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Taylor Glacier 82700
Basic information Name: Taylor Glacier 82700
     This is an OFFICIAL meteorite name.
Abbreviation: TYR 82700
Observed fall: No
Year found: 1982
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 892 g
Antarctic Meteorite Newsletter:  AMN 7(1)  (1984)  L4
Meteoritical Bulletin:  MB 76  (1994)  L4
NHM Catalogue:  5th Edition  (2000)  L4
MetBase:  v. 7.1  (2006)  L4
Recommended:  L4    [explanation]

This is 1 of 2008 approved meteorites (plus 4 unapproved names) classified as L4.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Writeup from AMN 7(1):

Sample No.: TYR82700

Location: Taylor Glacier

Field No.: 2926

Weight (gms): 892.1

Meteorite Type: L4 chondrite


Physical Description: Carol Schwarz

Black to brown fusion crust covers 60% of this specimen. The other surfaces are brown with light inclusions. White evaporite deposit dots the exterior. The interior contains much oxidation. Dimensions: 10 x 8.5 x 7 cm


Petrographic Description: Brian Mason

The section shows a close-packed aggregate of chondrules and chondrule fragments, set in a minor amount of granular matrix. A variety of chondrule types is present: granular and porphyritic olivine and olivine-pyroxene, barred olivine, and radiating fibrous pyroxene. Much of the pyroxene is polysynthetically twinned clinobronzite. Minor amounts of nickel-iron and troilite are present, interstitial to the chondrules. Minor weathering is indicated by brown limonitic staining around metal grains. Microprobe analyses give the following compositions: olivine, Fa24; pyroxene somewhat variable, Fs15-23, mean Fs18. The meteorite is an L4 chondrite.

Writeup from MB 106:
Note on the find location of TYR 82700 (J. Schutt, priv. comm. to J. Grossman, April, 2017).

The location recorded here for TYR 82700 is that of Taylor Glacier itself. The meteorite was recovered by Vagn Buchwald during a helicopter trip to the Taylor Glacier region, independent of the rest of the ANSMET team.  The location of the find was not recorded. There is a slight chance that TYR 82700 was found in the same area as TYR 05180 and TYR 05181, in a bare ice area mostly clear of terrestrial rock. 
Data from:
  Table 2
  Line 5505:
Mass (g):892.1
Weathering grade:Be
Fayalite (mol%):24
Ferrosilite (mol%):15-23
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References: Published in Antarctic Meteorite Newsletter 7(1) (1984), JSC, Houston
Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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     Catalogue of Meteorites:   (77° 44'S, 162° 10'E)
     Recommended::   (77° 44'S, 162° 10'E)

     This is 1 of 43840 approved meteorites from Antarctica (plus 3802 unapproved names)
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