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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.

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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.


What is the Hardness of Andesitic on the Mohs scale of hardness?

Andesite typically has a hardness of around 5-6 on the Mohs scale of hardness. This places it in the same range as materials like glass and orthoclase feldspar.


What is the color of a Andesite rock?

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


What kind of rock andesite?

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'.


Identify three minerals that are normally found with quartz in samples of andesite rock?

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.