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Alatage Mountain 004
Basic information Name: Alatage Mountain 004
     This is an OFFICIAL meteorite name.
Abbreviation: AM 004
Observed fall: No
Year found: 2013
Country: China
Mass:help 12.2 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  L5
Recommended:  L5    [explanation]

This is 1 of 7176 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 23 Nov 2014
Writeuphelp
Writeup from MB 103:

Alatage Mountain 004 (AM 004)        41°41’3.9"N, 92°57’37.3"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: 12.2 g (only 1 piece) no fusion curst, gray surface

Petrography: Chondrules are readily defineated. The main silicates are olivine and pyroxene, with less abundant fine-grained plagioclase and minor apatite. Shock-induced metal-sulfide veins and melt pockets are pervasive. Many mineral grains are heavily fractured. More than 40% of metal and sulfide are oxidized.

Geochemistry: Minerals are uniform. Olivine: Fa23.0±0.5 (n=6); low-Ca pyroxene: Fs19.3±0.5Wo1.8±0.2 (n=6)

Classification: Ordinary chondrite L5; S5; W2.

Specimens: 3 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°41'3.9"N
Longitude:92°57'37.3"E
Mass (g):12.2
Pieces:1
Class:L5
Shock stage:S5
Weathering grade:W2
Fayalite (mol%):23.0±0.5 (n=6)
Ferrosilite (mol%):19.3±0.5 (n=6)
Wollastonite (mol%):1.8±0.2 (n=6)
Classifier:Z. Xia, B. Miao, H. Chen, GUT
Type spec mass (g):3
Type spec location:GUT
Main mass:Deqiu Dai in Changsha, Hunan, 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' 4"N, 92° 57' 37"E)

Statistics:
     This is 1 of 273 approved meteorites from Xinjiang, China (plus 4 unapproved names)
     This is 1 of 428 approved meteorites from China (plus 11 unapproved names) (plus 1 impact crater)
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