1024 



THE GEOLOGY OF MINNESOTA. 



Little Pine lake, rocks from, 481. 

 Little Renard lake, rooks from, 051 '>, 057. 

 Little Saganaga lake, rocks from, 537, 906. 

 Little Sucker lake, rocks from, 848. 

 Little Trout lake, 485. 



rocks from, 488-490. 

 Logan, Sir William, on Huronian, 1.'!. 

 Logan sills, 59, 1000. 

 Lone Jack mine, 762. 



Long hay, Vermilion lake, rocks from, 604. 

 Long lake, rocks from, 332, 3o3, 627, 839-842, Oil, 9L2, 



918. 



London, rocks from, 155-157. 

 Loon lake, rocks from, 505 -507, 511-513, 832-834. 



sills, 56. 

 Lost lake, 801. 

 Lover's bay, rocks from, 453. 

 Lower Keewatin, 13, 988. 

 folding at end of, 15. 



Lower Quinnesec falls, rocks from, 808,809. 

 Lucky bay. rocks from, 425. 

 Lucilc island, rocks from, 298. 

 Lucilc islands, 296. 



rocks from, 290-299, 797-799. 

 Lutsen, 535. 



rocks from, 2-13 215, 517 54'.). 930. 

 Lyell, Charles, on metamorphism, 23. 

 Mallmann's peak, 527, 003. 

 Magma, alkaline, 30, 31, 39. 

 ferromagnesian, 27, 28. 

 Magnet island, 298. 



rocks from, 797, 798. 

 Magnetic iron ore. 



see under iron ore. 

 Magnetic lake, rocks from, 312. 

 Magnetite, as a rock-forming mineral, 963. 

 Maine prairie, rocks from, 567. 

 Manitou, 53. 

 defined, 55. 

 epoch of eruption, 73. 

 Manitou river, rocks from, 405, 459. 

 Maple Leaf lake, 318. 



rocks from, 314. 



Marble, Ogishke Muncie lake, 16, 525. 

 Marchand, M. C., 76. 

 Marr, on older rocks, '21. 

 Matthew, G. P., on Olenellus horizon, 1. 

 on Medusichnites, 47. 

 " St. John group, 47. 

 Mayhew lake, rocks from, 495-505, 680-682. 

 McParland's trail, rocks from, 478, 479. 

 McKinley, rocks from, 762. 

 Meeds, A. D., analyses by, 315, 515, 893, 903. 



rock series of, 78, 934, 935. 

 Menan island. Vermilion lake, rocks from, 302, 303, 



587, 588, 815, 816. 

 Merillan, 575. 



Merritt, rocks from, 760, 761. 

 Mesabi iron ore, origin, 990. 

 Mesabi lake, 539. 

 Mesabi Mountain mini', 702 764. 

 Mesabi range, early rock numbers from, 478,479. 

 Mesabi station, rocks from, 923. 

 Mesolite, analysis, 230. 



Mesotype, analysis, 400. 

 Metamorphism, Animikie, 50. 

 Archean fragmentals, 9, 972. 

 end of Lower Keewatin, 15. 

 greenstone, 19. 

 Lyell's theory of, 23. 

 order of generation of new minerals, 37. 

 IVwabie quartzyte, 70. 

 sediments to form granites, 35, 972. 

 Method of labeling, 78. 

 Mica schist, Disappointment lake, 18. 

 Michel Le!vy. (J47, 053, 966. 

 Mineralogy and Petrology of Minnesota, 937. 

 Minneapolis, 500. 



Minong mine, rocks from, 434-4 39. 

 Misquah hills, 490, 979, 981. 

 Misquah lake, rocks from, 490-192. 

 Mississippi river, rocks from, 50S, 570, 730, 737. 750, 



757. 919. 



Mission creek, rocks from, 370. 

 Montana mine, rocks from, 885. 

 Moose lake, jaspilyte, 4, 18, 853, 883. 

 rocks from, 305, 849-853, 877-883. 

 rocks south of, 864-877. 

 Mordenite. analysis, -103. 

 Morrison bay, rocks from, 795. 

 Morton, rocks from, 730. 

 Motley, gabbro. 1 5. 



rocks from, 560, 507. 

 Mountain Iron mine, 844-840. 

 Mud conglomerate, 43. 

 Mud creek, rocks from, 340. 



Mud Creek bay. Vermilion lake, rocks from, 340. 

 Mud lake, rocks from, 338-340, 509, 729, 910. 

 Muscovado. 



see muscovadyte. 

 Muscavado lake, 68. 



rocks from, 699, 784, 983. 

 Muscovadyte. 



Disappointment lake, 857, 9S2. 

 derived from greenstone. OS. 920. 

 discussed, 67. 



formed by contact of gabbro, 11. 

 Gabemichigama lake, 67, 68, 536. 905. 

 relation to gabbro, 980, 981. 

 Muscovite, as a rock-forming miner:]!. 915. 

 Newton lake, rocks from, a30. 331. oos. 

 New Ulm, 544, 503-565, 569. 



conglomerate, 52. 

 Nickel ore, 496. 



analysis, 496. 



Nipissing lake, rocks from. 7 111. 

 Nomenclature of Archean fragmentala, 13. 

 North Brute river, rocks from, 075. 

 North lake, rocks from, 075. 

 North Redwood, rocks from, 735. 

 Northrop mountain, 532. 

 Norwood, J. C., on dikes on Pigeon river. 57. 



red rocks, 978. 

 Noryte, 981. 



Oak island, Vermilion lake, rocks from, 007. 

 Oak lake, rock at Portage to Snganaga lake, 0. 31 7. *20. 



rocks from 317, 318, 826-82:-!. 

 Oak Point lake, 848. 



