1914-] Certain Mineral Resources 111 



in the vicinity of Gaffney, South Carolina; and (2) those as- 

 sociated with the schists, which are of a later period, and with 

 wlhich most of the ISTorth Carolina tin is found. The ore at 

 the Jones mine, 7 miles northeast of King's Mountain, is in 

 gTeisen veins that occur in a gneissic rock, which may be a 

 portion of the Archean gneisses to the west. 



As has been stated above, the m^ain country rocks are for the 

 most part crystalline schists and gneisses, the former being 

 micaceous, chloritic and argillaceous, and the latter micaceous 

 and hornblendic. The strike of the schistosity of these rocks is 

 usually in a general northeast direction and they dip for the 

 most part at very steep angles to the westward. The veins in 

 the gneisses are dipping toward the east at very steep angles. 



The King's Mountain region of JSTorth Carolina is geo- 

 logically situated in a band of metamorphic rocks composed of 

 slates, schists, limestones, quartzites and conglomerates whose 

 age up to the present time has not been definitely determined. 

 The width of this belt near King's Mountain is about 10 miles 

 and extends in a direction about IST. 10° to 20° E. Just east 

 of Lincolnton, Lincoln Coimty, it joins another band of simi- 

 lar rock, the two being separated east of King's Mountain by 

 a mass of gTanite. To the west of these metamorphic rocks are 

 the Archean gneisses, with which the tin veins of Gaffney, 

 South Carolina, are associated. The strata of the&e metamor- 

 phic rocks are tilted at very high angles to nearly vertical, and 

 in the resultant alteration and erosion to which they have 

 been subjected, the quartzites have resisted these influences 

 the most, so that they now form the top of the peaks and ridges 

 such as King's, Crowders and Anderson mountains, which rise 

 500 to 1,000 feet above the average elevation. It is undoubted- 

 ly the mass of gTanite which is to the east that has tilted these 

 metamiorphic rocks and thrown them into their present position. 



There are a number of amphibole dikes that have been ob- 

 served cutting these metamorphic rocks, but they have made 

 very little change in the position of the schists through which 

 they penetrated beyond a metamorphic action. These sedimen- 

 tary rocks were tilted into their present position before the in- 

 trusion of these dikes, which are following partly the lamina- 



