Granite and feldspar. The term "granitic" means granite-like and is applied to granite and a group of intrusive igneous rocks with similar textures and slight variations in composition and origin. These rocks mainly consist of feldspar, quartz, mica, and amphibole minerals, which form an interlocking, somewhat equigranular matrix of feldspar and quartz with scattered darker biotite mica and amphibole (often hornblende) peppering the lighter color minerals. Occasionally some individual crystals (phenocrysts) are larger than the groundmass, in which case the texture is known as porphyritic. A granitic rock with a porphyritic texture is known as a granite porphyry. Granitoid is a
Rock of Ages Corporation natural stone producer, announced the acquisition of Swenson Granite and Rock of Ages Corporation to become the largest producer of marble and granite in North America. This also includes the Canadian division of Rock of Ages Corporation, located in Stanstead, Quebec, along the Vermont and Quebec border. ROAC maintains the world's largest "deep hole" granite quarry. The quarry is called the "E. L. Smith Quarry", and the Devonian Barre Granite is mined there. Granite was originally quarried using primitive techniques which implemented hand saws and explosive charges to blast away the "benches" of the quarry. Modern techniques have evolved to