| A | B |
|---|
| MINERAL | A NATURALLY OCCURRING, INORGANIC SOLID WITH A DEFINITE COMPOSITION AND AN ORDERLY ARRANGEMENT OF ATOMS. |
| CRYSTAL | A SOLID IN WHICH THE ATOMS ARE ARRANGED IN REPEATING PATTERNS. |
| MAGMA | HOT MELTED ROCK MATERIAL. |
| SILICATE | MINERALS THAT CONTAIN SILICON AND OXYGEN AND USUALLY ONE ORMORE OTHER ELEMENTS. |
| HARDNESS | A MEASURE OF HOW EASILY A MINERAL CAN BE SCRATCHED. |
| LUSTER | A CHARACTERISTIC OF HOW LIGHT REFLECTS FROM A MINERAL'S SURFACE. |
| STREAK | THE COLOR OF THE MINERAL WHEN IT IS POWDERED. LEFT ON AN UNGLAZED PIECE OF PORCELAIN. |
| CLEAVAGE | THE ABILITY OF A MINERAL TO BREAK ALONG A SMOOTH, FLAT SURFACE. |
| FRACTURE | MINERALS THAT BREAK WITH UNEVEN, ROUGH OR JAGGED EDGES. |
| MOHS SCALE OF HARDNESS | A RATING OF 1-10 TO SHOW A COMPARISON OF A MINERAL'S HARDNESS |
| GEMS | HIGHLY PRIZED MINERALS BECAUSE THEY ARE RARE AND BEAUTIFUL |
| ORE | A MINERAL THAT CONTAINS A USEFUL SUBSTANCE THAT CAN BE MINED FOR PROFIT. |
| VEIN MINERAL | A MINERAL DEPOSIT LEFT IN THE SPACES OF ROCKS. |
| WASTE ROCK | UNWANTED MATERIAL LEFT OVER WHEN ORE IS MINED. |
