[mass noun] A translucent, typically greyish-white aluminosilicate mineral which is an important source of lithium.
- ‘The dike is characterized by a greater abundance of muscovite than biotite; it also contains columbite-tantalite, cassiterite, beryl, spodumene, lepidolite, montebrasite, pollucite, and tourmaline.’
- ‘They are often associated with large crystals of kunzite, the lilac-colored variety of spodumene.’
- ‘Purple lepidolite and gray spodumene also can be found, and microcrystals of mangano-columbite are common.’
- ‘Autunite is widespread in the eastern United States and is particularly well known as an accessory in complex pegmatites that have been prospected for mica, feldspar, spodumene, and gems.’
- ‘It never occurs as a free element, but is found in minerals such as spodumene, petalite, and lepidolite.’
Early 19th century: from French spodumène, from Greek spodoumenos burning to ashes, present participle of spodousthai, from spodos ashes.
We take a look at several popular, though confusing, punctuation marks.