1) Fine-grained granite 2) Igneous rock 3) Light-colored granite 4) Plutonic rock 
Aplite t in petrology, the name given to intrusive rock in which quartz and feldspar are the dominant minerals. Aplites are usually very fine-grained, white, grey or pinkish, and their constituents are visible only with the help of a magnifying lens. Dykes and threads of aplite are commonly observed traversing granitic bodies; they occur also, tho...
any intrusive igneous rock of simple composition, such as granite composed only of alkali feldspar, muscovite mica, and quartz; in a more restricted ...
[n] - light-colored and fine-grained granitic rock consisting chiefly of quartz and feldspars
noun light-colored and fine-grained granitic rock consisting chiefly of quartz and feldspars
a fine-grained granite composed essentially of feldspar and quartz.