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science ch 9
test
Term | Definition |
---|---|
minerals | are inorganic solid material found in nature . |
rocks | such as the atoms in the crystal is unique to each mineral. |
crystals | solid material that have such a pattern of atoms. |
cleavage | they split into pieces with smooth regular planes that reflect light. |
color | is the color of the mineral |
fracture | some break into pieces and have ruff edges . |
streak | wiping a rock across a glass tile is cleavage it leaves a streak |
luster | luster is how it shines. |
hardness | hardness is how hard it is and what is can scratch. |
gems | are minerals that are rare and can be polished and celled for jewelry. |
ore | a mineral is called a ore |