How would you distinguish between rhyolite porphyry, andesite porphyry, and basalt porphyry

Basalt

    Formation -basalt is (mineral) a hard igneous rock of varied mineral   content formed when lava reaches the Earth's surface near an active volcano

    Texture-  is fine grained so the individual minerals are not visible

    Colour- basalt being dark

Rhyolite

      Formation -Rhyolite is a very fine-grained to glassy extrusive igneous rock. Formed in continental plates have  volcanic eruptions.

    Texture- very small than grains and are difficult to observe without using a hand lens.

    Colour- light in colour whether  pink or grey  

Andesite  

    Formation- Andesite is a fine-grained igneous rock that forms when the magma is rises up onto the surface and  crystallized quickly

    Texture- higher than basalt and lower than rhyolite  

    Colour -- color is pale due to silica content