umptekite (Q43753)
From geokb
A variety of alkali-feldspar-syenite consisting of microperthite, arfvedsonite, aegirine and, sometimes, nepheline
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | umptekite |
A variety of alkali-feldspar-syenite consisting of microperthite, arfvedsonite, aegirine and, sometimes, nepheline |
