An estimate of the diffusion loss of tritium from iron meteorites in space cannot be based, in a direct manner, on the results of diffusion measurements in the laboratory, because the hydrogen content of the samples in the laboratory is always higher by many orders of magnitude than is the tritium content of iron meteorites in space, which results f rom bombardement by cosmic rays. This is true...

Numerous papers on the solar photospheric abundance of iron have recently been published leading to a longstanding debate concerning rather different results obtained from the analyses of Fe i lines and, to a lesser extent, of Fe ii lines. Based on a set of 65 solar Fe i lines, with accurate transition probabilities as well as new accurate damping constants, we construct a new empirical photosp...

The Iron Age was the time when people acquired iron processing technology and is generally thought to have begun after 1200 B.C. Some prehistoric artifacts made of meteorites are dated from Bronze Age. A nicely preserved meteoritic dagger found in tomb King Tutankhamen (1361–1352 B.C.) ancient Egypt. Yet, its manufacturing method origin remain unclear. Here, we report nondestructive two-dimensi...

available online at http://meteoritics.org 1493 © The Meteoritical Society, 2005. Printed in USA. Bosumtwi impact structure, Ghana: Geochemistry of impactites and target rocks, and search for a meteoritic component Xiongxin DAI1, 4, Daniel BOAMAH1, Christian KOEBERL1*, Wolf Uwe REIMOLD2, Gordon IRVINE3, and Iain MCDONALD3 1Department of Geological Sciences, University of Vienna, Althanstrasse 1...