. First[-fourth] annual report of the Geological survey of Texas, 1889[-1892] Edwin T. Dumble, state geologist. y of iron pebbles and iron gravel, a portion ofwhich was magnetic and separated by the magnet. Similar pebbles andgravel were observed at Patroon Postoffice in the southeastern part of thecounty. Crossing Iron Mountain, on the road from Patroon to San Augustine, theconglomerate iron ore seems to have been disintegrated and removed. Theiron sandstone, much broken, remains. Some of it has a little laminatediron ore adhering to it, and some of a lower horizon shows a tendency togeodifor
. First[-fourth] annual report of the Geological survey of Texas, 1889[-1892] Edwin T. Dumble, state geologist. y of iron pebbles and iron gravel, a portion ofwhich was magnetic and separated by the magnet. Similar pebbles andgravel were observed at Patroon Postoffice in the southeastern part of thecounty. Crossing Iron Mountain, on the road from Patroon to San Augustine, theconglomerate iron ore seems to have been disintegrated and removed. Theiron sandstone, much broken, remains. Some of it has a little laminatediron ore adhering to it, and some of a lower horizon shows a tendency togeodiform structure. On the road from San Augustine to Center the iron pebbles were seen inabundance, associated with a very deep red clay soil. About three and one-half miles north of San Augustine a small quantity of iron conglomeratewas seen. The best iron ore seen in Shelby County was in the extreme northwestern SHELBY COUNTY. 249 portion of the county, about four or five miles north of Timpson. Near theBettie A. Allen tract is a ridge capped with the iron ore deposit, from whichthe following section was made:. Fig. 18. SECTION OF IRON ORE DEPOSIT FOUR MILES NORTH OF TIMPSON. A. Soil sand with timber growth 6 feet. B. Iron sandstone 6 inches. C. Laminated iron ore 6 inches. D. Buff crumbly iron ore ... 3 feet. E. Geode iron ore Variable. F. Fragmental bowlders from No. 1, on hillside. G. Sandy clay to base of hill. CHEMICAL ANALYSES OF IRON ORES. No. Sesquioxide fimof iron. blllca- Alumina. Phosphoricacid. Water. Metalliciron. 665f 666f 667* 669* « * l Trace. 832* 833* Trace. * b Trace. 834* 835* 836* a & Trace. 837* • Analyses by fL. E. Magnenat, *J. H. Lime and sulphur, h Lime and magnesia. No.
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