tectosilicate

/T EH0 K T AA1 S IH1 L AH0 K EY0 T/
noun
  1. 1

    (mineralogy) Any of various silicate minerals, mostly aluminosilicates, with a three-dimensional framework of silicate tetrahedra with SiO₂ or a 1:2 ratio, making up the greater part of Earth's crust.

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