Chemical composition, petrography and mineralogy of the Shibayama chondrite found in Shibayama-Machi, Sanbu-Gun, Chiba-Ken, Japan

Details Chemical composition, petrography and mineralogy of the Shibayama chondrite found in Shibayama-Machi, Sanbu-Gun, Chiba-Ken, Japan Chemical composition, petrography and mineralogy of the Shibayama chondrite found in Shibayama-Machi, Sanbu-Gun, Chiba-Ken, Japan

Sep 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979metic..14..317s&link_type=abstract

Meteoritics, vol. 14, Sept. 30, 1979, p. 317-330.

Mathematics

Logic

Chemical Composition, Chondrites, Meteoritic Composition, Mineralogy, Petrography, Iron, Japan, Magnesium Oxides, Minerals, Olivine, Pyroxenes, Recrystallization, Silicon Dioxide, Textures, Meteorites, Shibayama Chondrite, Chemical Composition, Petrography, Mineralogy, Weathering, Texture, Crystallization, Matrix, Silicates, L-Group Chondrites, Shock, Data, Olivine, Pyroxene, Plagioclase, Oxidation, Polarizing Microscope, Opaque Minerals, Chondrules, Grains

Scientific paper

In April 1969, the chondrite was accidentally found in the side wall of the vegetable storage excavated at Shibayama-machi, Sanbu-gun, Chiba-ken, Japan, by Mr. A. Ishii and his grandson, Mr. S. Ito.
The chondrite named Shibayama has been weathered thoroughly for a long period of burial underground.
The bulk chemical composition, especially total Fe (21.41%) and ratios of Fetotal(SiO2 (0.557), SiO2/MgO) (1.59) and molar composition of olivine (Fa23) and pyroxene (Fs22) as well as mineral composition, indicate that Shibayama is a typical olivine-hypersthene chondrite. If the oxidized Fe is assumed only from metallic Fe, the original metallic Fe (7.75%) and Femetal/Fetotal (0.361) also support the above conclusion.
From the well-recrystallized texture, indistinct and obliterated chondrule-matrix boundary, homogeneous composition of Olivine and pyroxene, absence of igneous glass, and interstitial and well-developed plagioclase, this chondrite could be classified in petrologic type 6.
Mosaic texture, kink bands, undulatory extinction of silicate grains and maskelynitization of plagioclase indicate that Shibayama suffered from a heavy shock effect, as is seen in other L-6 group chondrites.

Affiliated with

Also associated with

No associations

Rating

Chemical composition, petrography and mineralogy of the Shibayama chondrite found in Shibayama-Machi, Sanbu-Gun, Chiba-Ken, Japan does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Chemical composition, petrography and mineralogy of the Shibayama chondrite found in Shibayama-Machi, Sanbu-Gun, Chiba-Ken, Japan, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chemical composition, petrography and mineralogy of the Shibayama chondrite found in Shibayama-Machi, Sanbu-Gun, Chiba-Ken, Japan will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1819766