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Both andesite and diorite are igneous rocks with an intermediate color index. Diorite; however, is intrusive and phaneritic, whereas andesite is aphanitic and extrusive. Andesite is said to be the extrusive equivalent of diorite. Diorite is made up of plagioclase feldspar and ferromagnesian mineral crystals, mainly amphibole. Contrarily, andesite may resemble rhyolite, meaning it presents a need for microscopic examination to see its mineral crystals. The two have a composition of plagioclase feldspar and amphibole, but it is much more difficult to detect in andesite.

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Q: Compare the mineral composition of diorite with the mineral composition of andesite?
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Related questions

Coarse grained diorite is most similar in mineral composition to fine grained?

Diorite is the intrusive equivalent to the extrusive rock andesite.


Two rocks that have the same general chemical and mineral composition?

According to the New York State Earth Science Reference Tables, the two rocks that have the same general chemical and mineral compositions are igneous rocks called andesite and diorite. They both have a composition that consists of quartz, plagioclase feldspar, biotite, pyroxene, and amphibole.


What is the mineral composition of andesite?

basalt and dacite, and ranges from 57 to 63% silicon dioxide (SiO2)


Is andesite a mineral?

No. Andesite is an extrusive igneous rock.


What is the mineral of andesite?

plagioclase feldspar, pyroxene, horneblende (amphibole)


Which mineral can be found in granite andesite gneiss and hornfels?

biotite mica


What mineral composition?

Each known mineral has a specific chemical composition.


What are the properties of diorite?

First, diorite is an intrusive igneous rock, meaning it solidified from magma under the surface. This extra time spent underground cooling allowed it to have larger crystals than a rock formed from magma cooling above ground. Diorite is considered an intermediate rock, mostly composed of the mineral plagioclase feldspar, with biotite mica, hornblende, pyroxene, quartz, and olivine. Its mineralogy causes it to be fairly dark in color, ranging from gray to green in tone. Diorite rock is very durable, and ancient structures and artwork created with it still survive.


What property of a mineral is determined by its chemical composition?

The color of a mineral sample is determined by its chemical composition


What is the mineral composition of evaporite?

Several minerals are evaporites, and therefore, there is not just one mineral composition but a different one for each mineral.


What is the chemical composition of Andesite?

Andesite (pronounced /ˈændəsaɪt/) is an extrusive igneous, volcanic rock, of intermediate composition, with aphanitic to porphyritic texture. In a general sense, it is the intermediate type between basalt and dacite. The mineral assemblage is typically dominated by plagioclase plus pyroxene and/or hornblende. Magnetite, zircon, apatite, ilmenite, biotite, and garnet are common accessory minerals. Alkali feldspar may be present in minor amounts. The quartz-feldspar abundances in andesite and other volcanic rocks are illustrated in QAPF diagrams. Relative alkali and silica contents are illustrated in TAS diagrams. (Source wikipedia)


What is the mineral composition of marble?

the composition of luster is limstone