Kyanite, Sillimanite, and Andalusite Deposits of the Southeastern ...

CONTENTS
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FIGURE 14. Photomicrograph of kyanite-chloritoid quartzite from Gaston County, N.C. 15
15. Photomicrograph of sillimanite quartzite from Ryan-Purcley property, Gaston, N.C. __ .... 15
16. Photomicrograph of andalusite-sillimanite quartzite from Will Knox property, Gaston County, N.C.____________ 15
17. Photomicrograph of andalusite-pyrophyllite-quartz rock from Carolina Pyrophyllite Co. mine, Bowlings
Mountain, Granville County, N.C.____ . ____ ___...___________________________________.___________________.-___....-____..-__________.._-._ 16
18. Photomicrograph of andalusite-diaspore-pyrophyllite rock from Boles Mountain, Edgefield County, S.C. - 16
19. Photomicrograph of andalusite-diaspore-pyrophyllite rock from North State Pyrophyllite Co. prospect, Hillsboro,
Orange County, N.C.________________________________________________________________________________________________________________________________________ 16
20. Photomicrograph of kyanite-bearing gneiss from Yancey Cyanite Co. mine, Celo Mountain, Yancey County,
N.C. -_-_______________________________________^ 17
21. Photomicrograph of sillimanite-biotite-muscovite schist from Cages Mountain, Caldwell County, N.C. 17
22. Photomicrograph of sillimanite-biotite-quartz schist from Gideon property, Spartanburg County, S.C. _ 17
23. Water-worn kyanite crystals from Raper Creek, Habersham County, Ga. 18
24. Diagram showing Miyashiro's concept of the stability relations of kyanite, sillimanite, andalusite, and mullite 21
25. Quartz-kyanite vein in kyanite quartzite at north end of Clubb Mountain, Lincoln County, N.C. .__. 23
26. Periods of production at major domestic deposits of kyanite, andalusite, dumortierite, and topaz.. . 30
27. Index map of kyanite deposits in Farmville district, Buckingham, Charlotte, and Prince Edward Counties,
Va. ----_-..---_-___.________________ __ __________ 35
28. Diagrammatic sections of sequence of formations in Farmville district, Virginia . 37
29. Vertical sections showing folds and boudinage structure in kyanite quartzite, Baker Mountain, Prince Edward
County, Va..__ .- ___ -__- __.-._ . . _. . .. . .._ - - - -- . 43
30. Minor folds and pitted weathering in kyanite quartzite, Willis Mountain _ . ._ _.- __.. 45
31. View looking north along the west side of Willis Mountain ._____ ________________________ ____. __ 46
32. Longitudinal and vertical cross sections of elongated lens of coarse massive kyanite, Willis Mountain, Buckingham
County, Va..._ . . -- __ . . - .. _. _ . _ . ._. - . - - -_ 48
33. Vertical sections showing drag folds in kyanite quartzite in recumbent anticline of Woods Mountain, Buckingham
County, Va. _________________ ____________________________ _____________ ......_____ _. 49
34. Geologic map of Leigh Mountain, Prince Edward County, Va. _ . ... ....... ... 52
35. Map of kyanite quartzite southwest of Meadville, Halifax County, Va.... ... ... . 54
36. Light-gray quartz-chloritoid rock with a little kyanite veined and replaced by light-tan quartz-kyanite
rock, Hagers Mountain, Person County, N.C. ___________________________________________ 56
37. Geologic map of Corbett kyanite deposit, Johnston County, N.C. ______._________._________ _ . 57
38. Reconnaissance outcrop map of kyanite area, Johnston County, N.C. - 58
39. Map of kyanite schist and gneiss belt in Burnsville-Swannanoa area, North Carolina 61
40. Geologic map of Youngs Mountain kyanite area, Rutherford County, N.C.__ ...... 63
41. Index map of kyanite and sillimanite deposits in the Kings Mountain district, North Carolina and South
Carolina ______ _ ____ _______ __ _ _ ___ 65
42. Sketch map of the principal structural features and metamorphic facies in the Crowders Mountain-Henry
Knob area, North Carolina and South Carolina ___________ _ ...__. 67
43. Photomicrograph of metavolcanic biotite gneiss from creek -bed 1,000 feet southeast of Bethany Church,
York County, S.C. ______ __ __ _________________ ___________________ ___________.__._._........... . .................... 71
44. Highly weathered gently dipping thin-bedded schistose pyroclastic rocks, half a mile north of Sparrow
Springs Lake, Gaston County, N.C. .. . _ .. . .. _ . 74
45. Schistose conglomerate, 0.45 mile N. 75° E. of Oak View Baptist Church, Gaston County, N.C. 74
46. Photomicrograph of partially replaced andalusite porphyroblast in schist, 0.4 mile south of Crowders Mountain
village, Gaston County, N.C. _____________________ _________________ _ __________ _________________________ 75
47. Isoclinal fold in kyanite quartzite from crest of Crowders Mountain, Gaston County, N.C.... 76
48. Foliated kyanite quartzite at south end of The Pinnacle, Gaston County, N.C. 77
49. Complex folding in kyanite quartzite, Shelton property, Gaston County, N.C. . 77
50. Photomicrograph of corundum gneiss from septum 1.3 miles northwest of Pisgah Church, Gaston County,
N.C. ....._.... ...__ _ . ..... ..... ....... ... 80
51. Small folds in fine-grained quartz-white mica schist, just east of dam at Crowders Mountain village .. 81
52. Geologic map of The Pinnacle, Gaston County, N.C. _______. .__._ _-..__-...___.__._..____ . ____ _ __ 87
53. Geologic map of the Will Knox property, Gaston County, N.C. _ _ _ . . 91
54. Sketch map of geology of kyanite deposits, Little Mountain, Newberry County, S.C. ... .... 96
55. Geologic map of Graves Mountain, Lincoln County, Ga. _________ _ __ .. .... 97
56. Map and section showing distribution of kyanite schist and placer kyanite deposits in Habersham and Rabun
Counties, Ga. _____________________...... ................. .................... . ...... _ __ 101
57. Photomicrograph of massive kyanite from about 1 mile west of Long Swamp, Pickens County, Ga. 103
58. Photomicrograph of massive kyanite from India_.............. . .... ....._ ________ 103
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