| 释义 |
Definition of sphene in English: sphenenoun sfiːnsfēn mass nounA greenish-yellow or brown mineral consisting of a silicate of calcium and titanium, occurring in granitic and metamorphic rocks in wedge-shaped crystals. Example sentencesExamples - How about sphene versus titanite, or celestine versus celestite?
- Titanium resides principally in heavy minerals: ilmenite, rutile, anatase and sphene, whereas Zr is located predominantly in zircon.
- Ilmenite is now largely preserved as skeletal crystals in which exsolved magnetite lamellae have been altered, and the ilmenite itself partly altered to sphene.
- The main constituent phases of these rocks are plagioclase, hornblende, pyroxene, quartz and K-feldspar, and accessory phases include magnetite, sphene, zircon and apatite.
- One of my favorite gems is sphene, or more properly, titanite.
Origin Early 19th century: from French sphène, from Greek sphēn 'wedge'. Definition of sphene in US English: sphenenounsfēn A greenish-yellow or brown mineral consisting of a silicate of calcium and titanium, occurring in granitic and metamorphic rocks in wedge-shaped crystals. Example sentencesExamples - Titanium resides principally in heavy minerals: ilmenite, rutile, anatase and sphene, whereas Zr is located predominantly in zircon.
- How about sphene versus titanite, or celestine versus celestite?
- The main constituent phases of these rocks are plagioclase, hornblende, pyroxene, quartz and K-feldspar, and accessory phases include magnetite, sphene, zircon and apatite.
- Ilmenite is now largely preserved as skeletal crystals in which exsolved magnetite lamellae have been altered, and the ilmenite itself partly altered to sphene.
- One of my favorite gems is sphene, or more properly, titanite.
Origin Early 19th century: from French sphène, from Greek sphēn ‘wedge’. |