| | Book | settings created by human activity, such as roadcuts, mine dumps, and quarries. Good examples are also found...quartz Phosphorite Sedimentary rocks rich in phosphate minerals are known as phosphorites. Several of...to and greater than 1cm. ESSENTIAL COMPONENTS Phosphate minerals (apatite, variscite, vivianite, etc...other sedimentary rocks, as in this example from Zimbabwe. BANDED magnetite and chert layer GRAIN SIZE...Kimberley, South Africa, is an abandoned diamond mine in a large kimberlite pipe. BIG HOLE, megacryst |
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