A volcano and rock
Igneous rock
The rock which igneous rock … magma got cold, and hardened. I get cold, and the igneous rock is divided into following two kinds by a difference of the one.
- Volcanic rock … magma gets cold suddenly in the surface of the earth and surface of the earth neighborhood and hardens and is in love.
- Abyssal rocks … magma gets cold slowly in a deep place under the ground and hardens, and there is it.
Volcanic rock
There is the spot-formed organization … volcanic rock from a big crystal (phanerocryst) and a small grain (foundation stone) and is the structure.
The volcanic rock is divided into a rhyolite, andesite, basalt more by the white order of the color.
In the case of this figure, I can suppose that it is basalt because there are many black ratios.
Abyssal rocks
The equal granulation organization … abyssal rocks do not have a foundation stone in a cool thing slowly and there is it from a crystal of the same size and is the structure.
The abyssal rocks are divided into granite, diorite, はんれい rock more by the white order of the color.
In the case of this figure, I can suppose that it is diorite because white and a black ratio are half-and-half.
Mineral
It is the crystal which mineral … magma gets cold, and was made
When I observe a mineral with a both eyes substance microscope, I add water to volcanic ashes and observe it after washing it while pushing it with the stomach of the thumb.
Colorlessness mineral … white and water-clear crystal
- Cough ray … colorlessness – white, light pink
- I am broken in butterfly stone … colorlessness or white, irregularity.
The crystal which has a colored mineral … color
- クロウンモ … black. I come off thinly in the direction decided with a hexagon pillar.
- The pillar shape that has a long カクセン stone …
- The pillar shape that キ stone … has a short
- A quadrangle with the olivine … roundness. I am broken irregularly.
I may say that I pass through a property to be broken regularly and come, and there are open characteristics.
Classification of the igneous rock
It becomes like the next figure when I settle a classification of the igneous rock.
Mineral included in the igneous rock
As shown, a rhyolite and the granite have many colorless mineral ratios, but the basalt やはんれい rock has many colored mineral ratios.
So it becomes blackish as a rock on the right side of the list.