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chemical weathering of orthoclase feldspar
The particles in the sediments are cemented as pressure squeezes out water. The dissolved minerals in the water, usually silica or calcite, then become solid (crystallize), tying the particles together.
Sedimentary rock particle cements would include iron, calcite, silica, and clay minerals. Igneous and metamorphic rocks are held together by minerals that have crystallized from magma or from recrystallization of existing minerals.
Clay, silica, and carbonate minerals.
silica
These are known as silicate minerals or silicates.
Silica.
Magma is composed of molten silicate minerals, dissolved gasses, and sometimes crystallized minerals.
There are no minerals in pumice, just glass, but there is a high level of silica.
No. Sand is composed of solid silicate minerals. Nothing eats such material. The closest thing we have are diatoms, which extract dissolved silica from water to make glass-like shells.
Silica and Feldspar
Gypsum is in Plaster and Silica is in silicone.