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Kumtag 039
Basic information Name: Kumtag 039
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2013
Country: China
Mass:help 188.2 g
Meteoritical Bulletin:  MB 108  (2020)  L6-melt breccia
Recommended:  L6-melt breccia    [explanation]

This is 1 of 70 approved meteorites classified as L6-melt breccia.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 6 Oct 2019
Writeup from MB 108:

Kumtag 039        41°33’28.06"N, 93°13’16.18"E

Xinjiang, China

Find: 16 Sept 2013

Classification: Ordinary chondrite (L6, melt breccia)

History: (Ziyao Wang) Discovered by the geologist Wang Jianming (Jiuquan/Gansu) during field work in the Kumtag Desert on Sept. 16, 2013.

Physical characteristics: (Ziyao Wang and R. Bartoschewitz, Bart) Gray-brown stone of 188.2 g without fusion crust

Petrography: (R. Bartoschewitz, Bart) Gray homogeneous matrix with vugs up to 2 mm. Microporphyrytic and relict mineral grains and chondrules, consistent with type L6, are set in a μm-sized melt matrix. Metal and sulfide occur as rounded objects up to 1 mm.

Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Olivine Fa23.6±0.7 (n=13); pyroxene Fs20.0±0.5Wo2.1±1.1 (n=5); chromite CRAL86, FFM73 (n=2). Pyrrhotite Ni=2 wt.-% (n=4). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.37

Classification: Ordinary chondrite (L6-melt breccia)

Specimens: 20.6 g on deposit at Kiel, Ziyao Wang holds the main mass, and 17.1 g with Bart. Polished thin sections Bart and IfP

Data from:
  Table 0
  Line 0:
Origin or pseudonym:desert
Date:16 Sept 2013
Mass (g):188.2
Class:L6-melt breccia
Fayalite (mol%):23.6±0.7 (n=13)
Ferrosilite (mol%):20.0±0.6 (n=4)
Wollastonite (mol%):2.1±1.2
Magnetic suscept.:4.37
Classifier:R. Bartoschewitz
Type spec mass (g):20.6
Type spec location:Kiel
Main mass:Ziyao Wang
Finder:Jianming Wang
Comments:working name WZ04; submitted by R. Bartoschewitz
   and collections
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)
Kiel: Geologisches und Mineralogisches Museum, Institut für Geowissenschaften, Christian-Albrechts-Universität Kiel, Ludewig-Mayn-Str. 10, D-24118 Kiel, Germany, Germany (institutional address; updated 13 Sep 2013)
Bart: Bartoschewitz Meteorite Laboratory, Weiland 37, D-38518 Gifhorn, Germany; Website (private address; updated 30 Nov 2019)
References: Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
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     Recommended::   (41° 33' 28"N, 93° 13' 16"E)

     This is 1 of 293 approved meteorites from Xinjiang, China (plus 5 unapproved names)
     This is 1 of 457 approved meteorites from China (plus 10 unapproved names) (plus 1 impact crater)
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