The shiny piece found in a rock when it cools could be a mineral like pyrite or mica. These minerals often form in cooling molten rock and can appear shiny due to their crystal structure reflecting light.
I found a piece of igneous rock, which is formed from cooled and solidified magma. This rock typically has a crystalline structure and may contain minerals such as quartz, feldspar, and mica.
Emeralds are typically dark green and can have a shiny appearance. You can try scratching the rock against a piece of glass to see if it leaves a streak. In addition, you could take the rock to a jeweler or gemologist for a professional assessment.
Obsidian is an extrusive rock that cooled very rapidly without forming crystals. As a result, obsidian has a smooth, shiny texture of a thick piece of glass.
you would normally find igneous rock which is formed by cooled magma.
Basalt.
I found a piece of igneous rock, which is formed from cooled and solidified magma. This rock typically has a crystalline structure and may contain minerals such as quartz, feldspar, and mica.
Volcanic glass or obsidian is a quickly cooled igneous rock without a mineral crystal structure.
Emeralds are typically dark green and can have a shiny appearance. You can try scratching the rock against a piece of glass to see if it leaves a streak. In addition, you could take the rock to a jeweler or gemologist for a professional assessment.
Obsidian is an extrusive rock that cooled very rapidly without forming crystals. As a result, obsidian has a smooth, shiny texture of a thick piece of glass.
Serpentine, a shiny, green and blue rock found throughout California, was named the official State Rock in 1965.
you would normally find igneous rock which is formed by cooled magma.
A xenolith is a piece of rock having a different origin to that of the igneous rock in which it is found.
Basalt.
Yes. Cooled lava is extrusive igneous rock.
Basalt: a dark-colored, fine-grained rock that forms from rapidly cooled lava. Granite: a light-colored, coarse-grained rock that forms from slowly cooled magma deep within the Earth's crust. Obsidian: a shiny, black volcanic glass that forms from rapidly cooled lava without crystallization.
Igneous rock is formed from solidified and cooled magma or lava.
A cinder is a piece of molten rock that has been thrown out by an explosive eruption. You may still call these fragments cinders after they have cooled.