Types of quartz stone

Quartz stone is also a type of building stone product widely used in the modern construction industry. Quartzite formed from different primordial rocks can be distinguished according to structure, degree of metamorphism, by-products, rock symbiosis and occurrence. For example, quartzite formed from single mineral quartz sandstone has a relatively coarse grain size, often with a typical balanced mosaic structure, and contains more accessory minerals such as zircon; quartzite formed from siliceous rock, even if it is subjected to advanced metamorphism, minerals The particle size is rarely greater than 0.2 mm, and it has a dentate intergrowth structure and generally does not contain accessory minerals.

Quartzite can be divided into two types according to the quartz content:

1. Feldspar quartzite, the quartz content is greater than 75%, often contains minerals such as feldspar and mica, and the feldspar content is generally less than 20%. If the feldspar content increases, it will transition to shallow grained rock.

2. Quartzite, the content of quartz is greater than 90%, and it may contain a small amount of minerals such as mica, feldspar and magnetite.