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Alatage Mountain 042
Basic information Name: Alatage Mountain 042
     This is an OFFICIAL meteorite name.
Abbreviation: AM 042
Observed fall: No
Year found: 2013
Country: China
Mass:help 404 g
Classification
  history:
Meteoritical Bulletin:  MB 105  (2016)  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 2 Apr 2016
Writeuphelp
Writeup from MB 105:

Alatage Mountain 042 (AM 042)        41°41’19.8"N, 92°57’10.4"E

Xinjiang, China

Find: 1 May 2013

Classification: Ordinary chondrite (L5)

History: An expedition found 42 meteorites between 30 April and 1 May 2013 in a 2.7 × 1.4 km area 80 km east of Alatage Mountain. The expedition included Bingkui Miao, Yangting Lin, Shijie Li, Deqiu Dai, Wenjie Shen, Sen Hu, Lei Kesi, Peng Wang, and Zhipeng Xia.

Physical characteristics: Total mass: 403.8 g (only 1 piece) no fusion crust, gray surface

Petrography: The meteorite shows a homogeneous lithology. The sizes of minerals are mostly <100 μm. Mosaic extinction of olivine is common. More than 50% of metal and sulfide is oxidized.

Geochemistry: Minerals are uniform. Olivine: Fa22.2±0.7 (n=9); low-Ca pyroxene: Fs19.1±2.2Wo4.7±1.9 (n=9)

Classification: Ordinary chondrite (L5); S5; W2.

Specimens: 100 g sample and one thin section are deposited in GUT.

Data from:
  MB105
  Table 0
  Line 0:
State/Prov/County:Xinjiang
Origin or pseudonym:Gobi Desert
Date:1 May 2013
Latitude:41°41'19.8"N
Longitude:92°57'10.4"E
Mass (g):403.8
Pieces:1
Class:L5
Shock stage:S5
Weathering grade:W2
Fayalite (mol%):22.2±0.7 (n=9)
Ferrosilite (mol%):19.1±2.2 (n=9)
Wollastonite (mol%):2.7±1.9 (n=9)
Classifier:Z. Xia, B. Miao, H. Chen, GUT
Type spec mass (g):100
Type spec location:GUT
Main mass:Bingkui Miao in GUT
Finder:Bingkui Miao et al.
Comments:Submitted by Zhipeng Xia
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. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
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Geography:

China
Coordinates:
     Recommended::   (41° 41' 20"N, 92° 57' 10"E)

Statistics:
     This is 1 of 228 approved meteorites from Xinjiang, China (plus 4 unapproved names)
     This is 1 of 364 approved meteorites from China (plus 15 unapproved names) (plus 1 impact crater)
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