrite. Olivine grains show strong mosaic extinction with multiple planar fractures and planar deformation features, and feldspathic areas are maskelynite, indicative of an S5 shock stage.

Geochemistry: Olivine (Fa_19.6±0.4, n=23) and low-Ca pyroxene (Fs_17.7±0.8Wo_1.4±0.2, n=18).

Specimens: A single mass of 21.0 g and 2 polished thin sections are on deposit at Cascadia. Mr. Richard Kimbell holds the main mass.