Core production in Equisetum arvense Popular Article
- Author
- Brownsey, P.D.; Moss, T.C.; Sneddon, B.V.
- Year
- 1985
- Journal / Source
- Wellington Botanical Society Bulletin
- Volume
- 42
- Pages
- 16-21
- Summary
- Garnets occur sporadically on most beaches of the east coast of New Zealand's North Island, south of Hawke Bay, and at Kairakau co-exist with barite, zircon, magnetite, ilmenite and hypersthene. Garnets from this locality, analysed by electron microprobe, show three chemical groupings: (a) Low spessartine garnets which were probably initially derived from gneisses and associated igneous and metamorphic rocks. (b) High spessartine-low grossularite garnets, possibly derived from granitic or rhyolitic rocks. (c) High spessartine-high grossularite garnets similar to those commonly found In greenschist facies pelitic schists.
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