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| Keystone Lake | |||||||||||||||||||||||||||||||||||||
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| Basic information | Name: Keystone Lake This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2003 Country: United States Mass:  787 g | ||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 8831 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 24 Apr 2013 | ||||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 102:
Keystone Lake 36°17’2.48"N, 96°26’13.22"W Pawnee County, Oklahoma, USA Found: 22 Dec 2003 Classification: Ordinary chondrite (L5) History: A 787 g stone was found by Chris Cooper while searching for artifacts along the shore of Keystone Lake, 2.5 miles SE of Cleveland, Oklahoma. Physical characteristics: Light- to dark-brown with a few patches of weathered crust. Petrography: Unbrecciated texture with chondrules set in a dark weathered matrix. Shock level is S2 and weathering grade is W4. Geochemistry: Olivine is Fa25.3 (FeO/MnO = 52); low Ca pyroxene is Fs21.4Wo1.4; rare metal, Ni = 5.2 wt %. Classification: Ordinary chondrite (L5). Specimens: 22 g at PSF. Chris Cooper holds the main mass. | ||||||||||||||||||||||||||||||||||||
| Data from: MB102 Table 0 Line 0: |
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| Institutions and collections |
NAU: Geology, Bldg 12
Knoles Dr
Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012) PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011) |
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| Catalogs: |
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| References: | Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
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Geography:
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Statistics: This is 1 of 42 approved meteorites from Oklahoma, United States (plus 2 unapproved names) (plus 1 impact crater) This is 1 of 1919 approved meteorites from United States (plus 867 unapproved names) (plus 28 impact craters) | ||||||||||||||||||||||||||||||||||||
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