Petalite
Videos
Petalite, also known as castorite, is a lithium aluminum phyllosilicate mineral LiAlSi4O10, crystallizing in the monoclinic system. Petalite occurs as colorless, pink, grey, yellow, yellow grey, to wh
Petalite from Minas Gerais State, Brazil (size: 3x4 cm)
Petalite from Paprok, Nuristan Province, Afghanistan (size: 7.3 × 2.9 × 2.4 cm)
Spodumene
Videos
Spodumene is a pyroxene mineral consisting of lithium aluminium inosilicate, LiAl2, and is a commercially important source of lithium. It occurs as colorless to yellowish, purplish, or lilac kunzite,
Petalite
…occurs as colorless, pink, grey, yellow, yellow grey, to white tabular crystals and columnar masses. It occurs in lithium-bearing pegmatites with spodumene, lepidolite, and tourmaline. Petalite is an important ore of lithium, and is converted to spodumene and quartz by heating to ~500 °C and under 3 kbar…
Walnut Hill Pegmatite Prospect, Huntington, Hampshire County, Massachusetts, U.S. (size: 14.2 × 9.2 × 3.0 cm)
An almost colorless kunzite crystal (upper left), a cut pale pink kunzite (upper right), and a greenish hiddenite crystal (below) (unknown scale)
Kunzite, Nuristan Province, Afghanistan
Hiddenite from Araçuaí, Minas Gerais, Brazil