METEORITE OF BREITSCHEID. PART I (in German)
Journal Article
·
· Geochim. et Cosmochim. Acta
On August 11, 1956. a stone meteorite. the weight of which was suppcsed to be about 1.5 kg. fell at Breitscheid in the Dillkreis (50 51' N, 8 12' E); but. before recognition of its meteoritic character, the stone was broken to pieces so that the total weight of the fragments amounted only to 970 g. The petrographic examination showed in thin sections a multiplicity of most characteristic chondrules; the Breitscheid meteorite is a bronzite--olivine- chondrite. It is remarkable that troilite was found in primary as well as in secondary formation and that ilmenite could be proved to be a meteoritic mineral. The total chemical analysis corresponds very well with the petrographic results. Helium, neon, argon, tritium, potassium, and uranium were measured by special methods developed during the course of work. It was found that the isotopic composition of helium and neon greatly differs from that of the corresponding terrestrial gases. A geological age of 3300 million years results from the argon/ potassium ratio. The content of helium and neon differs widely in various parts of the meteorite; a phenomena which has to be explained in detail. An irradiation age of result from the ratio helium-3 to tritium in one part of the meteorite. (auth)
- Research Organization:
- Max-Planck-Institut fur Chemie, Mainz
- NSA Number:
- NSA-14-024361
- OSTI ID:
- 4155222
- Journal Information:
- Geochim. et Cosmochim. Acta, Journal Name: Geochim. et Cosmochim. Acta Vol. Vol: 17
- Country of Publication:
- Country unknown/Code not available
- Language:
- German
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