It means a mineral deposit that has some metal, precious or no. I.E. gold ore, iron ore, copper ore, zinc ore ETC.
Iron Ore fines are Iron Ore that have been crushed to under 10mm. Iron Ore pellets are Iron Ore fines that have been concentrated and bonded together to form small balls, or pellets.
Graphite is the main ore of pencil lead.
Rock material mined for its constituent elements or minerals is called "ore."
Uraninite, AKA pitchblende, is an ore of uranium.
Chromium ore is a source of the metal Chromium.
A molecule or an atom gives away one ore more electrons and its oxidational number rises
Alumina is AlO2, it is an ore of aluminum. (And technically Oxygen, but that's almost certainly not what you meant)
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The term "fem ore" seems to be a typographical error or a misinterpretation, as it doesn't correspond to a known unit of measurement or currency. If you meant "5 femtoseconds" or "5 femtometres," please clarify for a more accurate response. Otherwise, please provide additional context for your question.
Prospector
What is meant by the term 'compaction'
Geologists commonly refer to a mineral deposit as an "ore deposit." This term denotes a concentration of minerals that can be economically extracted for profit.
What is meant by the term 'compaction'