|
|
|
| diamond
graphite |
|
| gold |
|
| iron |
|
| sulfur |
|
| halite |
|
| fluorite |
|
| calcite
aragonite |
|
| dolomite |
|
| coroundum |
|
| ice |
|
| anhydrite |
|
| gypsum |
|
| galena |
|
| pyrite |
|
| sphalerite |
|
| potassium feldspar
(K-spar) |
|
| quartz |
|
| * olivine |
|
| * pyroxene |
|
From the Mohs hardness scale, you need to know: gypsum, calcite,
fluorite,
potassium feldspar, quartz, corundum, and diamond.
* The two minerals with an asterisk you do not need to know. I placed them on the chart to show you how some minerals may seem to have a difficult formula, but they are actually very easy.