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pyroxene
: any of a group of igneous-rock-forming silicate minerals that contain calcium, sodium, magnesium, iron, or aluminum, usually occur in short prismatic crystals or massive form, are often laminated, and vary in color from white to dark green or black
— py·rox·e·nic
\ˌpī-ˌräk-ˈsē-nik, pə-, -ˈse-\
adjective
— py·rox·e·noid
\pī-ˈräk-sə-ˌnȯid, pə-\
adjective or noun
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