Want this question answered?
Granite has a heterogeneous grain pattern or texture.
Grain
It doesn't. The grain size effects the texture. If a rock has a small grain size, it will have a smooth texture. If the grain size is large, such as pebbles, the texture will be rough. For example, siltstone is one of the smoothest rocks because it contains silt particles, which are .0004cm to .006cm. Conglomerate though contains various particles including cobbles and boulders, which are from 10cm to 100cm.
Grain size and arrangement.
Yes simple as that.
Yes, granite's grain shape is jagged.
jagged
Course grained/ Jagged/
fined grain texture
Granite has a heterogeneous grain pattern or texture.
Fine grain, rough and soft
Grain
Grain
Grain
It doesn't. The grain size effects the texture. If a rock has a small grain size, it will have a smooth texture. If the grain size is large, such as pebbles, the texture will be rough. For example, siltstone is one of the smoothest rocks because it contains silt particles, which are .0004cm to .006cm. Conglomerate though contains various particles including cobbles and boulders, which are from 10cm to 100cm.
Grain shape.
Pure obsidian actually has a glassy texture (grain), with no discernible crystalline structure.