File:Figure 35. .png
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Field sketches of igneous dikes in the Springfield (No. 5) Coal in underground mines of Saline County, showing how coal is coked, altered, and silicified near dikes.
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current | 15:09, February 16, 2024 | 1,230 × 863 (163 KB) | Samantha.Hager (talk | contribs) |
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