| A | B |
|---|
| crystal | a solid in which the atoms are arranged in a pattern again and again |
| Mohs Hardness Scale | a scale ranking ten minerals from softest to hardest; used in testing the hardness of minerals |
| fracture | the way a mineral looks when it breaks apart in an irregular way |
| geode | a hollow rock inside which mineral crystals have grown |
| solution | is a mixture in which one sunstance is dissolved in another |
| inorganic | not formed form living things or the remains of living things |
| streak | the color of a mineral's powder |
| vein | is a narrow channel or slab of a mineral that is different from the surrounding rock |
| luster | the way a mineral reflects light from its surface |
| cleavage | a mineral's ability to split easily along flat surfaces |
| crystallization | the process by which atoms are arranged to form a material with a crystal structure |
| mineral | a naturally occurring, inorganic solid that has a crystal structure and a definite chemical composition |
