noun
definition
A monoclinic pyroxene mineral, a magnesium calcium silicate with the chemical formula CaMgSi2O6, found in igneous and metamorphic rocks.
Examples of diopside in a Sentence
Other minerals present include diopside, pargasite, spinel, phlogopite, apatite, graphite, pyrrhotite and zircon (Davidson 1943 ).
Hedenbergite, or calcium iron pyroxene, is a black mineral closely allied to diopside and, owing to the isomorphous replacement of iron by magnesium, there is no sharp line of division between them.
The pyroxenes may be pale green diopside, dark green aegirine-augite, or blackish green aegirine (soda iron pyroxene), and in many cases are complex, the outer portions being aegirine while the centre is diopside.
Many semi-precious and precious stones are found in Utah, including garnet (long sold to tourists by the Navaho Indians), amethyst, jasper, topaz, tourmaline, opal, variscite (or " Utahlite "), malachite, diopside and Smithsonite.