 | | Report (Issue volume) | | GE and Economic Minerals of Canada PART A NUNC COCNOSCO EX PARTE THOMAS J. BATA LIBRARY TRENT UNIVERSITY...AND ECONOMIC MINERALS OF CANADA © Minister of Supply and Services Canada 1976 Available by mail from...Printing and Publishing Supply and Services Canada Ottawa, Canada K1A 0S9 or through your bookseller Catalogue...Catalogue No. M43-1/1976-1-7 Price: Canada: $8.00 ISBN 0-660-00553-0 Other countries: $9.60 Price subject..., Altona, Manitoba, Canada Contract No. OKX6-0236 GEOLOGICAL SURVEY OF CANADA ECONOMIC GEOLOGY REPORT |  | | Book (volume) | | promising diamond fields being vigorously explored in Canada and the United States. Experts agree that in several...diamond-bearing kimberlite bodies, most likely in Canada. Systematic large-scale mining of sapphire-bearing...certain other areas, as around the Great Lakes region. Numerous small discoveries of gem materials took... Map of kimberlite fields in Wyoming-Colorado region........cccsscsseeeseeeeseens 130 Figure 28. ... Map of amethyst mine locations, ‘Thunder Bay region of Ontario................. 310 Figure 64. View |  | | Journal (issue) | | in relation to the dumps, old mill site and Cooks pond. My sketch ha'i no scale but the whole area is less... -, mUI loon~t,or, ,.,l,ng, •nd•lu,;•1 Cooks Pond ~~tltJ ..., ~ ~ MINERAL NEWS Vol. 21, No. 3...per year, or $46.00 for two years; addresses in Canada and Mexico are US$48.00 per year, or US$90.00 for...scientific journal, Science (Vol.149, 1965), at Don Juan Pond, Victoria Land, Antarctica, which explains the origin...surface. A subsequent find was made at North Andros Island, Bahamas (found in the stratified fresh to brackish | | | Book (volume) | | promising diamond fields being vigorously explored in Canada and the United States. Experts agree that in several...dia1nond-bearing kimberlite bodies, most likely in Canada. Systematic large-scale mining of sapphire-bearing...certain other areas, as around the Great Lakes region. Numerous s1nall discoveries of gem materials took... Map of kimberlite fields in Wyoming-Colorado region.................................. 13 0 Figure...63. Map of amethyst nune locations, Thunder Bay region of Ontario................. 310 Figure 64. View |  | | Report (issue) | | Appalachian Highlands and the Coastal Plains __ Central region ______________________________ Lake Michigan _________________...Regional geologic investigations—Continued Central region—Continued Minnesota ______________———----_Mississippi...geophysical studies __________ Basin and Range region ______________________ Mineral-resource studies...Stratigraphic and structural studies ______ Pacific coast region _______ —— —— —— _______ California _______________-_——————...investigations —— — ___ — _ —— — __. Northeastern region _ — _ — - — — - — — —— — -—Regional studies ———————_—______ |  | | Book (volume) | | the orthopyroxenes of the dacites from the same region. From his investigation of the synthetic MgSi03—CaMgSi206... garnet-orthopyroxene-quartz rock. Pond Inlet, N.E. Baffin Island (Howie, unpublished). Anal. R. A. Howie...Wilson (1952). In the volcanic rocks of the San Juan region, Colorado (Larsen et al., 1936), orthopyroxene...amphibolite gneiss, hornblende-hypersthene gneiss, and almandine-bearing ultrabasic pyroxenite gneiss. In the latter...associated with fayalite, hedenbergite, grunerite or almandine-spessartine garnet, occurs in some regionally |  | | Report (issue) | | rocks Precambrian rocks Tectonics Basin and Range region _______ _______________ Stratigraphic and structural...Igneous rocks Geochronologic studies Pacific coast region Oregon Western United States Washington California...maps Water-resource investigations Northeastern region Connecticut Delaware Illinois Indiana Maryland...Rhode Island III IV CONTENTS Page Water-resource investigations Continued Northeastern region Continued...________________________ Wisconsin ________________ Southeastern region ___________ Alabama _______________________ Florida |  | | Report (volume) | | rocks Precambrian rocks Tectonics Basin and Range region _______ _______________ Stratigraphic and structural...Igneous rocks Geochronologic studies Pacific coast region Oregon Western United States Washington California...maps Water-resource investigations Northeastern region Connecticut Delaware Illinois Indiana Maryland...Rhode Island III IV CONTENTS Page Water-resource investigations Continued Northeastern region Continued...________________________ Wisconsin ________________ Southeastern region ___________ Alabama _______________________ Florida |  | | Book (volume) | | Geophysical Research ; Mineralogical Association of Canada for diagram from Canadian Mineralogist; Carnegie...ectite, gabbro inclusion in alkali basalt, lki Island, Japan (Aoki, 1968). Anal. K. Aoki. . 12 Broozite...garnet -0rthopyroxenc-quart2 rock, Pond Inlet, NE. Baffin Island (Howie, 1963). Anal. R. A. Howie. 27...xenoliths in the basalts and trachybasalts of Gough Island has been described by Le Maitre (1965). The spinel...and McLelland, 1973). In the southern area of the region the orthopyroxene shelJ is succeeded by a partial |
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