No. Andesite is classed as an 'intermediate' rock, being halfway in composition between a mafic and felsic rock. Mafic rocks are those that contain alot of ferromagnesian minerals (iron and magnesium) which give mafic rocks their dark colouring. Typical ferromagnesian minerals include olivine and pyroxene. Typical mafic rocks are basalt and gabbro. Felsic rocks, on the other hand, are low in magnesium and iron and are usually light in colour, such as granite and rhyolite. Andesite therefore typically contains a mixture of both felsic and mafic minerals and is classed as 'intermediate'.
Andesite rock typically has a hardness of around 7 on the Mohs scale, which means it is relatively hard and durable. It is commonly used in construction and landscaping due to its strength and resistance to wear and erosion.
The dominant color of the andesite is black with some spots of red and gray. from: http://192.211.16.13/curricular/MN/tieton_andesite.htm
Three minerals commonly found with quartz in andesite rock are feldspar (specifically plagioclase), biotite mica, and amphibole (such as hornblende). These minerals are all typically present in andesite as part of the overall composition of the rock.
Dacite is an extrusive rock that has a composition similar to andesite. Both rocks are rich in silica and belong to the intermediate composition category. They form from the volcanic eruption of magma that is intermediate in composition between felsic and mafic.
Andesite is a type of igneous rock that is typically light to dark gray in color. It forms when magma from the Earth's mantle solidifies and cools relatively quickly. Andesite is commonly found in volcanic regions such as the Andes Mountains in South America.
No. Andesite is a volcanic rock.
No. Andesite is an extrusive igneous rock.
The texture of Andesite rock is fine-grained and it Extrusive plus it is an igneous rock .
Yes. Andesite is an extrusive igneous rock.
The composition of the rock will determine whether it is a rhyolite or an andesite.
Yes. Andesite is the extrusive equivalent of diorite
Andesite is classified as an extrusive rock and the name of this rock is South American in origin. However, the hardness of this rock is not listed.
Andesite is a volcanic rock.
No. Foliation is a term that applies to metamorphic rocks. Andesite is igneous.
Yes
no it is a type of rock
Andesite is a volcanic rock.