Granite rock is light in color. which feature directly contributes to this color?
the process that forms granite
the amount of silica minerals in granite
the shape of the grains found in granite
the unique pattern formed by grains in granite

The granite is a plutonic igneous rock, this means it was formed from a deep slow cooling in large masses of magma.  

This rock is essentially composed of silica in high quantities, alumina, sodium and potassium oxides, quartz, alkali feldspar, plagioclase and mica.

There are granites of different colors, depending on their chemical composition, although they are generally clear due to their high amount of silica.

i would expect light rain in pittsburgh throughout the following 24 to 48 hours. the lower/falling weights in urban areas toward the west demonstrate that a low weight framework is moving from west to east toward pittsburgh. low weight frameworks are ordinarily connected with precipitation. the way that you don't see a major drop in temperature in the more western urban areas demonstrates the low weight framework is moving with a warm front, so just light rain would be normal. substantial downpours or progressively vicious climate is just typically connected with chilly fronts, where the warm air is pushed up and over a cool front quickly. this quickly rising air (convection) is what gives you heavier torrential downpours, and other conceivably serious weather conditions.