| The fluorite is typically a gangue mineral and is only locally recovered as an ore. |
| Its down-dip sulfide ores were sideritic and pyritic, with golden barite forming one of the gangue minerals. |
| As a result, quartz is an uncommon gangue mineral within most of the district. |
| The main gangue minerals that make up the vein are massive white calcite, quartz, and prehnite. |
| The main ore minerals are galena, chalcopyrite, sphalerite, and tetrahedrite that are associated with quartz and barite gangue. |
| Exceptionally well-crystallized zinc-bearing rhodonite was a locally abundant gangue mineral at Franklin and, to a lesser extent, Sterling Hill, Sussex County, New Jersey. |
