Properties of Minerals

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Properties of Minerals

2.1 Properties of MineralsBy Sarah

A mineral is a naturally occurring solid that can be formed by inorganic processes, and that has a crystal structure and a definite chemical composition.

Each mineral has characteristic properties that can be used to identify it (color, luster, streak, hardness, ' density).

In general, minerals can form in 3 ways. Some minerals form from organic processes. Others can crystallize from materials dissolved in solutions. Finally, many minerals crystallize as magma and lava cool.

Some minerals can also form by organic processes.

When elements and compounds that are dissolved in water leave a solution, crystallization occurs.

Vocabulary1. Cleavage: a mineral's ability to split easily along flat surfaces2. Crystal: a solid in which the atoms are arranged in a pattern that repeats over and over again3. Crystallization: the process by which atoms are arranged to form a material that has a crystal structure4. Fracture: the way a mineral looks when it breaks apart in an irregular way5. Geode: a rounded, hollow rock that is often lined with mineral crystals6. Inorganic: formed from materials that were never part of a living thing7. Luster: how light is reflected from a mineral's surface8. Mineral: a aturally occurring solid that can from by inorganic processes, and that has a crystal structure and definite chemical composition9. Mohs hardness scale: used to rank the hardness of minerals, ranked from 1-10, 10 being diamond and able to scratch any mineral10. Solution: a mixture in which one substance is dissolved in another11. Streak: the color of a mineral's powder12. Vein: a narrow channel or slab of a mineral that is different from the surrounding rock

Minerals form as hot magma cools inside the crust, or as lava hardens on the surface. When these liquids cool to a solid state, they form crystals.

Science ' The BibleEzekiel 7:19 - gold and silverRevelation 21:11 - God's glory is like a clear crystalPsalm 135:15-17 - their idols are dead and have never been alive (inorganic)Exodus 28:17 - the breastplate has minerals on it: carnelian, chrysolite, beryl, turquoise, lapis lazuli, emerald, jacinth, agate, amethyst, topaz, onyx and jasper

Mohs Hardness Scale1. talc - scratched easily w/ fingernail2. gypsum - scratched w/ fingernail3. calcite - scratched w/ copper penny4. flourite - scratched easily w/ steel knife5. apatite - scratched w/ steel knife 6. feldspar - scratch window glass7. quartz - scratch feldspar, but not topaz8. topaz - scratch quartz, but not corundum9. corundum - scratch topaz10. diamond - scratch all known minerals


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