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The Collaborative International Dictionary
Oligistic

Oligist \Ol"i*gist\, Oligistic \Ol`i*gis"tic\, a. [Gr. ?, superl. of 'oli`gos few, little: cf. F. oligiste.] (Min.) Of or pertaining to hematite.

Wiktionary
oligistic

a. (context mineralogy English) Of or relating to oligist, or hematite.