Since 1850 the rate of global extinction has escalated to at least one animal every 2.15 years. They are not really extinct however, because they still survive elsewhere. A scientist who studies rocks, minerals and fossils. The texture of groups or masses of minerals is said to be granular when distinct crystal faces are absent and the individual grains are about equal in length, breadth and height. Grains of salt and sand are examples of granular minerals.
Granular texture is contrasted with crystalline texture.
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