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Tuesday, May 14, 2013

Magnetite and Geodes

Magnetite is a kind of rock that is magnetic. It is made up of oxygen and iron oxides. I like magnetite because it is magnetic. I got magnetite in a rock collection in topsfield. It was fun there. I also bot Sulphur, Arginote, a Geode, and some Quartz. I want to find magnetite some day. it would be fun to play with it.

I like Geodes too.Sedimentary geodes are formed under the water and Volcanic geodes are formed by  the lava  when it gets cold. Sedimentary and Volcanic geodes both have to have the same amount of  pressure and chemicals to make crystals inside. I found a piece of geode in my backyard. I still have it now.

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