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Basic information Name: Tongan
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 1996
Country: China
Mass:help 500 kg
Meteoritical Bulletin:  MB 102  (2013)  Iron, IAB-MG
Recommended:  Iron, IAB-MG    [explanation]

This is 1 of 119 approved meteorites classified as Iron, IAB-MG.   [show all]
Search for other: IAB complex irons, Iron meteorites, and Metal-rich meteorites
Comments: Approved 12 Sep 2013
Writeup from MB 102:

Tongan        24°32’21"N, 110°59’6"E

Guangxi, China

Found: 1996

Classification: Iron meteorite (IAB-MG)

History: A large iron meteorite was found by a farmer in his field in Miaobei village, Zhongshan County, in 1996, and then purchased by Mr. Yongxing Liang, a retired official in Zhongshan county, Guangxi Province, in 2001. The find site is near the boundary with Zhongshan county.

Physical characteristics: This meteorite was not weighed accurately and is estimated to be about 500 kg. It is dark brown in color due to a thin layer of limonite and has an angular shape without any fusion crust. Surface covered with abundant centimeter-sized cavities.

Petrography: (B. Miao, H. Chen, Z. Xia, L. Xie, GUT; Y. Lin, IGGCAS): The meteorite is dominated by kamacite with a bandwidth of 10.5 mm on average. Taenite occurs as thin lamellae 30-100 μm wide. Kamacite (5.59-7.59 wt% Ni; 0.96-1.29 wt% Co) and taenite (17.9-34.0 wt% Ni; 0.33-0.88 wt% Co).

Geochemistry: (K.V. Ponganis, UCSD; B. Spettel, MPI) Bulk composition (by INAA): Fe 91.9%, Ni 6.60%, Co 4330 mg/g, Ga 88.6 μg/g, Ge 301 μg/g, As 11.9 μg/g, Mo 8.20 μg/g, Ir 2.34 μg/g.

Classification: Iron (IAB-MG)

Specimens: 150 g of the sample is on deposit at GUT and 200 g at IGGCAS.

Data from:
  Table 0
  Line 0:
Origin or pseudonym:Mountains
Mass (g):~500 kg
Class:Iron, IAB-MG
Classifier:B. Miao, H. Chen, Z. Xia, L. Xie, GUT; Y. Lin, IGGCAS
Type spec mass (g):350
Type spec location:GUT (150 g); IGGCAS (200 g)
Main mass:Yongxing Liang
Finder:A farmer in Zhongshan County, Guangxi Province
Comments:Submitted by Bingkui Miao
   and collections
GUT: College of Earth Sciences, Guilin University of Technology, 12 Jiangan Road, Guilin 541004, China (institutional address; updated 18 Oct 2012)
IGGCAS: Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China (institutional address; updated 16 Oct 2011)
MPI: Max-Planck-Institut für Chemie, Abteilung Kosmochemie, Postfach 3060, D-55020 Mainz, Germany; Website (institutional address; updated 7 Nov 2015)
UCSD: Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093, United States (institutional address; updated 4 Jan 2013)
References: Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
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     Recommended::   (24° 32' 21"N, 110° 59' 6"E)

     This is 1 of 7 approved meteorites from Guangxi, China
     This is 1 of 457 approved meteorites from China (plus 10 unapproved names) (plus 1 impact crater)
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