pyroxenite
noun
py·rox·e·nite pī-ˈräk-sə-ˌnīt 
pə-
: an igneous rock that is free from olivine and is composed essentially of pyroxene
pyroxenitic
pī-ˌräk-sə-ˈni-tik
adjective pə-
Example Sentences
Recent Examples on the Web The other important minerals available in significant quantities are limestone, dolomite, manganese, mica, china clay, graphite, fire clay, coal bed methane, uranium, phosphorite, apatite, quartz, gold, feldspar and pyroxenite. 
Gurvinder Singh, Quartz India, 4 Oct. 2019
Gurvinder Singh, Quartz India, 4 Oct. 2019 Word History
First Known Use
1845, in the meaning defined above
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