Editing Beryl (section)

==Deposits==
Beryl is a common mineral, and it is widely distributed in nature. It is found most commonly in [[granite|granitic]] [[pegmatite]]s, but also occurs in [[mica]] [[schist]]s, such as those of the [[Urals|Ural Mountains]], and in [[limestone]] in [[Colombia]].<ref name="Klein-1993">{{cite book |last1=Klein |first1=Cornelis |last2=Hurlbut | first2=Cornelius S. Jr. |title=Manual of Mineralogy (after James D. Dana) |date=1993 |publisher=Wiley |location=New York |isbn=0-471-57452-X |edition=21st |page=472}}</ref> It is less common in ordinary granite and is only infrequently found in [[nepheline syenite]]. Beryl is often associated with [[tin]] and [[tungsten]] ore bodies formed as high-temperature hydrothermal veins. In granitic pegmatites, beryl is found in association with [[quartz]], [[potassium feldspar]], [[albite]], [[muscovite]], [[biotite]], and [[tourmaline]]. Beryl is sometimes found in [[metasomatic]] contacts of igneous intrusions with [[gneiss]], schist, or [[carbonate rock]]s.<ref name="Nesse-2000">{{cite book |last1=Nesse |first1=William D. |title=Introduction to mineralogy |date=2000 |publisher=Oxford University Press |location=New York |isbn=978-0-19-510691-6 |page=301}}</ref> Common beryl, mined as beryllium ore, is found in small deposits in many countries, but the main producers are Russia, Brazil, and the United States.<ref name="Klein-1993"/>

[[New England]]'s [[pegmatites]] have produced some of the largest beryls found, including one massive crystal from the [[Bumpus Quarry]] in [[Albany, Maine]] with dimensions {{convert|5.5|by|1.2|m|ft|abbr=on}} with a mass of around {{convert|18|tonne|ST}}; it is New Hampshire's state mineral. {{As of|1999}}, the world's largest known naturally occurring crystal of any mineral is a crystal of beryl from Malakialina, Madagascar, {{convert|18|m|abbr=on}} long and {{convert|3.5|m|abbr=on}} in diameter, and weighing {{convert|380,000|kg|abbr=on}}.<ref>G. Cressey and I. F. Mercer, (1999) ''Crystals'', London, Natural History Museum, page 58</ref>