Xonotlite
Mineral Ca6Si6O17(OH)2
About it
Tough, fibrous white to bluish-grey masses in contact-metamorphosed limestone and serpentinite; named for Tetela de Xonotla, Mexico.
- Type
- Mineral
- Group
- Silicate (inosilicate)
- Formula
- Ca6Si6O17(OH)2
- Hardness (Mohs)
- 6–6.5
- Specific gravity
- 2.71–2.72
- Streak
- white
- Lustre
- pearly, greasy, silky
- Crystal system
- Monoclinic
- Colours
- white, bluish grey, pale pink
- Transparency
- transparent, translucent, opaque
- Cleavage and fracture
- perfect in one direction
Typical values: real specimens vary. For more, see mindat.org.