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<p>Book digitized by Google and uploaded to the Internet Archive by user tpb.
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<br>Subjects: occurs; external; oxide; chemical; lustre; variety; iron; crystals; species; fracture; occurs massive; cleavage parallel; red oxide; scratches glass; blow pipe; distinctive characters; fracture conchoidal; rhombic prism; chemical characters; carbonic acid</div>
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John Lee Comstock</div>
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