%0 Journal Article
%T Petrography and mineral chemistry of Escal車n meteorite, an H4 chondrite, Mexico
%A Reyes-Salas
%A Adela M.
%A S芍nchez-Rubio
%A Gerardo
%A Altuzar-Coello
%A Patricia
%A Ortega-Guti谷rrez
%A Fernando
%A Flores-Guti谷rrez
%A Daniel
%A Cervantes de la Cruz
%A Karina
%A Reyes
%A Eugenio
%A Linares
%A Carlos
%J Revista mexicana de ciencias geol車gicas
%D 2010
%I Universidad Nacional Aut車noma de M谷xico
%X the escal車n meteorite, a crusted mass weighing 54.3 g, was recovered near zona del silencio in escal車n, state of chihuahua, m谷xico. the stone is an ordinary chondrite belonging to the high iron group h, type 4. electron microprobe analyses of olivine (fa18.1) and pyroxene (fs16.5), phosphate, plagioclase, opaque phases, matrix and chondrule glasses are presented. the metal phases present are kamacite (6.08%ni), taenite (31.66%ni), high nickel taenite (50.01%ni) and traces of native cu. the chondrules average apparent diameter measures 0.62 mm. x-ray diffraction pattern shows olivine, pyroxene and kamacite. alkaline-type glass is found mainly in chondrules. this meteorite is a stage s3, shock-blackened chondrite with weathering grade w0.
%K chondrite
%K h4 type
%K electron microprobe analyses
%K chihuahua
%K m谷xico.
%U http://www.scielo.org.mx/scielo.php?script=sci_abstract&pid=S1026-87742010000100013&lng=en&nrm=iso&tlng=en