epidotizedadj.
/ˈɛpɪdəʊtʌɪzd/ Altered metamorphically into epidote.
ΚΠ
1930 B. N. Peach & J. Horne Chapters Geol. Scotl. 79 Beds with abundant pebbles of epidote and epidotized felspar.
1941 Proc. Prehistoric Soc. 7 58 The rock is identical with the epidotised tuffs.
1965 G. J. Williams Econ. Geol. N.Z. xii. 181/2 Hutton, McCraw (1950) reported chalcopyrite as scattered grains in epidotized breccia in greywacke and argillite in the Takitimu Mountains, Southland.
Derivatives
ˌepidotiˈzation n.
ΚΠ
1888 J. J. H. Teall Brit. Petrogr. 150 The epidotisation of the felspar is an alteration process.
1890 G. H. Williams Greenstone Schist Michigan 56 The simultaneous action of the two last described processes (chloritization and epidotization) in an aluminous pyroxene or hornblende results in the production of an aggregate consisting of..crystals of epidote, imbedded in a green, scaly mass of chlorite.
1941 Proc. Prehistoric Soc. 7 58 It is only however near the rhyolite that they exhibit..epidotization.
1965 G. J. Williams Econ. Geol. N.Z. x. 158/2 All rocks are hydrothermally altered, resulting in uralitization and ch[l]oritization of pyroxene, saussuritization of felspar, and epidotization of the rock as a whole.
This entry has not yet been fully updated (first published 1933; most recently modified version published online March 2018).
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adj.1888