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ch 3 vocab
Term | Definition |
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pragmatists | as magma moves upward, it can form teardrop-shapes bodies called pegmatites. the mineral crystals in legs pegmatites become extremely large, sometimes growing to several meters across. |
plutons | as magma rises upward through the crust, it sometimes stops moving before it reaches the surface and cools slowly, forming millions of mineral crystals. Eventually, the entire magma body solidifies to form a pluton. |
ore | a natural material whose concentration of economically valuable minerals is high enough for the material to be mined profitably |
reclaimation | the process of returning land to its original condition after mining is completed |
hardness | measure of the ability of a mineral to resist scratching |
density | the ratio of the mass of a substance to the volume of the substance |
luster | the way in which a mineral reflects light |
streak | the color of the powder of a mineral |
clevage | the splitting of a mineral along smooth, flat surfaces |
fracture | the manner in which a mineral breaks along either curved or irregular surface |
silicate mineral | a mineral that contains a combination of silicon, oxygen, and one or more metals |
non silicate mineral | that does not contain compounds of silicon and oxygen |
mineral | a naturally formed, inorganic solid that has a definite crystalline structure |
element | a substance that cannot be separated or broken down into simpler substances by chemical means |
compound | a substance made up of atoms of two or more different elements joined by chemical bonds |
crystal | a slid whose atoms, ions, or molecules are arranged in difiente patterns |