Winner, 2004 South Dakota Find, L3.9 Class, Micromount

$5.00

In August 2004, a farmer in rural Tripp County South Dakota found a large rusty-looking rock in his field while refueling his tractor. It was recognized as possible meteorite and classified as a L3.9 chondrite. This rare petrologic type has only 29 known examples and is a great find for type collectors. 

Refer to the photo. The black centimeter cube is shown for scale and is not included. You are purchasing a single small fragment like the one shown. Your purchase will include a labeled gemjar for safe storage.

From the Meteoritical Bulletin entry on Winner :

Winner        43.3637137, -99.9197665

Tripp County, South Dakota, USA

Found: Aug 2004

Classification: Ordinary chondrite (L3.9)

History: In August 2004, Chris Novotney was getting off his tractor to unhook a hay rake and get gas when he noticed a rusty rock, which he collected: it was eventually identified as a meteorite. The rock stayed in the possession of Mr. Novotney until he sold it to KD Meteorites in 2013.

Physical characteristics: Single stone, exterior partially covered by dark weathered fusion crust, some oxidation, saw cut reveals numerous chondrules and clasts of variable size and color (white, green, and gray), some up to several mm, medium grained metal/sulfide throughout.

Petrography: (C. Agee, UNM) Microprobe examination of a probe mount shows many well-defined porphyritic and BO chondrules, with coarsely recrystallized mesostasis and plagioclase. Ubiquitous kamacite, taenite, troilite, and chromite. Some iron-oxide veinlets.

Classification: Ordinary chondrite (L3.9), weathering grade W2.