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Why are olivine crystals sometimes found in basaltic rock even though olivine is more dense than the basaltic lava that hardens?
Magma moves, it erupts out of volcanoes, and this can cause substances of different density to mix together. If these substances remained liquid, they would eventually settle out into layers by density, but if the rock hardens before this happens, then you have permanent mixing.
What else can I help you with?
What is in a shield volcanoes magma?
inside a shield volcano is a hot surface of mamga
What practice are used to extract olivine?
Olivine is typically extracted from rocks through mining methods such as open-pit or underground mining. The mineral is then crushed and processed to separate and concentrate the olivine crystals. Chemical methods may also be used to further purify and extract olivine from the ore.
What are types of rocks and minerals found in the island of Hawaii?
Hawaii is formed primarily of basaltic rocks, including basalt and other volcanic rocks. Minerals commonly found in these rocks include olivine, feldspar, and pyroxene. The unique geology of Hawaii also gives rise to minerals such as peridot, a gemstone found in basaltic lava rocks.
What rock would form when basaltic magma cools?
When basaltic magma cools, it typically forms basalt rock. Basalt is a fine-grained, dark-colored volcanic rock rich in iron and magnesium minerals. It often contains characteristic minerals such as pyroxene, plagioclase feldspar, and olivine.
How do minerals form from solution how do they form from magma?
Minerals form as hot magma cools inside the crust, or as lava hardens on the surface. When these liquids cool to a solid state, they form crystals. When elements and compounds that are dissolved in water leave a solution, crystallization occurs.
What is the first mineral to crystalize out of a hot basaltic magma?
Olivine
What is in a shield volcanoes magma?
inside a shield volcano is a hot surface of mamga
Does gabbro have crystals?
Yes, gabbro is a coarse-grained igneous rock made up of larger crystals visible to the naked eye. These crystals are usually a combination of minerals such as plagioclase feldspar, pyroxene, and sometimes olivine.
What is a pallasite?
A pallasite is a stony-iron meteorite embedded with glassy crystals of olivine.
Basaltic magma would form what color of igneous rocks?
baslt
What practice are used to extract olivine?
Olivine is typically extracted from rocks through mining methods such as open-pit or underground mining. The mineral is then crushed and processed to separate and concentrate the olivine crystals. Chemical methods may also be used to further purify and extract olivine from the ore.
How does Dunite form?
Dunite is an igneous rock composed primarily of olivine. It forms when magma solidifies deep within the Earth's mantle and contains a high percentage of olivine crystals. As the magma cools and crystallizes, olivine-rich dunite can be formed.
Does olivine rock form to become soil?
Sand is formed from the breakdown of rocks. If a rock contains large amounts of olivine, then when this rock weathers, olivine sand will be formed. There are beaches in New Zealand that are almost exclusively made of green olivine crystals.
What are types of rocks and minerals found in the island of Hawaii?
Hawaii is formed primarily of basaltic rocks, including basalt and other volcanic rocks. Minerals commonly found in these rocks include olivine, feldspar, and pyroxene. The unique geology of Hawaii also gives rise to minerals such as peridot, a gemstone found in basaltic lava rocks.
Why are granitic igneous rocks lighter in color than basaltic rocks?
Granitic igneous rocks are lighter in color than basaltic rocks because they contain more quartz and feldspar minerals, which are typically light in color. Basaltic rocks, on the other hand, contain more dark-colored minerals like pyroxene and olivine, giving them a darker color.
How is basaltic lava different from granitic lava?
Basaltic lava is far less viscous, has less silica, erupts at a higher temperature and is denser than granitic lava (properly called rhyolitic lava when it is on the surface). Basaltic lava is composed primarily of pyroxenes and calcium rich plagioclase with small amounts of olivine. Rhyolitic lava primarily contains alkali feldspars and quartz.
What is the percentage of olivine in gabbro?
The percentage of olivine in gabbro is typically low, ranging from 0-10%. Olivine is not a common mineral in gabbroic rocks, which are primarily composed of pyroxene, plagioclase feldspar, and sometimes amphibole.
