[meteorite-list] Yanshan meteorite crater

[Paul H]

I couldn't find any information about a "Yanshan 
meteorite crater". Apparently, it is the "Yanshan 
meteorite" as possibly discussed by Alexander Seidel
at:

http://six.pairlist.net/pipermail/meteorite-list/2004-July/142637.html


What I found on the web was:

1. Xifengite at:
http://webmineral.com/data/Xifengite.shtml
http://www.mindat.org/locentry-5890.html

"Innermost in spheres, surrounded by nickel-iron 
minerals and their oxidation products, apparently 
of extraterrestrial origin, found in placers."

and 2. Gupeiite at:
http://webmineral.com/data/Gupeiite.shtml
http://www.mindat.org/locentry-5890.html

"Innermost in spheres, surrounded by nickel-iron 
minerals and their oxidation products, apparently 
of extraterrestrial origin, found in placers."

Some references for both minerals that I found are:

Dunn, P. J., Chao, G. Y., Fitzpatrick, J. J., 
Langley, R. H., Fleischer, M., and  Zilczer, 
J. A., 1986, New mineral names. American
Mineralogist. vol. 71, no. 1-2, pp. 227-232. 
(February 1986)

Generalov, Mikhail and Naumov, Vladimir, 1996, 
Iron-chromium carbides and iron silicides from 
gold-platinum-bearing placer of the Urals (Russia). 
Congres Geologique International, Resumes 
(30th) [International Geological Congress, 
Abstracts] vol. 30, no.2, pp. 447

Zuxian, Y., 1984, Two new minerals gupeiite and 
xifengite in cosmic dusts from Yanshan. Yen 
Kuang Tse Shih. [Acta Petrologica Mineralogica 
et Analytica] vol. 3, no. 3, pp. 231-238 
(September 1984)

Zuxian, Y., 1986,  Some new minerals from platinum-
bearing rocks in Yanshan and Tibet regions, China. 
Dizhi Yanjiuso Sokan [Bulletin of the Institute 
of Geology, Chinese Academy of Geological Sciences]
vol. 2, no. 15, pp. 49-57.

It appears that these minerals were first found in
"cosmic dust" (Dunn et al. 1986 and Zuxian 1984) and
later found in platinum-bearing rocks and placers
(Zuxian 1986 and Generalov and Vladimir 1996).

Yours,

Paul
Baton Rouge, LA



	
		
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