black/silver
An igneous rock's color is mainly determined by its silica content.
Silica in molten material tends to crystallise as quartz, which is white or mostly pale in colour. So felsic rocks (from silica-rich magma) tend to be pale, while mafic rocks (from silica-poor magma) tend to be dark in colour.
Granite is lighter in color and higher in silicate mineral content.
Silicate. It is silica, SiO2 with contaminants such as Fe3+ that give it color. technically it is a tectosilicate.
An igneous rock with a high level of silica will have a light color.
The more silica contained in a rock, the lighter in color it will be.
The silica gel colour is blue, and after capturing the moisture the colour is become a pink colour.
The more silica contained in a rock, the lighter in color it will be.
The more silica contained in a rock, the lighter in color it will be.
Generally, igneous rocks with more silica are lighter in color.
red or scarlet
brown
Silica is part of the rock forming group of minerals. Silica has a molecular weight of 28.09 gm and is iron black and reddish in color.
more silca means lighter color less silca means darker color.
black/silver
silica gel