A preliminary study on mineralogical and chemical compositions of some chondrites falling in China
Abstract
Twenty-two chondrites have been examined to determine their chemical and mineral compositions, cosmogenic nuclides, formation and exposure ages, impact effects, and textures. On the basis of chemical and petrologic features, four distinct groups of chondrites have been identified. Each of these groups has its own evolutionary history, and chondrites of different chemical groups may have originated from parent bodies of different compositions or derived from a common parent body through the differentiation caused by thermal metamorphism. Five stages of the formation of chondrites are postulated.
- Publication:
-
Geochemistry
- Pub Date:
- June 1982
- Bibcode:
- 1982Geoch...1..186W
- Keywords:
-
- Chondrites;
- Meteoritic Composition;
- Chemical Composition;
- Mineralogy;
- Neutron Activation Analysis;
- Olivine;
- Petrology;
- Pyroxenes;
- Tables (Data)