magnesium fluosilicate

magnesium fluosilicate

[mag′nē·zē·əm ′flu̇·ə′sil·ə‚kāt]
(inorganic chemistry)
MgSiF6·6H2O Water-soluble, efflorescent white crystals; used in ceramics, in mothproofing and waterproofing, and as a concrete hardener. Also known as magnesium silicofluoride.