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LiAlSi2O6 A white to yellowish-, purplish-, or emerald-green clinopyroxene mineral occurring in prismatic crystals; hardness is 6.5-7 on Mohs scale, and specific gravity 3.13-3.20; an ore of lithium. Also known as triphane.



(also triphane), a mineral of the clinopyroxene group, which belongs to the inosilicate class of silicates. The chemical composition is LiAl[Si2O6]. Spodumene forms elongated prismatic crystals 1–10 cm in length; the length of the crystals sometimes reaches 1 m and, less frequently, 10–16 m. Colors are gray, yellowish, greenish, or pinkish, but sometimes the mineral is colorless. The transparent pink and violet-pink varieties are called kunzite, whereas the emerald green varieties are called hiddenite.

Spodumene has a vitreous luster, a hardness of 6.5–7 on Mohs’ scale, a density of 3,100–3,200 kg/m3, and a perfect cleavage along the prism. When heated in the temperature range 950°-l 100°C, natural α-spodumene changes to the β-modification of the crystal structure (β-spodumene).

Spodumene occurs in granitic pegmatites of the sodium-lithium type in association with quartz, microcline, albite, beryl, lepidol-ite, tantalite, and, sometimes, pollucite and other minerals. It often alters to aggregates of eucryptite (LiAlSiO4) or aggregates of sericite with albite. In the waste mantle, it alters easily to clay minerals. Spodumene is the primary mineral of lithium ores; kun-zite and hiddenite are gems. In other countries, spodumene is used in the production of ceramics.


Ginzburg, A. I. “Spodumen i protsessy ego izmeneniia.” Tr. Mineralogicheskogo muzeia AN SSSR, 1959, issue 9.
Gordienko, V. V. Mineralogiia, geokhimiia i genezis spodumenovykh pegmatitov. Leningrad, 1970.
Ginzburg, A. I., and G. P. Lugovskoi. “Mestorozhdeniia litiia.” In Rudnye mestorozhdeniia SSSR, vol. 3. Moscow, 1974.


References in periodicals archive ?
The pegmatite fields of San Luis have an important past record of producing mica, beryl, spodumene, tantalite (tantalum oxide), columbite (niobium oxide), and recently potassium feldspar, albite and quartz.
The Company also owns the Mt Cattlin Spodumene and Tantalum Mine near Ravensthorpe in Western Australia, where tantalum production commenced in April 2016 with its operating partner General Mining Corporation Limited ("GMM").
The production of LiOH involves hydrochloric acid leaching of spodumene concentrate, purification of lithium chloride solution and electrolysis applying proprietary technology owned by Reed.
The Company has two major projects advancing to feasibility in 2012: the Sal de Vida lithium and potash brine project in Argentina and the James Bay bulk tonnage spodumene project in Quebec.
The significant decrease in the residual products indicates that a large percentage of the spodumene was chlorinated along with other metals.
The proposed 8000 m drilling for the spring/early summer drill program will target the new spodumene pegmatite dykes located between the Main Dyke and the South Dyke.
The oreXpress field NIR spectrometer running EZ-ID offers two spectral libraries (USGS and SPECMin) to identify lepidolite and spodumene in pegmatites.
We will use the funds for working capital and ramp up of our Mt Cattlin spodumene project in Western Australia and Jiangsu lithium carbonate plant in China, which we're due to commission at the end of the quarter.
Some of the "green bolts," as the crystals were referred to by the local farmers, were immediately recognized as emeralds, but others were something new--a gem variety of the mineral spodumene that would later become known as "hiddenite.
Jiangli New Materials currently tolls lithium hydroxide and lithium carbonate for Albemarle utilising spodumene from Albemarle's Talison joint venture in Australia.
Jiangli New Materials currently tolls lithium hydroxide and lithium carbonate for Albemarle, utilizing spodumene from Albemarle's Talison joint venture in Australia.
At full capacity, the concentrator can process 1 million metric tons per year (mt/y) of spodumene ore and produce 137,000 mt/y of lithium oxide concentrate, also containing 56,000 lb/y of byproduct tantalum as [Ta.