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Different Natural Rocks - Coggle Diagram
Different Natural Rocks
Igneous
Obsidian:흑요석
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for weapons, implements, tools, and ornaments and by the ancient Aztec and ancient Greek civilizations for mirrors
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Granite 화강암
How it's formed: Granite is formed when viscous (thick/ sticky) magma slowly cools and crystallises long before it is able to reach the Earth's surface.
Granite comes from granite quarries all over the world. As such, each type of granite takes on the visual characteristics of the minerals that are most prevalent in the ground in the region it’s taken from. It’s found in many countries around the world (besides Brazil and China), including India, Spain, Italy, and North America.
Basalt: 현무암
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Basalts are formed by the rapid cooling of basaltic lava, equivalent to gabbro-norite magma, from interior of the crust and exposed at or very close to the surface of Earth.
Iceland, the East African Rift Valley, the Red Sea and the Rio Grande Valley of New Mexico and Colorado.
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Sedimentary
Chalk:백악
Chalk forms from a fine-grained marine sediment known as ooze. When foraminifera, marine algae, or other organisms living on the bottom or in the waters above die, their remains sink to the bottom and accumulate as oozes
People are using chalk for make chalk gum eraser,Porte-crayons ,bread crumbs.
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Such deposits occur in western Europe south of Sweden and in England, notably in the chalk cliffs of Dover along the English Channel. Other extensive deposits occur in the United States from South Dakota south to Texas and eastward to Alabama.
Chalk used as a filler used in the production of paints and emulsions. Chalk as a source of calcium carbonate is widely used mineral in paper industry, it is valued worldwide for its high brightness and light scattering characteristics, and is used as an inexpensive
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Limestone:석화석
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when water containing particles of calcium carbonate evaporate, leaving behind the sediment deposit.
We can find in Marine Waters, Caves.
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Metamorphic
Marble 대리석
How marble is formed? When a pre-existing limestone rock is heated to such extreme temperatures that the minerals grow larger and fused together.
Where you can found? Marble can be found in all over the world,but the four contries where it is most prevalent are Italy,Spain,India,China.The most prestigeos famous white marble comes from Carrara,Italy.
How people use them? Marbles are used pincipally building and monuments,interior,decoration,statuary,table tops,and novelties.
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Quartzite 규암
Quartzite is a metamorphic rock the forms when sedimentary sandstone is heated and pressurized during the building of mountains.
In the southern Korean Peninsula twelve quartzite strata occur in the Gyeonggi massif and Okcheon belt.
to cover walls, as roofing tiles, as flooring, and stairsteps
Slate 점판암
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Slate is formed by a metamorphosis of clay, shale and volcanic ash that results to a fine-grained foliated rock, resulting in unique slate textures.
Slate has many uses such as snooker tables, roofing, gravestones, flooring and garden decorations.
