Bojite
Bojite is a variety of gabbro characterized by the presence of plagioclase feldspar and primary hornblende and absence of clinopyroxene typically associated with gabbroic rocks. It was initially defined by geologist E. Weinschenk in 1898.[1][2] The term "bojite" has been superseded by the usage of "hornblende gabbro" as defined by the 2002 IUGS Subcommission on the Systematics of Igneous Rocks for rocks composed of plagioclase + hornblende and <5% pyroxene.[3][4]
References
[edit]- ^ Weinschenk, E. (1898). "Zur Kenntniss der Graphitlagerstätten. Chemisch-geologische Studien". Abh. Bayer. Akad. Wiss. 19: 541.
- ^ Ellis, S.E. (1948). "On the delimitation of diorite and gabbro and related rocks". Mineralogical Magazine and Journal of the Mineralogical Society. 28 (203): 447–469. Bibcode:1948MinM...28..447E. doi:10.1180/minmag.1948.028.203.06.
- ^ Le Maitre, R.W., ed. (2002), Igneous rocks: a classification and glossary of terms: recommendations of the International Union of Geological Sciences, Subcommission on the Systematics of Igneous Rocks, Cambridge University Press
- ^ British Geological Survey, Research Report Number RR 99-06, see Figure 13 [1]
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