Rocks of change
Metamorphic rocks are formed when other kinds of rocks are changed by great heat and pressure inside the earth. The word "metamorphic" means changed. Think of metamorphic rocks as recycled rocks. When...
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More to the story of Rocks, At one time or another, you have probably held a rock in your hand. Recall the texture. Was it smooth, polished by the force of sand and salt water pounding it onto the...
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Hematite is the most important source of iron ore in the world. The production of iron has been important to nations of the world for over 2500 years. Today the addition of other minerals to iron has...
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Another wonderful thing about some of the unusal characteristics some minerals develope is flourescence under certain lighting. The properties of these minerals give off radiation as visible light...
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