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**Chemical formula:** Ca₂Mg₅(Si₈O₂₂)(OH)₂ **Hardness:** 5‒6 **Density:** 3 g/cm³ **Crystal system:** Monoclinic **Luster:** Vitreous, silky **Description:** Tremolite is a member of the amphibole group of silicate minerals. Pure magnesium tremolite appears creamy white, but as iron content increases, it takes on a darker green hue. Nephrite, one of the two minerals classified as jade, is a green variety of tremolite. The fibrous form of tremolite is toxic and is classified as asbestos. Tremolite commonly forms through the metamorphism of sediments rich in dolomite and quartz. ## Keywords mineral tremolite texture color ornamental stone semi-precious gemstone
