Open AccessSTUDIES OF BRAZILIAN METEORITES. II. THE AVANHANDAVA CHONDRITE: MINERALOGY, PETROLOGY AND CHEMISTRY
Author(s) -
W H Paar,
GOMES C.B.,
E. Jarosewich
Publication year - 1976
Publication title -
revista brasileira de geociências
Language(s) - English
Resource type - Journals
eISSN - 2177-4382
pISSN - 0375-7536
DOI - 10.25249/0375-7536.1976201210
Subject(s) - troilite , chondrite , meteorite , geology , kamacite , chromite , geochemistry , olivine , ilmenite , achondrite , pentlandite , whitlockite , allende meteorite , mineralogy , astrobiology , pyrrhotite , apatite , pyrite , physics
A description of the Avanhandava, State of Sao Paulo, Brazil, meteorite, which fell in 1952, is given using optical, microprobe, and bulk chemical data. This H-group or olivine-bronzite chondrite contains olivine (Fa 17.3 ), bronzite (Fs 16.5 ) diopside (Wo 45.3 En 49.0 Fs 5.7 ), oligoclase (Or 5.4 Ab 84.1 An 10.4 ) whitlockite, chlorapatite, kamacite, taenite (plessite), troilite, chromite, native copper, pentlandite, ilmenite, bravoite, mackinawite, and chalcopyrrhotite. On the basis of mineral and bulk compositions as well as its texture, the Avanhandava meteorite is classified as an H4 chondrite.
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