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Glassy near transparent prismatic crystals of barite to 1.5 cm in length over the top of this 8.0 x 6.5 x 2.0 cm dolomite crystal covered matrix. Minimal chipping present as seen. Shipping weight: 0.24 pounds. Ex Jordi Povill collection.
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Outline of mining Wikipedia The following outline is provided as an overview of and topical guide to mining:The hammer and pick,two basic tools traditionally used in mining for breaking rock,together form a main heraldic symbol of