Definition of diopside in English:



mass noun
  • A mineral occurring as white to pale green crystals in metamorphic and basic igneous rocks. It consists of a calcium and magnesium silicate of the pyroxene group, often also containing iron and chromium.

    • ‘They have a mineralogical association of quartz, diopside, actinolite, plagioclase and K-feldspar.’
    • ‘The rock is dominated by well-oriented hornblende surrounding porphyroclasts of diopside, which is patchily transitional into hornblende.’
    • ‘The Herbeira websterites contain diopside, enstatite, and pargasite with olivine, garnet, spinel, magnetite and ilmenite as minor phases.’
    • ‘Other minerals from the State Line kimberlite pipes have gem potential; these include pyrope and chrome diopside.’
    • ‘Brown, green, and gray prismatic crystals of diopside to 8 cm in length appear to be somewhat altered.’
    • ‘Aegirine is distinctive because of its brown color, whereas diopside is the blue alteration seen on babingtonite.’
    • ‘This mineral always shows some degree of alteration to either aegirine or diopside.’
    • ‘Here it was found sparsely as rounded grains associated with pargasite, diopside, oligoclase and lazurite.’
    • ‘Some of the characteristic minerals found in kimberlite are olivine, pyrope garnet, enstatite, diopside, ilmenite, phlogopite, perovskite, magnetite, and spinel.’
    • ‘The main minerals identified were mainly calcite also some diopside, wollastonite, iron oxides and a few scattered dolomite crystals.’
    • ‘The occurrence is in deformed, silicified marble accompanied by forsterite, diopside, zcolites, scapolite, and pyrite.’
    • ‘These include aquamarine, chrome diopside, diamond, jade, labradorite, forsterite, opal, pyrope, variscite, and many unique agates and jaspers.’
    • ‘Interesting thin plates of silver coating rhodonite and diopside in massive galena are reported from the mines at Garpenberg, Sweden.’
    • ‘The veins are surrounded by a 5-to 10-cm-wide alteration zone that consists of calcite, dolomite, diopside, hedenbergite, vesuvianite, and base-metal sulfides.’
    • ‘Other areas showed mixtures of fine-grained garnet, diopside, and other Ca-silicate minerals.’


Early 19th century: from French, formed irregularly from di- ‘through’ + Greek opsis ‘aspect’, later interpreted as derived from Greek diopsis ‘a view through’.