| A | B |
|---|
| mineral | naturally occuring, inorganic solid that has a definite crystalline structure |
| element | pure substance that cannot be broken down by ordinary means |
| compound | substance made out of two or more elements that have been chemically joined |
| native element | mineral composed of only one element |
| crystal | a solid whose atoms, ions, or molecules are arranged in a definite pattern |
| silicate minerals | make up 90% of the earth's crust |
| silicate minerals | contains a combination of silicon and oxygen |
| nonsillicate minerals | do not contain a combination of oxygen and silicon |
| streak | the color of a mark made by a mineral |
| luster | the way a surface reflects light |
| streak plate | unglazed porcelain |
| cleavage | the tendency of some minerals to break along smooth, flat surfaces |
| fracture | the tendency of some minerals to break unevenly along curved surfaces |
| hardness | a mineral's resistance to being scratched |
| density | the measurement of how much matter is in a given space |
| pluton | solidified magma |
| pegmatites | tear shaped bodies of hardened magma |
| ore | natural material that is mined because of its value |
| reclamation | returning land to its original condition after mining |
| gemstones | nonmetallic minerals valued for beauty and rarity |
