单词 | pyroxene |
释义 | pyroxene/pʌɪˈrɒksiːn /noun Any of a large class of rock-forming silicate minerals, generally containing calcium, magnesium, and iron and typically occurring as prismatic crystals.Extreme cases are found in mineral groups such as apatite, amphibole, pyroxene, feldspar, and tourmaline....
OriginEarly 19th century: from pyro- 'fire' + Greek xenos 'stranger' (because the mineral group was supposed alien to igneous rocks). |
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