Fire-type rocks are formed when molten stones cool and harden deep inside our earth. Sometimes such molten rock cools inside the earth and other times when it is seen erupting from a volcano on the surface it is called lava. And that lava cools very quickly and at that time no crystals form and the rock looks shiny and glassy. Sometimes during this cooling process of lava gas bubbles are trapped in the rock and the type of rock that leaves small holes and rocks in the rocks is known as igneous rock.
1. Granite
Granite is known as a coarse-grained Ignatius rock. Granite igneous rock is mostly composed of plagioclase, quartz and alkali feldspar. Granite igneous rock is composed of magma with a high content of alkali metal oxides and silica and which gradually solidifies underground.
2. Rhyolite
Rhyolite is the richest silica of igneous rocks. Rhyolite igneous rock is usually fine-grained in texture. But this type of igneous rock can be porphyritic and contains mineral crystals. Rhyolite igneous rock consists mainly of quartz, cyaniding and plagioclase. Rhyolite igneous rock is the extruded equivalent of granite.
3. Pegmatite
This type of igneous rock is known as a magical rock. Pegmatite igneous rock forms underground. The interlocking crystals in these rocks are usually larger than 2.5 cm in size. Most pegmatite igneous rock is composed of mica, quartz and feldspar. Pegmatite igneous rock has a silicic structure similar to granite.
4. Basalt
Basalt igneous rock is known as a mafic extrusive igneous rock formed from the rapid cooling of lava rich in iron and magnesium. More than 90% of all volcanic rocks on Earth are basalt igneous rock. This type of rock is also known to be an important rock type on objects from other planets in the Solar System.
5. Gabbro igneous rock
Stones of this type of igneous rocks are a phaneritic and mafic intrusive. Gabbro Stone is formed by the slow cooling of magnesium-rich and iron-rich magma in a deep polycrystalline mass beneath the earth's surface. Much of the Earth's oceanic crust is made up of gabbro rock, which forms on the Mediterranean belt.
6. Obsidian igneous rock
This type of rock on igneous rocks is known as a naturally occurring volcanic rock. The obsidian rock forms the outer Ignatius rock. This type of rock is formed on igneous rocks when the felsic lava from a volcano cools rapidly with minimal crystal growth. This stone is found to be hard, brittle and amorphous. Obsidian is used experimentally as a surgical scalpel blade.
7. Lherzolite igneous rock
This type of stone is known as a type of Ultramafic us Ignatius stock. Lherzolite igneous rock is a coarse grained rock. Lherzolite contains 40 to 90% olivine. This stone contains chromium, garnet and aluminum spinels. The lower mantle of the moon may be made of Lherzolite stone.
8. Pumice igneous rock
This type of stone is called pumicite in the form of its powder or dust. Pumice is known as a volcanic rock. Pumice igneous rock contains very vesicular rough textured volcanic glass. This type of stone may or may not contain crystals. This type of stone has been used for centuries in the construction and beauty industries as well as in early medicine.
9. Kimberlite igneous rock
Kimberlite stone is considered an important part of igneous rock. Kimberlite stone sometimes contains diamonds. This type of stone is found in the earth's crust in vertical formations. Kimberlite stone also occurs as horizontal seals. Kimberlite is the most important source of mining diamonds in igneous rock today.
10. Dacite igneous rock
This type of rock is known as a volcanic rock formed by the rapid solidification of lava. Dacite is low in stone and low in alkaline metal oxides. Dacite has fineness for porphyritic texture. Dacite igneous rock is mainly composed of plagioclase feldspar and quartz.