Tag

Rocks

how will you describe quartz
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How Will You Describe Quartz?

Quartz, the commonest of all minerals, is made of silica. It is found in most kinds of rocks in colorless, often transparent form. There…

where do earthquakes occur
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Where Do Earthquakes Occur?

Earthquakes can strike any location at any time, but history shows they occur in the same general patterns year after year. The world’s greatest…