| Answer | Crossword Clue |
|---|---|
| allophanes | ALLOPHANE, a translucent, colored aluminum silicate |
| allophane | a translucent, colored aluminum silicate |
| sodalite | a transparent to translucent mineral that consists of a silicate of sodium and aluminum with some chlorine, has a vitreous or greasy luster, and is found in various igneous rocks |
| analcime | a white or slightly colored mineral that consists of hydrated silicate of sodium and aluminum and occurs in various igneous rocks in massive form or in crystals |
