. Economic Papers. of Wolf Creekabout a quarter of a mile above the Wolf Mountain road. It was worked fy^n-,°Pln^Ut ab<2£ 50 feet long and an °Pen incline st°pe 20 feet deepert«?*JSJbottom The country rock is mica gneiss with a layer of grittytalc schist a few feet southeast of the pegmatite. The latter is conformablewith the inclosing gneiss and strikes N. 70° E. with a dip of 50° N. The vein?wil £ ?iCa n?ar,the surface for the whole length opened, but was suf- r fno 7 riCV°KWOrk f°r a length of 8 feet only near the bottom of the in-cline. At the bottom of the incline the pay streak became
. Economic Papers. of Wolf Creekabout a quarter of a mile above the Wolf Mountain road. It was worked fy^n-,°Pln^Ut ab<2£ 50 feet long and an °Pen incline st°pe 20 feet deepert«?*JSJbottom The country rock is mica gneiss with a layer of grittytalc schist a few feet southeast of the pegmatite. The latter is conformablewith the inclosing gneiss and strikes N. 70° E. with a dip of 50° N. The vein?wil £ ?iCa n?ar,the surface for the whole length opened, but was suf- r fno 7 riCV°KWOrk f°r a length of 8 feet only near the bottom of the in-cline. At the bottom of the incline the pay streak became longer again. MINING INDUSTRY. The whole thickness of the pegmatite was not removed, only that portioncarrying the mica streak being mined. The workings and geologic rela-tions are shown in cross and longitudinal sections in figure 11 (a) and (b)The mica has a dark-brown color in sheets of sufficient thickness, and part isspecked. Some of the crystals are well developed and others are partlywedge Figure 11.—Jim Wood mine. Jackson County, N. C. (a) Cross section,(t) section in plane of the vein. Gregory Mine.—The Gregory mine is 1 mile S. 20° W. of Panther Knob,near the top of the ridge running south from that mountain to the Cullo-whee Mountain divide. It was worked by an open cut about 50 feet backinto the mountain side. On one side of the cut a deeper cut and room hadbeen stoped out. The deepest part was probably not over 25 feet deep. Thecountry rock is mica gneiss, which strikes N. 30° E. with a vertical dip. Thepegmatite cuts across the gneiss with a strike of about N. 50° W. and a ver-
Size: 2620px × 954px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookideconomicpape, bookyear1912
