https://cdn.earthdata.nasa.gov/conduit/upload/5182/KeywordsCommunityGuide_Baseline_v1_SIGNED_FINAL.pdf 24.9 2026-09-30T10:52:06.201Z https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/sciencekeywords/ab12b3d6-2cbf-4a5a-a410-1d23afe906d8 2018-03-07 ZINC Date=2018-03-07 User Id=tstevens Entity=Definition Operation=INSERT System Note=insert Definition New Value=id: null text: A chemical element and the 24th most abundant element in Earth's crust and has five stable isotopes. The most common zinc ore is sphalerite (zinc blende), a zinc sulfide mineral. The largest workable lodes are in Australia, Asia, and the United States. Zinc is refined by froth flotation of the ore, roasting, and final extraction using electricity (electrowinning). language code: en Date=2018-03-07 User Id=tstevens Entity=BroaderRelation Operation=INSERT User Note=Insert Concept System Note=add broader relation New Value=ZINC [ab12b3d6-2cbf-4a5a-a410-1d23afe906d8,310671] - CONTAMINANTS [42c6d91b-afef-4638-95c5-0d130828b2e7,84623] A chemical element and the 24th most abundant element in Earth's crust and has five stable isotopes. The most common zinc ore is sphalerite (zinc blende), a zinc sulfide mineral. The largest workable lodes are in Australia, Asia, and the United States. Zinc is refined by froth flotation of the ore, roasting, and final extraction using electricity (electrowinning). 2018-03-07 09:40:32.0