Cave of the Crystals Mexico Tourist Information
Cave of the Crystals or Giant Crystal Cave (Spanish Cueva de los Cristales) is a cave connected to the Naica Mine 300 metres (980 ft) below the surface in Naica Chihuahua Mexico The main chamber contains giant selenite crystals (gypsum CaSO42 H2O) some of the largest natural crystals ever found
Mineral resources The term "mineral resources" denotes the aggregate of useful minerals found in a state a continent or the whole world Mineral resources serve as the basis for the development of major industrial sectors including power engineering ferrous and nonferrous metallurgy the chemical industry and construction
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Natural gas is a fossil fuel Like other fossil fuels such as coal and oil natural gas forms from the plants animals and microorganisms that lived millions of years ago There are several different theories to explain how fossil fuels are formed The most prevalent theory is that they form underground under intense conditions
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New target 20% of women in senior and executive management (Lafarge hay grades 18+) by 2012 2008 Cement 70% AC 55% Gypsum €1 1 billion 12 2% The population in senior management in Lafarge is far too low and therefore we set the target of doubling the percentage of women in senior management between 2003 and 2008 with a target
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22 RED SEA EVAPORITES A PETROGRAPHIC AND GEOCHEMICAL STUDY Peter Stoffers Laboratorium fr Sedimentforschung Universitt Heidelberg Germany and Robert Kuhn Kali-Forschungs-Institut der Kali u Salz A G Hannover Germany INTRODUCTION One of the major shipboard findings during Leg 23 drilling in the Red Sea was the presence of late Miocene
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Harras of Eastern Saudi Arabia 3)Calderas - Large depression in volcanic regions that result where eruption spews forth large quantities of material creating an empty space in the underlying magma chamber This results in inward collapse of the upper part forming the caldera
