The specimen above is a typical granite.
Can granite be black.
Agatha black granite sometimes known as agata granite is quarried from brazil and has a distinct pattern.
The black grains can be biotite or hornblende.
A jet black background gives way to white and gray striations.
That said you ll want to personally inspect your slab before you buy as there can be a high amount of variation in pattern.
It is about two inches across.
Numerous other minerals can be present in granite.
Most commonly black granite is in fact gabbro a mafic intrusive igneous rock similar to basalt.
Even a completely sealed granite countertop can stain if a spill is left to sit for long enough.
As said above granite must be at least 20 quartz which means an all black rock is not a granite.
The pink grains are orthoclase feldspar and the clear to smoky grains are quartz or muscovite.
This stone is dark in color and the stone is not very porous.
Next we will explore absolute black granite.
And of course more lightly colored granite is more likely to show stains than darker colors so if you have a white or other pale colored granite countertop it s important to be extra vigilant.
After 2 hours the stone still looks good.
Granite in specific is one of the most popular stones used in home remodeling projects.
As you can see in the photos the oil that sat on the absolute granite for 10 minutes was wiped up without leaving behind a stain.