Foitite

foitite

(☐,Na)(Fe²⁺₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃OHChemical formula

TrigonalCrystal system

7.0Mohs hardness

Facts

Chemical formula: (☐,Na)(Fe²⁺₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃OH
Crystal system: Trigonal
Mohs hardness: 7.0
Elements in formula: Sodium, Iron, Aluminium, Silicon, Oxygen, Boron, Hydrogen
Number of elements: 7
IMA status: Approved
Type locality: California
Named after: Franklin F. Foit, Jr.