1) Beautiful stone 2) Cut mineral 3) Decorative stone 4) Gemstone mineral 5) Gemstone 6) Jewel 7) Jewel mineral 8) Mineral gemstone 9) Mineral jewel 10) Polished jewel 11) Polished mineral 12) Prized mineral 13) Precious jewel 14) Precious stone 15) Precious gem 16) Precious gemstone 17) Prized stone
Found on
https://www.crosswordclues.com/clue/zeolites
<chemical> Zeolites. A group of crystalline, hydrated alkali-aluminum silicates. They occur naturally in sedimentary and volcanic rocks, altered basalts, ores, and clay deposits. Some 40 known zeolite minerals and a great number of synthetic zeolites are available commercially. ... Chemical name: Zeolites ... (12 Dec 1998) ...
Found on
http://www.encyclo.co.uk/local/20973
Zeolites are a group of complex silicate minerals mostly occurring in cavities in basic volcanic rocks. They are usually colourless or white and are relatively soft. Formerly used as water softeners, they are used as molecular sieves in the petroleum industry and as drying agents.
Found on
http://www.probertencyclopaedia.com/browse/HZ.HTM
No exact match found.
