zeolite

Từ điển Oxford Learners Wordfinder Dictionary

noun

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
• Hypernyms:
mineral, water softener
• Hyponyms:
chabazite, chabasite, heulandite, natrolite, phillipsite