Kimata, Mitsuyoshi, Nishida, Norimasa, Shimizu, Masahiro, Saito, Shizuo, Matsui, Tomoaki, Arakawa, Yoji (1995) Anorthite megacrysts from island arc basalts. Mineralogical Magazine, 59 (394) 1-14 doi:10.1180/minmag.1995.59.394.01
| Reference Type | Journal (article/letter/editorial) | ||
|---|---|---|---|
| Title | Anorthite megacrysts from island arc basalts | ||
| Journal | Mineralogical Magazine | ISSN | 0026-461X |
| Authors | Kimata, Mitsuyoshi | Author | |
| Nishida, Norimasa | Author | ||
| Shimizu, Masahiro | Author | ||
| Saito, Shizuo | Author | ||
| Matsui, Tomoaki | Author | ||
| Arakawa, Yoji | Author | ||
| Year | 1995 (March) | Volume | 59 |
| Issue | 394 | ||
| Publisher | Mineralogical Society | ||
| Download URL | https://rruff.info/doclib/MinMag/Volume_59/59-394-1.pdf+ | ||
| DOI | doi:10.1180/minmag.1995.59.394.01Search in ResearchGate | ||
| Generate Citation Formats | |||
| Mindat Ref. ID | 2607 | Long-form Identifier | mindat:1:5:2607:3 |
| GUID | 0 | ||
| Full Reference | Kimata, Mitsuyoshi, Nishida, Norimasa, Shimizu, Masahiro, Saito, Shizuo, Matsui, Tomoaki, Arakawa, Yoji (1995) Anorthite megacrysts from island arc basalts. Mineralogical Magazine, 59 (394) 1-14 doi:10.1180/minmag.1995.59.394.01 | ||
| Plain Text | Kimata, Mitsuyoshi, Nishida, Norimasa, Shimizu, Masahiro, Saito, Shizuo, Matsui, Tomoaki, Arakawa, Yoji (1995) Anorthite megacrysts from island arc basalts. Mineralogical Magazine, 59 (394) 1-14 doi:10.1180/minmag.1995.59.394.01 | ||
| In | (1995, March) Mineralogical Magazine Vol. 59 (394) Mineralogical Society | ||
| Abstract/Notes | AbstractAnorthite megacrysts are common in basalts from the Japanese Island Arc, and signally rare in other global fields. These anorthites are 1 to 3 cm in size and often contain several corroded Mg-olivine inclusions. The megacrysts generally range from An94Ab4Ot2 to An89Ab6Ot5 (Ot: other minor end-members, including CaFeSi3O8, CaMgSi3O8, AlAl3SiO8, â–¡Si4O8) and show no chemical zoning. They often show parting. Redclouded megacrysts contain microcrystals of native copper with a distribution reminiscent of the shape of a planetary nebula. Hydrocarbons are also present, both in the anorthite megacrysts and in the olivines included within them. Implications of lateral variations in the Fe/Mg ratio of the included olivines, in Sr-content and in Sr-isotope ratio of the anorthite megacrysts with respect to the Japanese island arc, relate to mixing of crustal components and subducted slab-sediments into the basaltic magmas. | ||
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