.269 grams WINNER Meteorite Ordinary chondrite (L3.9) fragment from South Dakota

Description

Winner
Basic information
Name:
Winner
This is an OFFICIAL meteorite name.
Abbreviation:
There is no official abbreviation for this meteorite.
Observed fall:
No
Year found:
2004
Country:
United States
Mass:
8.5 kg
Classification
history:
Meteoritical Bulletin:
(2013)
L3.9
Recommended:
L3.9
This is 1 of 29 approved meteorites classified as L3.9.
Comments:
Approved 27 Sep 2013
Writeup
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.
Geochemistry
: (C. Agee and N. Muttik,
UNM
) Olivine Fa
26.0±2.7
, Fe/Mn=50±6, n=10; orthopyroxene Fs
21.7±0.8
Wo
1.4±0.2
, Fe/Mn=30±2, n=5, clinopyroxene Fs
10.1±1.8
Wo
44.3±1.0
, Fe/Mn=29±1, n=2.
Classification
: Ordinary chondrite (L3.9), weathering grade W2.
Specimens
: 32.1 g including a probe mount on deposit at
UNM
, the finder Chris Novotney holds 20 g,
ASU
holds 7.8 g, KD Meteorites holds the main mass.
State/Prov/County:
South Dakota
Date:
Aug 2004
Latitude:
43.3637137
Longitude:
-99.9197665
Mass (g):
8502
Pieces:
1
Class:
L3.9
Weathering grade:
W2
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