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pectolite

noun pec·to·lite \ ˈpektəˌlīt \
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Definition of pectolite

plural -s
: a whitish or grayish monoclinic mineral NaCa2Si3O8(OH) consisting of a basic sodium calcium silicate occurring in crystal aggregates or fibrous masses (hardness 5, specific gravity 2.68–2.78)

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Origin and Etymology of pectolite

German pektolith, from Greek pēktos compacted (from pēgnynai to fix, fasten) + German -lith -lite

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