Collecting Rocks
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Scan day: 09 February 2014 UTC
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Description: USGS information on collecting rocks.
Rocks Tell the Story of the Earth The Earth is made of rock, from the tallest mountains to the floor of the deepest ocean. Thousands of different types of rocks and minerals have been found on Earth. Most rocks at the Earth's surface are formed from only eight elements (oxygen, silicon, aluminum, iron, magnesium, calcium, potassium, and sodium), but these elements are combined in a number of ways to make rocks that are very different.
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| Page title: | Collecting Rocks |
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| IP-address: | 137.227.252.43 |
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| WHOIS | Status: ACTIVE |
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