118 GOLD AND TIN DEPOSITS OF SOUTHERN APPALACHIANS. 
A little monazite has been found on the Perry place, near GafTney, and at several locali- 
ties in the northern part of York County. 
The occurrences of spodumenc, mentioned on page 48, may be worthy of investigation 
as a source of lithium or even as a possible locality for the spodumene gems — kunzite, 
hiddenite, triphane, etc. 
MICA. 
Although some prospecting has been done on pegmatite dikes northeast of Kings Moun- 
tain station and northwest of Blacksburg, mica has never been found in commercial quan- 
tities in this immediate region, although not far to the northwest the mica industry is one 
of importance. 
corundum. • * 
Corundum is known to occur in the vicinity of Nannies Mountain in York County, and 
has been reported from the Perry place, just west of GafTney. At two places near Nannies 
Mountain it has been mined. On the Barron property, southeast of the summit, a few 
shallow shafts have been sunk and some of the mineral obtained. The workings are now 
in such condition that they show nothing of the occurrence, and no rock is exposed near by. 
At the Clinton place, 1J miles northwest of Nannies Mountain, some pits and trenches 
and a 30-foot shaft constitute the development work. These also are caved in and grown 
over with grass, so that no good idea of geologic relations can be obtained. A few rods 
away a decomposed granitic rock cut by diabase is exposed. Some corundum is piled up 
near the pits and shows decomposition into muscovite. Some of the mineral occurs in 
masses a foot in diameter, with imperfect radial structure. It is said that several tons 
have been shipped from this place by Rickard & Hewitt, of Brooklyn, N. Y., who control 
both this and the xSarron property. Float is rather plentiful for some distance northeast 
of the Clinton place. 
LIMESTONE. 
Besides a fairly wide use as building stone in this region, the limestone of the Kings 
Mountain belt has been rather extensively quarried and burned to form lime. Quarries, 
now abandoned, have been made at Kings Mountain and at Blacksburg, and two quarries 
of good size (see PI. II, p. 18) are now being worked at GatFney, where a number of con- 
tinuous kilns with iron shells produce about 200 barrels of lime daily. The crystalline rock, 
almost white, is said to produce so low a grade of lime that but little of it is used, while 
the blue compact rock furnishes a lime of good quality. The crystalline variety is prob- 
ably rather dolomitic. (See analyses, p. 19.) 
]Sear Grover, N. C, clay from some beds of comparatively small extent is shipped to 
Richmond, Va., and is said to be used for pottery and as fire clay. A deposit occurring 6 
miles southeast of GafTney furnishes material for a small oven which produces rough pottery. 
