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... > Science Keywords > EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > CONTAMINANTS > METALS/MINERALS

Preferred term

METALS/MINERALS  

Definition

  • Minerals are solid, naturally occurring inorganic substances that can be found in the earth’s crust. They are formed without the intervention of humans and have a definite chemical composition and crystal structure. Metals are elementary substances, such as gold, silver and copper that are crystalline when solid and naturally occurring in minerals. They often have the characteristics of being good conductors of electricity and heat, of being shiny in appearance and of being malleable. (en)

Broader concept

Change note

  • 2018-03-06 13:01:45.0 [tstevens] Insert Concept add broader relation (METALS/MINERALS [961591ce-9207-47db-9aeb-11586371fa12,310629] - WATER QUALITY/WATER CHEMISTRY [8c02f5d1-ce86-4bf5-84d5-b3496cdba6ad,83565]);
  • 2018-03-07 07:48:52.0 [tstevens] Insert Concept add narrower relation (METALS/MINERALS [961591ce-9207-47db-9aeb-11586371fa12,310629] - ARSENIC [fa892a9e-523b-424e-bf02-1a8d1e618985,310649]);
  • 2018-03-07 07:49:13.0 [tstevens] Insert Concept add narrower relation (METALS/MINERALS [961591ce-9207-47db-9aeb-11586371fa12,310629] - BARIUM [3e666b9f-6cf5-4454-9a65-987e981cd80e,310651]);
  • 2018-03-07 07:51:59.0 [tstevens] Move Concepts delete narrower relation (null);
  • 2018-03-07 07:52:12.0 [tstevens] Move Concepts delete narrower relation (null);
  • 2018-03-07 07:52:30.0 [tstevens] Move Concepts delete broader relation (null); add broader relation (METALS/MINERALS [961591ce-9207-47db-9aeb-11586371fa12,310629] - CONTAMINANTS [42c6d91b-afef-4638-95c5-0d130828b2e7,84623]);
  • 2018-03-07 09:54:08.0 [tstevens] insert Definition (id: null text: Minerals are solid, naturally occurring inorganic substances that can be found in the earth’s crust. They are formed without the intervention of humans and have a definite chemical composition and crystal structure. Metals are elementary substances, such as gold, silver and copper that are crystalline when solid and naturally occurring in minerals. They often have the characteristics of being good conductors of electricity and heat, of being shiny in appearance and of being malleable language code: en);
  • 2018-03-07 09:54:40.0 [tstevens] update Definition (Minerals are solid, naturally occurring inorganic substances that can be found in the earth’s crust. They are formed without the intervention of humans and have a definite chemical composition and crystal structure. Metals are elementary substances, such as gold, silver and copper that are crystalline when solid and naturally occurring in minerals. They often have the characteristics of being good conductors of electricity and heat, of being shiny in appearance and of being malleable.);

URI

https://gcmd.earthdata.nasa.gov/kms/concept/961591ce-9207-47db-9aeb-11586371fa12

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