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A lustrous yellow, green, or black mineral, Ca2(Al, Fe)3(SiO4)3OH, commonly found in metamorphic rock.

[French épidote, from Greek epididonai, to give in addition, increase (from the greater length of its crystals compared with those of related minerals) : epi-, epi- + didonai, to give; see dō- in Indo-European roots.]

ep′i·dot′ic (-dŏt′ĭk) adj.
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In the southeast part of the property, English Township prospecting has uncovered epidotic volcanic rock with heavy sulphides.