Afghanistan, China, Madagascar, Southern and central Africa, Pakistan, Sri Lanka, USA
India, Canada, Brazil
Red, Reddish, orange, Brown
Colorless, Reddish, White, pink, Green, Yellow, Violet, White, pink, Green, Yellow, Violet, White, Colorless, Blue, Green, Brown, Yellow, pink, Violet, White, pink, Green, Yellow, Violet
ConchoidalArthur Thomas, Conchoidal, Brittle
Uneven, UnevenArthur Thomas, Gemstones (2009)
Mn 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.