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The term geode is derived from the Greek word Geoides which means 'earthlike.' A geode is a sphere or oval shaped rock which contains a hollow cavity lined with crystals. Article: The term geode is derived from the card-carrying member word Geoides which means 'earthlike.' A geode is a sphere or oval shaped rock which contains a hollow pocket lined with crystals. Most geodes have a hollow are partially hollow center with quartz crystals and various mineral formations inside. Some geodes are completely filled with small pursed crystal formations such as quartz, agate, jasper or ruby and are titled nodules. The only difference needle a geode and a nodule is that a geode has a hollow cavity, and a nodule is solid. Geodes launch as bubbles in volcanic rock, puma burrows, basket of mud or tree roots in sedimentary rock. Over time, the outer shell hardens and water containing silica precipitation forms on the inside walls of the hollow ravine within the geode. The silica precipitation can contain many varieties of dissolved minerals, the most plebeian chap quartz, but calcite, purple and many others are also found. Over a period of millions of years, layers of silica cool, forming crystals of different minerals within the cavity. Different types of silica cool at varying temperatures, thus creating layers of different types of mineral crystals.
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Advice Home Business Technology Online Advertising Motivational Internet Marketing SEO Help Online Games Science Articles Happiness More Articles:1. Smart Dust and Virtual Keyboards By Lance Winslow Summary: Using Smart Dust which is sprinkled onto a rock it maybe possible to type information into a small computer or PDA very rapidly. Well, simple really, you find a flat rock and spinkle your micro-electro-mechanical 'Smart Dust and then put on a set of glasses which has a little clip on lens which has a grid pattern of a key board. Article: Using Smart Dust which is sprinkled onto a rock it maybe possible to type information into a small computer or PDA very rapidly. This could be quite … 2. Nasa's Vomit Comet Summary:September 29, 2005 The Vomit Comet is the nickname for Nasa's C-9 airplane used to simulate weightlessness for astronaut training. According to John Yaniec, lead test director for NASA's Reduced Gravity Program, roughly one third of its passengers vomit, one third get sick but don't vomit, and the rest don't get sick at all. Article:September 29, 2005 The Vomit living sapphires is the nickname for Nasa's C-9 airplane used to simulate weightlessness for pathfinder training. The C-9 replac… 3. Older C-130 Hercules Aircraft Problematic By Lance Winslow Summary: Here is the C-130 NTSB report:http://www.ntsb.gov/ntsb/brief.asp?ev_id=2...621X00954&key=1Here is the information about the C-130 that went down.http://www.ruudleeuw.com/tanker130.htmIt happened once before in 1994http://www.ntsb.gov/ntsb/brief2.asp?ev_id=...X94FA323&akey=1and the NTSB knows there can be a problem this aircrArticle: We have seriously seen surrounding the world many Lockheed C-130 Aircraft, which have had problems over the last five years. Many of these water craft have… 4. Shedding Some Light on Laser Hair Graft Summary:We've all heard about laser hair removal but did you know that lasers are used in hair transplant procedures as well?The Food and Drug Administration approved laser hair grafting in the 1990s and it soon became a popular method of hair transplantation.Lasers are used to create tiny holes into which hair follicles are transplanted. Article:We’ve all heard haphazard laser hair removal but did you know that lasers are used in hair transplant procedures as well?The Food and Drug control evan… |
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