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Timber Lake
Basic information Name: Timber Lake
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2011
Country: United States
Mass:help 8.66 kg
Meteoritical Bulletin:  MB 102  (2013)  H3
Recommended:  H3    [explanation]

This is 1 of 694 approved meteorites (plus 2 unapproved names) classified as H3.   [show all]
Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 6 Mar 2013
Writeup from MB 102:

Timber Lake        45.425°N, 101.097°W

South Dakota, USA

Found: 2011 May

Classification: Ordinary chondrite (H3)

History: Found by Mr. Richard Scherer in 2010 while he was checking part of a farm field that appeared to have been dug out by a badger. The find location is about 1.85 km west of Timber Lake in Dewey County, South Dakota.

Physical characteristics: A single, dense, dark brown stone weighing 8660 g.

Petrography: (A. Irving and S. Kuehner, UWS) Well-formed, small chondrules and fairly abundant altered metal. Minerals are olivine, orthopyroxene, clinopyroxene, sodic plagioclase, chromite, troilite and kamacite (partially altered to iron hydroxides).

Geochemistry: Olivine (Fa14.6-44.2; median Fa18, N = 12; Cr2O3 in ferroan olivine = 0.02-0.12 wt.%, mean 0.05 wt.%, sd 0.04 wt.%, N = 8), orthopyroxene (Fs16.1-18.2Wo1.11.7; core Fs6.9Wo4.6), augite (Fs6.0Wo45.6), pigeonite (Fs45.3Wo9.5).

Classification: Ordinary chondrite (H3).

Specimens: A total of 20.9 g of sample and one polished thin section are on deposit at UWB. The main mass is held by RScherer.

Data from:
  Table 0
  Line 0:
State/Prov/County:South Dakota
Date:2011 May
Mass (g):8660
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):18
Ferrosilite (mol%):16.1-18.2
Wollastonite (mol%):1.1-1.7
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.9
Type spec location:UWB
Main mass:R. Scherer
Finder:R. Scherer
Comments:Submitted by A. Irving
   and collections
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
RScherer: R. Scherer, P.O. Box 92, Timber Lake, SD 57656, United States (private address; updated 6 Mar 2013)
References: Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
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United States
     Recommended::   (45° 25' 30"N, 101° 5' 49"W)

     This is 1 of 19 approved meteorites from South Dakota, United States
     This is 1 of 1895 approved meteorites from United States (plus 890 unapproved names) (plus 28 impact craters)
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