Granite: nm Granite is an igneous rock with a grainy structure, that is to say entirely crystallized. It was formed for the slow deep cooling of a magma resulting from the partial melting of the continental crust. Granite is made up of mineral grains (crystals): quartz, micas, feldspars, etc. This soil is ideal for vines. It is found in particular in the great wines of the Rhone Valley and Beaujolais....
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