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
Granite City, Illinois granting tax incentives, and adding new zoning restrictions. The original design of what is currently downtown Granite City is based on the City of Washington D.C. West Granite is located west of downtown across the railroad lines. West Granite contains both industrial and lower income residential areas and has been struggling to fight its above average crime rate. While Wilson Park may be the Heart of Granite City, West Granite is the History. Attracted by the promise of plentiful jobs, many immigrants from Central-Eastern Europe, primarily Bulgaria, Macedonia and Hungary, migrated to the City in search of good jobs with