| The skarns also contain hornblende, calcite, pyroxene, tremolite, pyrrhotite, molybdenite, galena, chalcopyrite, arsenopyrite, garnet, and pyrite. |
| At the Redskin mine, molybdenite is found in small cylindrical greisen pipes in the Redskin Granite. |
| At Azegour, Morocco, uraninite occurs in tactite with molybdenite, chalcopyrite, barite, pyrite, hematite, and garnet. |
| In the deposits of New South Wales they are found associated with molybdenite in quartz gangue, in pipe-like deposits in granite. |
| Molybdenum never occurs as the free element in nature, but is most commonly found in the minerals molybdenite and wulfenite. |
| Willman reported astrophyllite, biotite, molybdenite, and riebeckite associated with smoky quartz and microcline on Mount Kineo at North Cheyenne Canyon. |
