| A | B |
|---|
| mineral color | look at the min. to determine |
| mineral color | not very useful for identifying min. |
| mineral luster | how the min. reflects light |
| mineral luster | shiny or dull |
| mineral luster | metallic or non-metallic |
| mineral streak | color of the POWDER made when rubbed on a streak plate |
| mineral hardness | resistance to being scratched |
| mineral hardness | measured by the Mohs Scale |
| mineral hardness | 1=very soft; 10=very hard |
| mineral hardness | fingernail =2.5, penny=3.5, glass=5.5, streak plate=7 |
