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出典:Wiktionary
zirconolite (複数形 zirconolites)
出典:Wikipedia
出典:『Wikipedia』 (2011/04/16 13:53 UTC 版)
Zirconolite is a mineral, calcium zirconium titanate; formula CaZrTi2O7. Some examples of the mineral may also contain thorium, uranium, cerium, niobium and iron; the presence of thorium and/or uranium would make the mineral radioactive. It is black or brown in color.
zirconolite