epidote
noun
ep·i·dote ˈe-pə-ˌdōt 
: a yellowish-green mineral Ca2(Al,Fe)3Si3O12OH usually occurring in grains or columnar masses and sometimes used as a gemstone
Example Sentences
Recent Examples on the Web Specifically, the multi-heavy mineral prospect consists of abrasives garne and epidote, and zircon, magnetite and gold. 
Elwood Brehmer, Anchorage Daily News, 7 Nov. 2019 That’s the iron silicate minerals epidote and chlorite. Peter Hessler, National Geographic, 25 July 2016
Elwood Brehmer, Anchorage Daily News, 7 Nov. 2019 That’s the iron silicate minerals epidote and chlorite. Peter Hessler, National Geographic, 25 July 2016 Word History
Etymology
French épidote, from Greek epididonai to give in addition, from epi- + didonai to give — more at date
First Known Use
1808, in the meaning defined above
- giant hill
- giant hogweed
- giant hogweeds
- giant holly fern
- giant hornet
- giant hornets
- giant hyssop
- giant kangaroo
- giant kelp
- giant lily
- giant lymph node hyperplasia
- giant moss
- giant nettle
- giant newt
- giant panda
- giant pangolin
- giant parsley
- giant parsnip
- giant perch
- giant petrel
- giant pig
- giant powder
- giant puffball
- giant pyramidal cell
- giant ragweed