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Alatage Mountain 012
Basic information Name: Alatage Mountain 012
     This is an OFFICIAL meteorite name.
Abbreviation: AM 012
Observed fall: No
Year found: 2013
Country: China
Mass:help 2.6 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  L5
Recommended:  L5    [explanation]

This is 1 of 6307 approved meteorites (plus 3 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 23 Nov 2014
Writeuphelp
Writeup from MB 103:

Alatage Mountain 012 (AM 012)        41°41’14.1"N, 92°56’18.5"E

Xinjiang, China

Found: 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: 3 g (only 1 piece) no fusion crust, gray surface

Petrography: The matrix is fine-grained and the feldspars have sizes over 2 μm. Shock-induced metal-sulfide veins and melt pockets are pervasive. Many mineral grains are heavily fractured. Mosaic extinction of olivine are common. Plagioclase occurs as maskelynite. More than 40% of metal and sulfide are oxidized.

Geochemistry: Minerals are uniform. Olivine: Fa22.0±1.1 (n=11); low-Ca pyroxene: Fs19.1±1.6Wo2.6±1.2 (n=13)

Classification: Ordinary chondrite L5; S5; W2.

Specimens: 2.6 g sample and one thin section are deposited in GUT.

Data from:
  MB103
  Table 0
  Line 0:
State/Prov/County:Xinjiang
Origin or pseudonym:Gobi Desert
Date:1 May 2013
Latitude:41°41'14.1"N
Longitude:92°56'18.5"E
Mass (g):2.6
Pieces:1
Class:L5
Shock stage:S5
Weathering grade:W2
Fayalite (mol%):22.0±1.1 (n=11)
Ferrosilite (mol%):19.1±1.6 (n=13)
Wollastonite (mol%):2.6±1.2 (n=13)
Classifier:Z. Xia, B. Miao, H. Chen, GUT
Type spec mass (g):3
Type spec location:GUT
Main mass:Wenjie Shen in Guangzhou, China
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. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
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Geography:

China
Coordinates:
     Recommended::   (41° 41' 14"N, 92° 56' 18"E)

Statistics:
     This is 1 of 140 approved meteorites from Xinjiang, China (plus 3 unapproved names)
     This is 1 of 263 approved meteorites from China (plus 12 unapproved names) (plus 1 impact crater)
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