Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
felsic composition  | |
|---|---|
| RT | acidic composition |
| composition | |
| feldspathoid rocks | |
| felsite | |
| leucite | |
| nepheline group | |
| sodalite group | |
| SN | Felsic stands for FELdspars, FELdspathoids, and quartz (Si). It is also used for rocks composed mainly of FELdspars and quartz (Si). This term is a complement to mafic and is occasionally confused with acidic composition. Before 1995, also search felsic o |