Iron-Rich Sedimentary Rocks Definition
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Questions and Answers

What is the minimum iron composition required for iron-rich sedimentary rocks?

  • 10 wt.%
  • 5 wt.%
  • 20 wt.%
  • 15 wt.% (correct)

    • What distinguishes iron formations from ironstones?

  • Color and texture
  • Age and iron composition (correct)
  • Presence of specific iron minerals
  • Geological location

    • Which type of iron-rich sedimentary rock is mainly Precambrian in age?

  • Siderite rocks
  • Goethite rocks
  • Ironstones
  • Iron formations (correct)

    • What minerals are found in ironstones?

    <p>(Siderite, chamosite, berthierine)</p> Signup and view all the answers

    What distinguishes native or telluric iron from ironstone?

    <p>Occurrence in metallic form</p> Signup and view all the answers

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