70 CORUNDUM, ITS OCCUKRENCE AND DISTRIBUTION. 
34. Diopsicle (var. pyroxene). Koek constituent. 
35. Distbene (or cj^anite). In gneisses and schists. Regional nietamorphisni. 
36. Dudleyite (vermiculite). Bnclv Creelv mine, North Carolina. In peridotite. 
Alteration product. 
37. Edenite (var. amphibole). Kock constituent. 
38. Enstatite. Rock constituent. Primary. Alteration product. 
39. Epidote. In peridotite and amphibolite. Alteration product. 
P]upbyllite. See I*aragonite. 
40. Fibrolite (or sillinianite). Rock constitutent. Regional metamorphism. 
41. Fuclisite (var. mnscovite). (Georgia and North Carolina. In peridotite. 
42. Gabnite. With corundum in gravels at Cowee Creek, North Carolina. 
Garnet. See varieties. Contact metamorphism. 
43. Garnierite (var. (Tentbite). Georgia and North Ciirolina. In peridotite. 
Alteration ]»roducu 
44. Genthite. Georgia and North Carolina. In peridotite. Alteration product. 
45. Gibbsite. Pennsylvania. In serpentine. Alteration product. 
40. Graphite. In schists and gneisses. Product of metamorphism. 
47. Hematite. Constituent of emery. Primary. In peridotite. Alteration 
product. 
48. Hornblende (var. amphibole). Rock constituent. 
49. Hyalite (var. opal). North Carolina. In [)eridotlte. Alteration product. 
50. Hyperstbene. Rock constituent. 
51. Ilmenite (or menaccanite). North Carolina. In peridotite. Primary. 
52. Kammererite (var. penninite). Georgia and North Carolina. In ])eridotite. 
Alteration product. 
53. Kaolin (or kaolinite). In feldspar. Alteration product. 
54. Kerrite (vermiculite). North Carolina. In peridotite. Alteration ijroduct. 
55. Labradorite. North Carolina. I'rimaiT. In ])eridotite and amphiboh> 
schist. 
50. Lazulite. North Carolina. Alteration product. 
57. Lepidolite. Greenwood, Me. In mica-schist. Regional metamorphism. 
58. Limonite. Georgia, North Carolina, Massacliusetts, and Pennsylvania. 
Alteration product. 
59. Lucasite (vermiculite). North Carolina. In peridotite. Alteration i)rod- 
uct. 
00. Maconite (vermiculite). North Carolina. In i)eridotite. Alteration prod- 
uct. 
61. Magnesite. Georgia and North Carolina. In peridotite. Alteration product. 
62. Magnetite. Constituent of emery. In peridotite. Alteration product. 
03. Margarite. California, Georgia, North Carolina, Massachusetts, and Penn- 
sylvania. In peridotite, amphibolite, etc. Alteration product. 
64. Marmolite (var. serpentine). North Carolina. In peridotite. Alteration 
product. 
65. Meerschaum (or sepiolite). North Carolina. In peridotite. Alteration 
product. 
66. Meionite. North Carolina. In peridotite. Alteration product. 
07. Muscovite. Rock constituent. Contact and regional metamorphism. Also 
alteration product of corundum. 
68. Oligoclase. Rock constituent. Primary mineral in corundum vein in peri- 
dotite. 
69. Opal. North Carolina. In peridotite. Alteration product. 
70. Orthoclase. Rock constituent. 
71. Painterite (vermiculite). Pennsylvania. Alteration product. 
72. Paragonite (eui)byllite variety). Unionville, Pa. Alteration product. 
