framework silicate

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• Silicate minerals — The silicate minerals make up the largest and most important class of rock forming minerals, constituting approximately 90 percent of the crust of the Earth. They are classified based on the structure of their silicate group. Silicate minerals… …   Wikipedia

• Silicate — For the artificial intelligence androids of the 1990s science fiction series , see Silicate (AI) A silicate is a compound containing an anion in which one or more central silicon atoms are surrounded by electronegative ligands. This definition is …   Wikipedia

• Clastic rock — A thin section of a clast (sand grain), derived from a basalt score. Vesicles (air bubbles) can be seen throughout the clast. Plane light above, cross polarized light below. Scale box is 0.25 mm Clastic rocks are composed of fragments, or clasts …   Wikipedia

• Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry       The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …   Universalium

• Iddingsite — is an alteration of olivine that consists of a mixture of clay minerals, iron oxides and ferrihydrides. Iddingsite forms from the weathering of basalt in the presence of liquid water and can be described as a phenocryst meaning it has… …   Wikipedia

• Han Purple and Han Blue — Infobox Color|title=Han Purple|textcolor=white hex=5218FA r= 82|g= 24|b=250 c= |m= |y= |k= h= 260|s= 97|v= 47 source= [http://images.google.com/imgres?imgurl=http://www.spacedaily.com/images/microscopic han purple sm.jpg… …   Wikipedia

• Han purple and Han blue — (also called Chinese purple and Chinese blue) are synthetic barium copper silicate pigments that were developed in China at least 2,000 years ago. Han purple and Han blue were used in ancient and imperial China from the Western Zhou period (1207… …   Wikipedia

• Sedimentary rock — Middle Triassic marginal marine sequence of siltstones (below) and limestones (above), Virgin Formation, southwestern Utah, USA Sedimentary rock are types of rock that are formed by the deposition of material at the Earth s surface and within… …   Wikipedia

• Physical Sciences — ▪ 2009 Introduction Scientists discovered a new family of superconducting materials and obtained unique images of individual hydrogen atoms and of a multiple exoplanet system. Europe completed the Large Hadron Collider, and China and India took… …   Universalium

• Tugtupit — in Quarz vom Kuannersuit (Kvanefjeld) Plateau, Narsaq, Provinz Kitaa, Grönland Chemische Formel Na4[(Cl,S)|BeAlSi4O12] Mineralklasse Silicate und G …   Deutsch Wikipedia

• climate — /kluy mit/, n. 1. the composite or generally prevailing weather conditions of a region, as temperature, air pressure, humidity, precipitation, sunshine, cloudiness, and winds, throughout the year, averaged over a series of years. 2. a region or… …   Universalium