| Fourmarierite | |
| Category: | Oxide minerals |
| Imasymbol: | Fmr[1] |
| Strunz: | 4.GB.25 |
| System: | Orthorhombic |
| Class: | Pyramidal (mm2) H-M Symbol: (mm2) |
| Symmetry: | Bb21m |
| Color: | Red, golden-red, brown |
| Cleavage: | On, perfect |
| Mohs: | 3 - 4 |
| Luster: | Adamantine |
| Diaphaneity: | Transparent |
| Density: | 6.046 g/cm3 |
| Other: | Radioactive |
Fourmarierite is a secondary uranium-lead mineral. It was named for the Belgian geologist Paul Fourmarier (1877–1970). Its chemical formula is .[2]