Why Is The Texture Of Rhyolite Different From Granite

As nouns the difference between granite and rhyolite is that granite is rock a group of igneous and plutonic rocks composed primarily of feldspar and quartz usually contains one or more dark minerals which may be mica pyroxene or amphibole granite is quarried for building stone road gravel decorative stone and tombstones common colors are gray white pink and yellow brown while rhyolite is geology an igneous volcanic extrusive rock of felsic composition with aphanitic to.

Why is the texture of rhyolite different from granite. Rhyolite is an igneous volcanic rock of felsic composition. The mineral assemblage is usually quartz sanidine and plagioclase. Rhyolite has a similar composition and appearance to granite. Rhyolite rocks bear a striking resemblance to granite due to being classified as felsic rocks except that rhyolite has a fine grained texture with phenocrysts which are small crystals sometimes embedded within the rock.

There is distinct porphyritic texture characterized by sanidine and rare quartz plagioclase and biotite. Rhyolite is extrusive equivalent of granite magma. 5 2 composition 5 2 1 mineral content. Rhyolite an intrusive rock cools more quickly than granite so it has smaller crystals.

Granite is coarse grained with large crystals and its an intrusive igneous rock while rhyolite is fine grained with tiny crystals and is an extrusive igneous rock. The minerals that make up the composition of this rock are mica feldspar quartz and hornblende. It may have any texture from glassy to aphanitic to porphyritic. The difference is that granite sits on the plutonic diagram and rhyolite sits on the volcanic diagram.

Granite is plutonic and rhyolite is volcanic. So they have a similar composition but one is volcanic and the other is plutonic. It is the extrusive equivalent to granite. Granite is an intrusive igneous rock which is very hard crystalline and is visibly homogeneous in texture and forms by melting of continental rocks rhyolite is a felsic extrusive rock and due to its high silica content rhyolite lava is very viscous and is volcanic equivalent of granite.

Biotite and hornblende are common accessory minerals. Is rhyolite mafic rock. They have very similar compositions but one is erupted onto earth s surface and the other crystallises at depth. Rhyolite an extrusive rock cools more slowly than granite so it has larger crystals.

Rhyolite an intrusive rock cools more slowly than granite so it has larger crystals. It is composed predominantly of quartz k feldspar and biotite. Rhyolite is found all over the planet but it is uncommon on islands located far from large land masses.