Qingdao cherry red granite surface of small make up to tell you how the morphological characteristics of granite have
Although granite is a good material of construction, but parts of granite will overflow radon, a naturally occurring radioactive gas. Radon can make the person suffering from lung cancer, the Hong Kong 13% of lung cancer is the cause of death the deceased radon concentration. Rich in quartz and feldspar in the coarse grain or grain of intrusive rocks, is the most common in the crust deep diagenesis, composed of magma deep in the earths crust cooled. Because of the paving stones and building stone, granite mining is an important industry for a time. Granite can show dike or bedrock output, more representative of the irregular rock mass is size varies greatly. Is the main components of feldspar and plagioclase and alkali feldspar are usually very rich, the relative abundance of both into the classification of granite base. Most granite, the ratio of two types of feldspar here are less than 1/2. Belongs to the category of the eastern United States, central and southwest, in southwest England, Baltic shield area, west and central France, Spain and many other areas of most of the granite. Plagioclase is greatly more than alkali feldspar granite type, common in some areas of the western United States. Alkali feldspar content greatly exceed the plagioclase granite originated in New England, Britain and dozens of locations in Oslo, Norway, but is smaller, the rock mass in northern Nigerias development is very broad. Rock quartz content of less than 20% of not call granite, together with the maximum content of magnesia mineral (iron) is about 20% (by volume). Less in the granite is the main mineral of the white mica, biotite, hornblende, pyroxene or rare fayalite. Biotite can originate in any type of granite, and usually have, though sometimes content is very few. Sodium amphibole and pyroxene (riebeckite amphibole, sodium, iron, aegirine) is unique to alkaline granite. If no class content in two classes of feldspar and much more than the other, then the hornblende, pyroxene are unlikely to be the main minerals; Dark minerals is usually black mica or white mica, or both.
