| Home |
| Rocks and Minerals |
| Shale |
| Hornfels |
| Diabase |
| Limonite |
| Greenstone |
| Rhyolite |
| Quartzite |
| Conglomerate |
| Limestone |
| Sandstone |
| Calcite |
| Quartz |
Quartz |
| Quartz is a clearish white mineral found in Frederick County. It is also the most common mineral is the world. |
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