Craft projects to make using ChalksChalk is a soft, white, porous sedimentary rock, a form of limestone composed of the mineral calcite. Calcite is calcium carbonate or CaCO₃. It forms under reasonably deep marine conditions from the gradual accumulation of minute calcite plates shed from micro-organisms called coccolithophores. It is common to find chert or flint nodules embedded in chalk. Chalk can also refer to other compound... From Wikipedia
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Tutorialrevamped t-shirts »
Do It Yourself! Diy Sports Jersey Inspired Tshirt Using Ribbons! No Sew!