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| | George Catlin and the Pipestone (Catlinite) Quarry |
 | | The surface of these boulders is in every part covered with a grey moss, which gives them an extremely ancient and venerable appearance, and their sides and angles are rounded by attrition, to the shape and character of most other erratic stones, which are found throughout the country. |
 | | The quartz is of a close grain, and exceedingly hard, eliciting the most brilliant spark from steel; and in most places, where exposed to the sun and the air, has a high polish on its surface, entirely beyond any results which could have been produced by diluvial action, being perfectly glazed as if by ignition. |
 | | I am strongly inclined to believe, however, that the former supposition is the correct one; and that the Pipe Stone, which differs from all known specimens of lava, is a new variety of steatite, and will be found to be a subject of great interest and one worthy of a careful analysis. |
| www.rocksandminerals.com /specimens/pipestonevisit.htm (868 words) |
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