odontolite造句

• While rarely encountered today, odontolite was once mined in large quantities specifically for its use as a substitute for turquoise in southern France.
• Odontolite is fossil bone or ivory that has been traditionally thought to have been altered by turquoise or similar phosphate minerals such as the iron phosphate vivianite.
• Some destructive tests may, however, be necessary; for example, the application of diluted hydrochloric acid will cause the carbonates odontolite and magnesite to effervesce and howlite to turn green, while a heated probe may give rise to the pungent smell so indicative of plastic.
• Other natural materials occasionally confused with or used in lieu of turquoise include : variscite and faustite; chrysocolla ( especially when impregnating quartz ); lazulite; smithsonite; hemimorphite; wardite; and a fossil bone or tooth called odontolite or " bone turquoise ", coloured blue naturally by the mineral vivianite.
• "' Odontolite "', also called "'bone turquoise "'or "'fossil turquoise "'or "'occidental turquoise "', is fossil bone or ivory that has been traditionally thought to have been altered by turquoise or similar phosphate minerals such as vivianite.