Ch. 7: Index

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150	INDEX.

Page. Fluidal cavities, figures showing............. 20,77 occurrence and character of........... 19-21,77 Fluorine minerals, distribution of............ 43 Fluorine phase, description of............... 21 Foliates, definition of....................___ 11 origin of................................. 11-13 pegmatite intrusions in.................. 11-13 French Mountain, beryls at.................. 70 G. Garnet, definition of......................-.. 17 occurrence and character of..... Passim 52-1 19 Gaseous constituents, effect of, in crystallization.......................... 30-32.45 effect of, on viscosity.................... 30-30 Gems, occurrence and character of......____ 20-27, 52,53,55-56,58,60-61,74,89-92,98-102,110 See also Tourmalines. Geology, account of.......................... 10-40 Georgetown, pegmatites in................ 105-109 pegmatites in, plate showing............ 10 Georgetown Center, pegmatites at......____ 105 Glass, feldspar for........................... 129 Gneiss, flow structure in, plate showing..... 12 foliation of..........................____ 12 13 Golden beryl, occurrence and character of— 140 Grain, variations in.......................- - 10,22 Granite, distribution of, map showing..... Pocket Goldings quarry, feldspar at............... 105-108 intergrowths at, plate showing........... 120 Granite, pegmatite intrusions in............. 13-15 figure showing........................... 14 Grant quarry, pegmatites in................. 01 Graphic granite, analyses of................. 124 composition of....................... 40-42,124 diagram showing.................... 40 occurrence and character of............. 22-23, 118-119,124-125 plate showing........................... 22 Graphite mine, rocks at..................... 11 Greenwood, pegmatites in................... 71-72 H. Hamlin, E.S., Mount Mica deposits found by. 81 work of..............................82, 83,85 Hamlinite, occurrence and character of____101-102 Hancock County, pegmatites in............. 03 HarndonHill, gems at.................... 100-102 Hebron, pegmatites in...................... 72-70 structure in, figure showing............. 73 Hibbs farm, quarry on...................... 72-74 quarry on, mica in...................... 140 section on, figure showing................ 73 Hinckleys Landing, pegmatites at........... 105 I. Iddings, J. P., on crystallization............. 30,45 Igneous foliates, nature of................... 12 Injection gneiss, occurrence of............... 11 plate showing........................... 10 Intergrowths, occurrence and character of... 22-26, 42-43 Intrusives, forms of......................... 35 Iron minerals, injurious effects of............ 127		Johansson, IT. K., on graphic granite	Paso. 40
		Keewaydin Pake, rocks near................ 15, 98 Kennebec Point, pegmatites in.............. 109 Knopf, Adolph. on graphics gran he.......... 24 Kunz, G. P., on l>ery!.......____.......... 145 on Ilarndon Kill.................______ 1 00 Kunzite, occurrence and character <>f........ 71 I.. Larson, V... K., and Wright, V. V... on quartz crystallization......... 35-39, 46 Lee, L. A., aid of........................ 98 Lepidolite, definition of.................... 17. occurrence and character of__....... 52 Lewiston, pegmatite from.........._........ 40 pegmatite from, photomicrograph of..... ]n Lime-soda feldspars, composition of......... 120-123 qualities of.........._____............ 121-123. Lincoln County, pegmatites in.........____ 63-70 Lithium phase, description of____........_.. 21 distribution of.......................... 71 M. McKovvn Point, pegmatites at......... _..... 65-69 McMahons Island, pegmatites on, plate showing......_ _................_ 10 Maine, cooperation of....................... 9 map of part of............_.......... Pocket Maine Feldspar Co.. quarries of........._ 50-54.115 quarries of, pegmatites in............._. 53 Map of part of Maine....._........._...... Pocket Metamorphism, occurrence and character of.. 11-12 See also Contact metamorphism. Miarolilic cavities, occurrence and character of.........-..................... 32-33 Mica, injurious effects of......._____........ 127 intergrowths of. plate showing____...... 120 occurrence and character of____......__. 26 Passim 51-119.138-139 types of..........______.......... .... 13,8-139 wedge structure in, plate showing....._. 138 See also Muscovite. Microcline, composition of........._____. .. 110 Mills quarry, description of............... 76 Mineral composition, character of..........._ 15-22 effects of. on crystallization__________ 28-29. 45 Mineralizers, definition of.........._________ 32 Minerals, effect, of, on crystallization....._ 29-30, 45 listof.................................... 16-18 proportions of.........-......._______ 18,28-29 Minot, pegmatites in........................ 59 Montana, graphic granite from......._....... 24 Mount Apatite, gems at...................-. 49- 50 pegmatites at............................ 49 -50 quarries on.............................. 50-59 Mount Ararat, quarries on......... 110-112,117-119 Mount Mica, gems from...................... 89-92 gems from, plates showing............... 88,90 mine at, description of................... 81-93 plates showing.....................-. 82,84 pegmatite pockets at, plates showing----- 26. 86 structure at, figure showing.............. 84

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