514 GEOLOGY OF NORTHWESTERN TEXAS. 



v 



JACKSON MINE. 



At this place a tunnel has been driven into the hill from the east side for 

 about seventy five feet. The coal seam is about twenty-five to twenty-seven 

 inches thick, and appears to be of an excellent quality. Above the coal the 

 hill rises to the height of one hundred feet. Near the top of the hill is a 

 thin seam of coal, only three inches thick. The Jackson mine will no doubt 

 be worked when there shall be transportation for the coal. The roofing is 

 good, and the hills are high in the direction of the dip. The following sec- 

 tion was made at this place. Beginning at the top: 



1 . Conglomerate 20 feet. 



2. Sandstone, irregular bedded 10 feet. 



3. Sandstone and clays 50 feet. 



4. Shaly sandstone, in layers of one to two inches 5 feet. 



5. Blue clay and slate 51 feet. 



6. Coal 2 feet 3 inches. 



T. Fire clay 1 foot. 



Total 145 feet 3 inches. 



ANTELOPE. 



In and about Antelope, in the northwest corner of Jack County, coal is 

 found in all the wells at a depth of from fifty to sixty feet. The coal is re- 

 ported to be from eight to eighteen inches thick. 



About three miles southwest of Antelope, on the south side of the West 

 Fork of Trinity River, I made the following section. Beginning at the bot- 

 tom: 



1. White sandstone 4 feet. 



2. Fire clay 1 foot 6 inches. 



3. Bituminous shale, with thin seams of coal 1 foot 2 inches. 



4. Bluish clay, with clay ironstone '. 8 feet. 



5. Brown sandstone 3 feet. 



6. Reddish clay 10 feet. 



1. Sandstone 2 feet. 



Total 29 feet 8 inches. 



At this place in the clay ironstone we found a great many impressions of 

 coal plants. 



At Antelope is the farthest place in the northwest where coal has been 

 found in digging wells. It is only a few miles in that direction to the line of 

 contact between the Coal Measures and the Permian. 



