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Turtle Lake
Basic information Name: Turtle Lake
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: Yes
Year fell: 1996
Country: United States
Mass:help 89.3 g
Classification
  history:
Meteoritical Bulletin:  MB 93  (2008)  L5
Recommended:  L5    [explanation]

This is 1 of 6526 approved meteorites (plus 4 unapproved names) classified as L5.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 17 Apr 2008
Revised 4 Aug 2008: final writeup
Writeuphelp
Writeup from MB 93:

Turtle Lake                         45°20.75'N, 92°3.1'W

Clayton, Barron County, Wisconsin, USA

Fall: 21 October 1996

Ordinary chondrite (L5)

History: A small stone hit the windshield of a car owned by Mr. Rick Wirth of 971 5th Street, Clayton, Wisconsin, USA on the night of 21 October 1996. The stone made a grapefruit-sized fracture in the windshield of the car, which was parked outside Mr. Wirth’s home. On the morning of October 21, one fragment of the stone was discovered lying in the windshield-wiper well, and a second was lying on the snow-covered ground nearby. These two fragments fit together. Lack of fusion crust on one side of the object indicates that a part of the mass was not recovered.

Physical characteristics: The total mass of the two fragments was 89.3 g. The interior of the stone is light gray and includes dark chondrules and metal.

Petrography: (C. Alexander, UMin, G. Huss, UH) Chondrules and matrix show considerable recrystallization. Clinoenstatite grains are abundant. There are no large plagioclase grains. Olivine grains show undulatory extinction and some planar fractures. There is no evidence of weathering.

Mineral compositions and Geochemistry: Mean olivine composition is Fa24.2±0.3. Mean low-Ca pyroxene is Fs20.0±0.3.

Classification: Ordinary chondrite (L5); S3, W1.

Type specimens: The main mass of 84 g is on deposit in the UMin.

Data from:
  MB93
  Table 3
  Line 18:
State/Prov/County:Clayton, Barron County, WI, USA
Origin or pseudonym:Residential area
Date:21-Oct-96
Latitude:45°20.75'N
Longitude:92°3.1'W
Mass (g):89.3
Pieces:1
Class:L5
Type spec mass (g):84
Institutions
   and collections
UH: Hawai'i Institute of Geophysics and Planetology, School of Ocean and Earth Science and Technology, University of Hawai'i, 2525 Correa Road, Honolulu, HI 96822, United States (institutional address; updated 25 Oct 2011)
UMin: University of Minnesota Department of Geology & Geophysics 310 Pillsbury Drive SE, Minneapolis, MN 55455-0231, United States (institutional address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 93, MAPS 43, 571-632 (2008)
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Geography:

United States
Coordinates:
     Recommended::   (45° 20' 45"N, 92° 3' 6"W)

Statistics:
     This is 1 of 14 approved meteorites from Wisconsin, United States (plus 1 unapproved name) (plus 2 impact craters)
     This is 1 of 1827 approved meteorites from United States (plus 358 unapproved names) (plus 28 impact craters)
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