Science / Geology / Granite: A coarse-grained, intrusive igneous rock composed primarily of light colored minerals such as quartz, orthoclase, sodium plagioclase and muscovite mica. Granite is thought to be one of the main components of continental crust. Picture of Granite.

Cesium (Cs)

Science / Periodic Table of Elements / Cesium (Cs): Atomic number: 55, Atomic mass: 132.9054 g.mol -1, Electronegativity: 0.7, Density: 1.9 at 20°C, Melting point: 28.4 °C, Boiling point: 669 °C, Vanderwaals radius: 0.267 nm, Ionic radius: 0. MORE


Life Style / Wine Grapes / Neuburger: Minor grape grown in Austria and recently (2002) determined to be a cross between the Roter Veltliner and Silvaner varieties. Suitable for growing in a wide range of soils including heavy or chalky ar MORE

Angle Plate

Business / Machine Shop / Angle Plate: A precision holding fixture made of cast iron, steel or granite. The two principal faces are at right angles and may be slotted for holding the work or clamping to a table. MORE


Science / Geology / Rhyolite: The fine-grained volcanic or extrusive rocks that are equivalent in composition to granite. Normally white, pink or gray in color. Picture of Rhyolite. MORE

Acidic Rock

Science / Geology / Acidic Rock: An igneous rock that has a relatively high silica content. Examples are granite and rhyolite. Also see entries for basic, intermediate and ultrabasic rocks. MORE


Science / Geology / Obsidian: A glassy igneous rock with a composition similar to granite. The glassy texture is a result of cooling so fast that mineral lattices were not developed. Picture of Obsidian. MORE