Chemical Weathering Granite

Chemical weathering occurs when water dissolves minerals in a rock producing new compounds.

Chemical weathering granite. The remainder is 15 aluminum oxide and 10 various othe. Granite contains on average 75 of silicon dioxide quartz and feldspar various metal aluminosilicates. Some minerals like quartz are virtually unaffected by chemical weathering while. 5 2 chemical weathering chemical weathering results from chemical changes to minerals that become unstable when they are exposed to surface conditions.

Breakdown of rock to depths of many metres induced by the chemical alteration of rock minerals by groundwater. The reaction of feldspar minerals in granite with rainwater produces kaolinite white clay known as china clay used in the production of porcelain paper and glass. Hydrolysis is the chemical weathering of minerals by a mildly acidic water that forms when rains dissolves trace gases in the atmosphere. Hydrolysis occurs for example when water comes in contact with granite.

What are the products of physical and chemical weathering of granite. As demonstrated in the following reaction this causes potassium feldspar to form kaolinite with potassium ions bicarbonate and silica in solution as byproducts. Granite is extremely hard and less affected by the freeze thaw cycle the forces of abrasion and the surface exfoliation processes that are all a part of physical weathering. This reaction is called hydrolysis.

Chemical weathering is the breakdown of rock induced by reactions between rock minerals and groundwater.