| Title | Cave Name |
|---|---|
| Natrojarosite |
Jungle Pot Cave, South Africa |
| Newberyite |
Skipton (lavatube) Cave, Victoria, Australia |
| Niahite |
Niah Great Cave, Sarawak, Malaysia |
| Nickelalumite |
Mbobo Mkulu Cave, South Africa - mineral species not aproved by IMA-CNMNC |
| Niter |
Pulo di Molfetta caves, Apulia, Italy |
| Nitrammite |
Nicajack Cave, Tennessee, USA - mineral species discredited by IMA-CNMNC (synonym for gwibahaite) |
| Nitratine |
a small cave near Calico, California, USA |
| Nitrocalcite |
Pulo di Molfetta caves, Apulia, Italy |
| Nitromagnesite |
Great Cave, Kentucky, USA |
| Norsethite |
Crystal's Cave, Codreanu mine, Romania |