Rocks Minerals Crystals?


Rocks, minerals, and crystals are fun to study if you are interested in geology. The entire earth is made up of rocks and minerals. Rocks are made of 2 different types of minerals. There are around 3000 different types of minerals, sorted into 8 groups. Crystals are minerals that have grown into different shapes. Crystals form when the liquid minerals inside the earth cool, and harden. Most crystals take thousands of years to grow; but some, like salt, grow so quickly that you can see them growing.
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obsidian (natural glass)
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Porphyritic texture develops when some of the
It's very hard to tell much about a rock from a picture. I think the dark material is the original rock, and was black but has weathered reddish, which suggests it's iron-rich, possibly
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rocks are actually made up of at least two or more minerals. A rock is a solid mixture of minerals. Rocks are a combination of different minerals. You can find ...
Rocks are composed one or more mineral, therefor a rock is solid. Minerals on the other hand are naturally occurring solids, with a definite chemical formula and ...
Minerals are natural substances made up of a single element or a compound of elements. Rocks, on the other hand, are formed from one or more minerals. There are ...
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