Distribution of Opaque Minerals in Primitive Achondrites

Details Distribution of Opaque Minerals in Primitive Achondrites Distribution of Opaque Minerals in Primitive Achondrites

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27.1483y&link_type=abstract

Lunar and Planetary Science, volume 27, page 1483

Computer Science

Achondrites: Primitive, Metal, Mineral Distribution, Texture, Winonaite

Scientific paper

We studied distribution of opaque phases (FeNi metal and troilite) in three "winonaites", Yamato (Y) 74025, Y75305 and Y8005 and compared them with a lodranite-like acapulcoite Elephant Moraine (EET) 84302. The thin sections of Y74025, Y75305 and Y8005 include very large opaque grains. The difference between the distribution patterns of opaque minerals in these four meteorites may reflect the different degrees of aggregation of opaque minerals. The heterogeneous distribution of materials in each thin section and between thin sections of each meteorite indicates that the heterogeneity exists in rather small scale in the parent bodies of primitive achondrites. It supports the idea that the local heterogeneity of materials in the parent body can explain the depletion of low-temperature melting materials from lodranites. _

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