The texture of an igneous rock refers to the size of its mineral crystals. If the common magma of both igneous rocks has experienced differences in cooling rates due to depth, they will have different textures. Slow cooling produces large crystals, and quick cooling produces small crystals. Granite and rhyolite are two igneous rocks sharing the same mineral composition, but having undergone different rates of magma cooling due to depth at solidification.
It is possible for them to have a similar texture but if the composition similar they are the same type of igneous rock by definition.
Rock from the same origin. Or rocks having the same parent material\mineral. For example, granite and rhyolite.
Texture or crystal size.
Andesitic igneous rock.
The color will depend on the mineral composition of the magma.
And their texture, which can be aphanitic, phaneritic, glassy, or porphyritic. mineral composition and crystal texture
Both rocks are igneous rock but basalt is an aphanitic igneous rock while granite is a common type of felsic intrusive igneous rock.
This is as a result of difference in the rate of cooling of the Igneous rocks.
Texture or crystal size.
Igneous rocks are classified by either being intrusive or extrusive, then mafic or felsic then they are classified by either fine grain or course grained textures.
Andesitic igneous rock.
The color will depend on the mineral composition of the magma.
And their texture, which can be aphanitic, phaneritic, glassy, or porphyritic. mineral composition and crystal texture
Both rocks are igneous rock but basalt is an aphanitic igneous rock while granite is a common type of felsic intrusive igneous rock.
felsic and something else i do not remember the second one.
The different colours are from different minerals. A reddish colour could be due to a mineral containing a lot of iron, for example. Weathering, staining, mineralogy and method of formation all play a part.
color texture and mineral composition
Porphryitic igneous rock is composed of phenocrysts embedded in a finer matrix.
Look at them. There shape, size, color and feel! Dont worry you will figure it out....