MINERALS AND SEDIMENTARY ROCKS

Jun 28th, 2015
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The mineral content of living creatures is one of the factors that makes a difference in what becomes fossilized and how the fossil holds up in the ground. It also makes a difference in preparation techniques. So we are starting this section off with a pre-life primer about minerals and rocks.

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MINERALS AND SEDIMENTARY ROCKSThe mineral content of living creatures is one of the factors that makes a difference in what becomes fossilized and how the fossil holds up in the ground. It also makes a difference in preparation techniques. So we are starting this section off with a pre-life primer about minerals and rocks. Rocks first: Generally igneous and metamorphic rocks do not contain fossils. They are almost always found in sedimentary rocks (limestone, shale, sandstone, and some clays). Therefore knowing about the properties and structures of sedimentary rocks will help you find likely fossil areas.Minerals--pre-life primer: Learn how minerals helps with identificationRock types: Shale, Sandstone, Limestone, Evaporites, Others Color Properties: Size, Sorting, Rounding Geology n booksInternet Explorer users can click to highlight paragraphs. Handy to mark place.Mineralspre-life primerFossilized hard parts may becalcareous - aragonitic - phosphatic - siliceous - chitinous So what? So what! you say. I thought that for a while. Here's part of the answer. calcareous - calcium is the most commonly found hard part material in critters. Calcareous materials hold up in the ground so calcareous fossils are found in all time periods. Vinegar and muratic acid, which are commonly used to clean rocks, eats calcium. Knowing that should tell you to be cautious with acid or your fossils may be destroyed. aragonitic - Shells of this material are l

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