Silicic is magma or igneous rock rich in silica. The amount of silica that constitutes a silicic rock is usually put at at least 65 percent. Granite and rhyolite are typical silicic rocks.

Silicic is the group of silicate magmas which will eventually crystallise a relatively small proportion of ferromagnesian silicates, such as amphibole, pyroxene, and biotite. The main constituents of a silicic rock will be minerals rich in silica-minerals, like silicic Feldspar or even free silica as Quartz.

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Other articles related to "silicic":

Silicic Acid - Preparation and Occurrence
... Silicic acids may be formed by acidification of silicate salts (such as sodium silicate) in aqueous solution ... The main problem for the chemist is that these silicic acids readily lose water to form silica gel, a form of silicon dioxide ... These algae polymerise the silicic acid to so-called biogenic silica, used to construct their cell walls (called frustules) ...
Chemical Weathering - Hydrolysis On Silicates and Carbonates
... ionized water molecules ⇌ ions in solution + silicic acid in solution This reaction theoretically results in complete dissolution of the original mineral, if enough water is available to drive the reaction ... carbon dioxide + water ⇌ Magnesium and bicarbonate ions in solution + silicic acid in solution This hydrolysis reaction is much more common ... acid + water ⇌ Kaolinite (a clay mineral) + silicic acid in solution + potassium and bicarbonate ions in solution ...
Key Characteristic of Porous Silicon - Non-toxic Waste Product
... is the degradation of porous silicon into monomeric silicic acid (SiOH4) ... Silicic acid is reputed to be the most natural form of element in the environment and is readily removed by kidneys ... The human blood plasma contains monomeric silicic acid at levels of less than 1 mg Si/l, corresponding to the average dietary intake of 20–50 mg/day ...