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Kumtag 004
Basic information Name: Kumtag 004
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2012
Country: China
Mass:help 2 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  L5
Recommended:  L5    [explanation]

This is 1 of 7119 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 20 Nov 2013
Writeuphelp
Writeup from MB 102:

Kumtag 004        41°30’N, 93°33’E

Xinjiang, China

Found: 17 May 2012

Classification: Ordinary chondrite (L5)

History: On 17 May 2012, a meteorite was found in the Kumtag Desert when geologist Le Kesi was working for the geological survey.

Physical characteristics: A 2 g cuboid shaped (1.6 × 1.5 × 0.2 cm) rock lacking fusion crust.

Petrography: (B. Miao, C. Zhang, GUT): Chondrule outlines indistinct under the optical microscope, but well defined in BSE image. Recognizable chondrule types include: porphyritic olivine, porphyritic pyroxene, porphyritic olivine-pyroxene, granular olivine, barred olivine, radial pyroxene, cryptocrystalline. The matrix largely recrystallized, but few fine-grained grains are visible. About 80% of metal and troilite grains are weathered. Olivine exhibits undulose extinction, planar fractures, weak mosaic extinction.

Geochemistry: Olivine: Fa23.4±0.5, n=17, Low-Ca pyroxene: Fs19.8±0.5Wo1.2±0.4, n=24.

Classification: Ordinary chondrite (L4); S4; W3.

Specimens: Two thin sections are deposited in GUT.

Data from:
  MB102
  Table 0
  Line 0:
State/Prov/County:Xinjiang
Origin or pseudonym:Desert
Date:17 May 2012
Latitude:41°30'N
Longitude:93°33'E
Mass (g):2
Pieces:1
Class:L5
Shock stage:S4
Weathering grade:W3
Fayalite (mol%):23.4±0.5 (n=17)
Ferrosilite (mol%):19.8±0.5 (n=24)
Wollastonite (mol%):1.2±0.4 (n=24)
Classifier:B. Miao, C. Zhang, GUT
Type spec mass (g):2
Type spec location:GUT
Main mass:Lei Kesi, Peng Wang, and two geologists in Kumtag, Xinjiang
Finder:Lei Kesi
Comments:Submitted by Bingkui Miao
Institutions
   and collections
GUT: College of Earth Sciences, Guilin University of Technology, 12 Jiangan Road, Guilin 541004, China (institutional address; updated 18 Oct 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
Find references in NASA ADS:
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Geography:

China
Coordinates:
     Recommended::   (41° 30'N, 93° 33'E)

Statistics:
     This is 1 of 261 approved meteorites from Xinjiang, China (plus 5 unapproved names)
     This is 1 of 413 approved meteorites from China (plus 15 unapproved names) (plus 1 impact crater)
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