Granite Granite Granite () is a common type of felsic intrusive igneous rock that is granular and phaneritic in texture. Granites can be predominantly white, pink, or gray in color, depending on their mineralogy. The word "granite" comes from the Latin "granum", a grain, in reference to the coarse-grained structure of such a holocrystalline rock. Strictly speaking, granite is an igneous rock with between 20% and 60% quartz by volume, and at least 35% of the total feldspar consisting of alkali feldspar, although commonly the term "granite" is used to refer to a wider range of coarse-grained igneous rocks containing quartz
Forbach Granite Forbach Granite Forbach Granite (), also called Raumünzach-Granite ("Raumünzach-Granit"), is a type of granite rock that occurs in the Northern Black Forest. It is part of the Northern Black Forest's granitic massif, to which Bühlertal granite and Wildbad granite also belong. Forbach granite predominantly outcrops in the counties of Calw and Rastatt. The most important quarrying area for Forbach granite used to be the middle Murg valley near Forbach. Today it is only quarried near Raumünzach. Forbach Granite is about 305 million years old. The stone is coarse-grained - this points to a slowly cooling of the lava / magma