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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. Chemical Element Silver By Ryan Fyfe Summary: Copper has replaced silver in several instances due to it's hire cost, this is especially true for electrical purposes.Silver has a number of other notable characteristics:- Silver has the whitest color of any metal - Silver has the highest thermal conductivity of any metal - Silver has the lowest contact resistance of any metal - Silver haArticle: Silver, a non-acid element, exists in the periodic table with the symbol "Ag" and solitary number 47. Silver is a soft white lustrous trans… 2. Stem Cells (The Truth) By Stephen Ayers Summary: When a stem cell divides, each new cell has the potential to either remain a stem cell or become another type of cell with a more specialized function, such as a muscle cell or a red blood cell. Thus a stem cell can become a neuron, a liver cell, a brain cell, a fingernail cell, or any other cell that needs to be replaced or repaired.Because recent progressArticle: The much publicized stem cell research debate focusing on moral arguments is off target with the goal of real progress i… 3. Immortality : My ultimate aim Summary: For example, if an organism lives or it has a life by exchanging energy with stale or nonliving organism, we can very well say that the environment lives but not the organism. They take energy from the environment, use it thus converting the free energy into unusable energy which is what environment wants. To become immortal, an organism needs to do one of the following: * Fool environment into thinking that it has evolved* Constantly changing the environment (from carbon to silicon to … 4. Diamond Flashes By Laura Ciocan Summary: Here are some interesting off-stage events in the diamond industry and innovations in technology.De Beers sued by head of the Diamond BourseDerek Parsons, the president of the Diamond Bourse of the Southeast United States has filed a lawsuit against De Beers, on the charge of the company's disregard of American competition law. That is why the offered Article: Beyond magnificence and splendor, the world of diamonds evolves on stirred grounds. When the stake is so important, interests c… |
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