What is the relationship between igneous rocks and basalt and granite
Classification of igneous rocks:
Magmatic rocks are mainly composed of silicate minerals, in addition, often also contains trace minerals such as magnetite. According to the rock SiO2 content, magmatic rocks can be divided into four categories: ultrabasic rock: SiO2 <45%; basic rock: SiO2 = 45 ~ 52%; neutral, alkaline rock: SiO2 = 52 ~ 65% Rock: SiO2> 65%.
Granite
A kind of deep igneous rock, which belongs to magmatic rock.The crystal of its mineral grains is large and the particle size is similar, which is inlaid and granular crystal structure. The different kinds of minerals are arranged in a regular or irregular way.
Basalt
A kind of dense or foamy rock that is solidified from a volcanic eruption, which belongs to a magmatic rock. The basalts are generally black, sometimes grayish green and dark purple, etc. The granules are fine and have a patchy structure in which the pores Construction and almond construction are common.
Basalt, granite belongs to igneous rock, you can look at the definition of the three:
A rock formed by a mantle or crust that is formed by melting or partially melting material such as magma cooling and consolidation. The magma may consist of a molten material of all liquid phase, called melt; it may contain volatile and partially solid matter such as crystals and rock fragments.
