beryllium-feldspar
21Mohs scale of mineral hardness — The Mohs scale of mineral hardness characterizes the scratch resistance of various minerals through the ability of a harder material to scratch a softer material. It was created in 1812 by the German geologist and mineralogist Friedrich Mohs and… …
22Rubidium — krypton ← rubidium → strontium K ↑ Rb ↓ …
23List of chemistry topics — This page aims to list articles related to chemistry. This is so that those interested in the subject can monitor changes to the pages by clicking on Related Changes in the sidebar and on the bottom of the page.This list is not necessarily… …
24Phenakite — Phenacite or phenakite is a nesosilicate mineral consisting of beryllium orthosilicate, Be2SiO4. Occasionally used as a gemstone, phenacite occurs as isolated crystals, which are rhombohedral with parallel faced hemihedrism, and are either… …
25Jaipur — /juy poor/, n. 1. a former state in NW India, now part of Rajasthan. 2. a city in and the capital of Rajasthan, in NW India: known as the pink city because of its buildings of that color. 613,144. * * * Capital (pop., 2001 prelim.: 2,324,319) of… …
26high-pressure phenomena — ▪ physics Introduction changes in physical, chemical, and structural characteristics that matter undergoes when subjected to high pressure. pressure thus serves as a versatile tool in materials research, and it is especially important in… …
27pegmatite — noun A coarsely crystalline igneous or plutonic rock composed primarily of feldspar and quartz, normally with muscovite and/or biotite mica. Often contains other minerals, which may be of economic importance. Pegmatite is chemically identical to… …
28Mining in Argentina — is an important regional producer of minerals, including primary aluminum, lead, copper, zinc, silver and gold. In 2003 the value of nonfuel mineral production totaled $1.1 billion, of which copper concentrate alone accounted for $467 million.… …
29inorganic matter — (New American Roget s College Thesaurus) The inanimate world Nouns 1. inorganic matter, mineral, mineral world or kingdom, unorganized, inanimate, or lifeless matter, inorganization; lithification, petrification; petrifaction; brute matter; stone …
