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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 ?
In line with Galaxy's periodic reporting obligations, the Company undertook a review of key balance sheet items with consideration for the current and projected lower spodumene price estimates for the short to medium term.
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.
They also could be fluid inclusions that resulted from the crystallization of spodumene and/or other daughter minerals on the wall of the CIs from the entrapped liquid during cooling, such that they had no obvious daughter minerals.
All analysis is in US dollars and assumes a selling price of US$6,900/t for lithium hydroxide and lithium carbonate, a spodumene cost of US$350/t CIF, an AUD exchange rate of US$1.05 and a MYR exchange rate of US$0.32.
At full capacity, Galaxy will process 137,000 tpa of spodumene concentrate and 56,000 lbs per annum of contained tantalum.
LieNA offers a number of advantages in terms of spodumene processing, including the following.
"Altura has a highly experienced in-house team that successfully led the financing, construction and commissioning of its spodumene mine at Pilgangoora," Mr Lynch said.
- Alliance will continue to own and operate the Bald Hill Mine and will supply the spodumene to the Joint Venture with the cost of production and transport recovered from sales of lithium hydroxide
According to Nemaska, Whabouchi is an important spodumene lithium hard rock deposit both in volume and grade.