how is limestone obtained from the earth

The oldest rocks and minerals on Earth - AMNH Much of the evidence from the oldest period of the Earth's history, the Hadean era (3.8 to 4.5 billion years ago), . Limestone (Fossiliferous) Tree sample; Marble; BBC Bitesize - GCSE Chemistry (Single Science) - The crust . Learn about the different elements that make up the earth's crust with BBC Bitesize GCSE Chemistry. Homepage. . Most limestone is obtained by quarrying, . where is the element calcium mined? | eNotes Calcium is abundant within the Earth's crust. It can be mined from limestone, marble, dolomite, gypsum, anhydrite, and aragonite. Limestone sedimentary deposits can be extensive.    Read More

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