Search and compare thousands of words and phrases in British Sign Language (BSL). The largest collection online.
How to sign: any of a family of glassy minerals analogous to feldspar containing hydrated aluminum silicates of calcium or sodium or potassium; formed in cavities in lava flows and in plutonic rocks
Categories: mineral, water softener
Within this category: chabazite, heulandite, natrolite, phillipsite