| A | B |
|---|
| mineral | a naturally occurring, inorganic solid that has a crystal structure and a definite chemical composition |
| inorganic | not formed from living things or the remains of living things |
| crystal | a solid in which the atoms are arranged in a pattern that repeats again and again |
| streak | the color of a mineral's powder |
| luster | the way a minera reflects light from its surface |
| mohs hardness scale | a scale ranking ten minerals from softest to hardest;used in testing the hardness of mineralsst |
| clevage | a mineral's ability to split easily along flat surfaces |
| fracture | the way a mineral looks when it breaks apart in an irregular way |
| geode | a hollow rock insdie which mineral crystals have grown |
| solution | a mixture in which one substance is dissolved in another |
| vein | a narrow deposit of a mineral that is sharplydifferent from the surrounding rock |
| crystallization | the process by which atoms are arranged to form a material with a crystal structure |
| gemstone | a hard, colorful mineral that has a brilliant or glassy luster and is valued for its appearance |
| ore | rock that contains a metal or other economically useful mineral |
| smelting | the process by which ore ismelted to separate he useful metal from other elements |
| alloy | a solid mixture of two or more elements at least one of which is a metal |
