32 GEOLOGICAL REPORT. [157, 58 



occur, 1 shall not attempt to specify many localities, but will only 

 mention a few which are remarkable for being capable of furnishing 

 large blocks of good quality, or regions in which the rock is 

 unusually abundant. 



57. Ou Tippah Creek, S. 7 T. 1 R. 2 E., Tippah county, near 

 the crossing of the Hickory Flat and Salem road. Solid ledges 

 10 to 12 feet in thickness, and of considerable extent. — On the heads 

 of Platchie, Tallahatchie and Tombigbee, in T. R. 4 E., Tippah 

 county, on and near the Ripley and Fulton roads. In the sandy 

 Pine Hills bordering on the E. Hatchie generally, the ferruginous 

 sandstone is very abundant. — So also, on the high ridges in S. E. 

 Itawamba, especially S. of Bull Mountain. — In S. E. Marshall and 

 S. E. Lafayette ccunties — A heavy solid ledge occurs, on a level 

 hilltop, a few miles W. of Water Valley, Yallabusha county. — 

 Another, of considerable thickness and extent, on SS 29 and 30 

 T. 12 R. 2 W., Calhoun county, near Mr. Collins' place. The 

 hills on the Otuckalofa, in N. Calhoun and N. E. Yallabusha, 

 generally abound in this rock, so also do the high ridges of E. 

 Carroll, N. Attala, and some portions of W. Choctaw. 



Usually the rock is hard and requires to be worked with the hammer and 

 chisel ; in some instances, however, we find it sufficiently soft to be cut into 

 shape with an axe without dulling the same. Several small deposits of this 

 kind exist near the heads of Potlockney and Otuckalofa Creeks ; one on S. 16 T. 

 10 R. 2 W., Lafayette county. The cement here is somewhat aluminous, and 

 small particles of white clay, which cause white streaks on a cut surface, are 

 imbedded with the sand grains. The rock stands the weather well, and chimneys 

 have been built of it. It is of a pale brown color inside, but where lichens have 

 grown on the outside, it is red, sometimes to the depth of 3^ of an inch. 



58. The white siliceous sandstone of the Orange Sand formation 

 (115) sometimes occurs in deposits sufficiently large to render it of 

 importance. The chief localities of occurrence with which I am 

 acqain.ed, are the following : 



In Tippah county, on S. 35 Jand 36, T. 4, R. 1 E., there is a 

 considerable deposit, where large blocks can be obtained (1 15) ; 

 the rock is a very hard — a translucent chert rather than a sand- 

 stone, and from its resemblance to the Arkansas whetstone, it has 

 been attempted to use it for the same purpose, which it answers 

 tolerably well. A similar deposit, covering a few acres, exists on 

 S. 19, T. 5, R. 2 E., near Mr. Milton Smith's ; and another, quite 

 small, on S. 1, T. 5, R. 1 E. Isolated blocks of it are frequently 



