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What is the mineral of andesite?
plagioclase feldspar, pyroxene, horneblende (amphibole)
Which mineral can be found in granite andesite gneiss and hornfels?
The mineral found in granite, andesite, gneiss, and hornfels is feldspar. It is a common mineral in these rock types and can exist in different varieties such as orthoclase, plagioclase, or potassium feldspar.
Compare the mineral composition of diorite with the mineral composition of andesite?
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.
Which type of volcanic material appear grey or pink?
Andesite is a type of volcanic material that can appear grey or pink due to its mineral composition. Grey andesite contains a higher amount of mafic minerals like plagioclase and pyroxene, while pink andesite contains a greater proportion of felsic minerals like potassium feldspar.
Are diorite and andesite similar?
Diorite and andesite are both igneous rocks, but they have different mineral compositions and origins. Diorite is a coarse-grained rock composed mostly of plagioclase feldspar and hornblende, while andesite is a fine-grained rock with a mix of plagioclase feldspar and mafic minerals like amphibole or pyroxene. Andesite typically forms from intermediate magmas in volcanic settings, while diorite forms from the slow cooling of molten rock deep beneath the Earth's surface.
How do we use andesite rock?
Andesite rock is commonly used in construction as a decorative stone for landscaping, pathways, walls, and facades. It is also utilized as a component in the production of mineral wool insulation and as a soil amendment for gardening due to its ability to improve soil drainage. Additionally, andesite can be crushed and used as a base material in road construction and as an aggregate in concrete production.
What is the mineral composition of andesite?
basalt and dacite, and ranges from 57 to 63% silicon dioxide (SiO2)
Is andesite sandstone?
No. Andesite is a volcanic rock.
What is the streak of andesite?
dark gray, brown, greenish
How hard is andesite on the mohs hardness scale?
"Andesite" is a rock type not a mineral (it is made of a mixture of minerals). Mohs scale relates the hardness of individual MINERALS not ROCK TYPES and thus your question can not be answered.
How old is andesite?
Andesite is not any age in particular. Some deposites of andesite may be hundreds of millions of years old. However, since andesite is volcanic, some andesite rocks may only be minutes old.
Distinguish between andesite and diorite using two physical properties of igneous rocks?
Andesite typically has a light to dark gray color with a fine-grained texture, while diorite is usually darker in color with a coarse-grained texture. Additionally, andesite usually contains more silica than diorite, leading to differences in their mineral compositions and overall chemical makeup.
