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| Carson Lake | |||||||||||||||||||||||||||||||||||||||
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| Basic information | Name: Carson Lake This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 1941 Country: United States Mass:  18.37 kg | ||||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 6826 approved meteorites (plus 6 unapproved names) classified as H6. [show all] Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||||||||||
| Comments: | Approved 5 Apr 2020 | ||||||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 109:
Carson Lake 38º36.432’N, 103º0.087’W Colorado, United States Find: 1941 Classification: Ordinary chondrite (H6) History: Frank Jacobs discovered the 18.37 kg sample in 1941 in a farm field 7.2 miles N of Galatea, Kiowa Co., Colorado (CO Sect. 4 T17SR50W). In 2019, Jake Jacobs and his wife brought the sample to the Colorado School of Mines Museum of Earth Science for identification. Daniel Wray, a museum volunteer, recognized the sample as a meteorite. Physical characteristics: The sample has an irregular, tabular shape with abundant broad shallow regmaglypts. The exterior of the sample is covered in an orange-colored weathered fusion crust. The interior is dark-brown in color and shows sulfides and a few shiny grains of un-weathered FeNi metal. Petrography: Description and Classification (A. Love, App) Sample shows recrystallized chondritic texture composed of indistinct chondrules with an average apparent diameter of 623 µm (n=29). Secondary plagioclase has an average grainsize of 60 µm (n=38). Chondrule mesostasis has been completely recrystallized. A region of the sample, bounded by opaque shock veins, is composed of 25-200 µm brecciated grains of olivine, pyroxene and plagioclase. Additional minerals are: troilite, phosphates and chromite. Geochemistry: (A. Love, App) Olivine (Fa17.9±0.2, Fe/Mn=35.7±0.8 n=12); low Ca pyroxene (Fs15.7±0.1Wo1.3±-0.1, n=12). Classification: Ordinary Chondrite (H6, C-S3, W3). Based on mineral textures, compositions and grainsize of secondary plagioclase, this sample is an H6. Specimens: Jake Jacobs holds the main mass. A 38.90 g fragment and a polished thin section are on deposit at App. | ||||||||||||||||||||||||||||||||||||||
| Data from: MB109 Table 0 Line 0: |
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| Institutions and collections |
App: Department of Geology, 572 Rivers St., Appalachian State University, Boone, NC 28608, United States (institutional address; updated 7 Mar 2013) |
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| Catalogs: |
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| References: | Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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Geography:
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Statistics: This is 1 of 90 approved meteorites from Colorado, United States (plus 5 unapproved names) This is 1 of 1927 approved meteorites from United States (plus 866 unapproved names) (plus 28 impact craters) | ||||||||||||||||||||||||||||||||||||||
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| Also see: |
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| Revision history: |
This lists important revisions made to data for this record.
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