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  2. Iron-rich sedimentary rocks - Wikipedia

    en.wikipedia.org/wiki/Iron-rich_sedimentary_rocks

    Some examples of minerals in iron-rich rocks containing oxides are limonite, hematite, and magnetite. An example of a mineral in iron-rich rock containing carbonates is siderite and an example of minerals in an iron-rich rock containing silicate is chamosite. [2] They are often interbedded with limestones, shales, and fine-grained sandstones.

  3. Iron ore - Wikipedia

    en.wikipedia.org/wiki/Iron_ore

    Metallic iron is virtually unknown on the Earth's surface except as iron-nickel alloys from meteorites and very rare forms of deep mantle xenoliths.Although iron is the fourth-most abundant element in the Earth's crust, composing about 5%, the vast majority is bound in silicate or, more rarely, carbonate minerals, and smelting pure iron from these minerals would require a prohibitive amount of ...

  4. Mafic - Wikipedia

    en.wikipedia.org/wiki/Mafic

    A mafic mineral or rock is a silicate mineral or igneous rock rich in magnesium and iron. Most mafic minerals are dark in color, and common rock-forming mafic minerals include olivine, pyroxene, amphibole, and biotite. Common mafic rocks include basalt, diabase and gabbro. Mafic rocks often also contain calcium-rich varieties of plagioclase ...

  5. Category:Iron minerals - Wikipedia

    en.wikipedia.org/wiki/Category:Iron_minerals

    Media in category "Iron minerals" The following 2 files are in this category, out of 2 total. Pyrite from Ampliación a Victoria Mine, Navajún, La Rioja, Spain 2.jpg 1,344 × 1,576; 1.12 MB

  6. Lists of countries by mineral production - Wikipedia

    en.wikipedia.org/wiki/Lists_of_countries_by...

    Iron ore [12] Australia China: List of countries by iron ore production: Lithium [13] Australia Chile: List of countries by lithium production: Manganese [14] South Africa China: List of countries by manganese production: Mercury [15] China Mexico: List of countries by mercury production: Nickel [16] Indonesia Philippines: List of countries by ...

  7. Magnetite - Wikipedia

    en.wikipedia.org/wiki/Magnetite

    Magnetite is a mineral and one of the main iron ores, with the chemical formula Fe 2+ Fe 3+ 2 O 4. ... Magnetite-rich sand dunes are found in southern Peru. [44]

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