pyroxenoid
/pʌɪˈrɒksənɔɪd/Mineralogy
noun
Any of a small group of triclinic silicates formerly classed as pyroxenes but now differentiated from them on structural grounds, including rhodonite, wollastonite, and pectolite.
Origin
1930s. From pyroxene + -oid. Compare earlier pyroxenite.