| Answer | Crossword Clue |
|---|---|
| feldspath | (obsolete) a common rock-forming mineral also FELDSPAR, FELSPAR |
| feldspaths | FELDSPATH, (obsolete) a common rock-forming mineral also FELDSPAR, FELSPAR |
| feldspathoid | FELDSPATH, (obsolete) a common rock-forming mineral also FELDSPAR, FELSPAR |
| orthoclase | A common rock-forming mineral occurring typically as white or pink crystals. It is a potassium-rich alkali feldspar and is used in ceramics and glassmaking |
| orthoclases | A common rock-forming mineral occurring typically as white or pink crystals. It is a potassium-rich alkali feldspar and is used in ceramics and glassmaking |
| aluminosilicate | A silicate in which aluminum replaces some of the silicon, esp. a rock-forming mineral such as a feldspar or a clay mineral |
