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Map 2166 Hearst-Ka pu ska sin g Sheet Geological Compilation Series
ONTARIO DEPARTMENT OF MINES HON. ALLAN F. LAWRENCE, Minister of Mines D. P. Douglass, Deputy Minister J. E. Thomson, Director, Geological Branch
50" 30 50"30©
7c
Scale, l inch to 200 miles
N.T.S. reference 42S.42J
LEGEND
CENOZOIC
PLEISTOCENE AND RECENT Till, clay, sand, gravel, peat.
MESOZOIC LOWER CRETACEOUS OR UPPER JURASSIC
MINERAL RESOURCES 13 Mattagami Formation: kaolinitic quartz sand, fireclay, clay, lignite. The map area contains deposits of gold, iron, kaolin, lithium, and silica. There has been no production other than test shipments, Gold was discovered in the southeast part of McCowan township before 1940 in quartz veins, sparsely minera^ed with chalcopyrite, arsenopyrite and galena occurring in silicified and locally pyritized POST MIDDLE DEVONIAN* metagreywacke. Iron formation has been explored in Fenton and Slacktownships and near the Pivabiska River, In Fenton and Slack townships it occurs in amphibolitized mafic metavolcanics, and magnetometer surveys indicate that the bands of iron formation are quite wide spread and some are continuous for four to five miles along strike. Diamond drilling by Camflo Mattagami Mines Ltd. indicates an 11c Upper Abitibi River Formation: fos- iron content of 19-25 percent across widths of 18 to 75 feet. siliferous limestone. An exposure of ferruginous limestone is recorded on the Opasatika Tib Middle Abitibi River Formation River in Bradley township. (Moose River Formation): non-fos- Sulphide-bearing iron formation has been found in Caithness, siliferous limestone, shale,gypsum. Fergus, Parnell, and Shearer townships. Analyses of these sul 11a Sextant Formation: sandstone, phide occurrences show only trace amounts of copper, zinc, and shale, arkose. nickel. Disseminated chalcopyrite has been reported in an outcrop 11 Undifferentiated. of gabbro in the northwest corner of Owen township, 10 miles west of Kapuskasing. EROSIONAL INTERVAL The pyroxenite of the Cargill Carbonatite Complex contains dis SILURIAN seminated chalcopyrite and magnetite. It was under option to Kennco Exploration (Canada) Ltd. The Clay-Howells Complex contains disseminated to massive 10 10 Limestone, dolomite, sandstone magnetite. In 1955 it was under option to the Steel Company of Canada and Interlake Iron Corporation, and was examined for UNCONFORMITY them by C. C. Huston and Associates. Ground magnetometer sur veys indicated two subparallel, slightly arcuate in plan, northeast- striking anomalies. The largest is 3500 feet long, and 300 feet wide. The geology and structure were outlined by 7500 feet of drilling, and a large tonnage of magnetite ore was indicated. The option was exercised in 1956 and Mattagami Mining Company Ltd. was incorporated to acquire the property. A spodumene-bearing granite pegmatite has been reported in 9 Diabase (dikes). Lowther township. Some lepidolite is also present. Large reserves of kaolin, fireclay, and silica sand are present in the Cretaceous sedimentary rocks. The best exposures are on the INTRUSIVE CONTACT Mattagami River in Kipling township, Coal Creek and the Missinaibi PROTEROZOIC and Pivabiska rivers in McBrien township, and at several loca tions on the Missinaibi River in Habel township. In 1942-3 898 tons CARBONATITE COMPLEXES6 of fireclay and 86 tons of silica sand were shipped from an open pit 8 Undifferentiated. on the property of General Refractory Products Limited in Kipling 8a Carbonatite, township. 8b Biotite-pyroxene-carbonate rock. For more detailed information see G. Bennett et a!., Operation 8c Pyroxenite. Kapuskasing, Ontario Department of Mines, Miscellaneous Paper 8d Syenite. 10, 1967. 8e Gabbro.
INTRUSIVE CONTACT ARCHEAN KAPUSKASING GRANULITE COMPLEX0 7 Undifferentiated. 7a Amphibole-pyroxene-quartz-feld- spar granulite.
FAULT CONTACT HOW TO OBTAIN ADDITIONAL INFORMATION FELSIC INTRUSIVE ROCKS G Undifferentiated, Published geological maps covering this sheet are indicated on 6a Massive granitic rocks, Index Maps 2079, 2080, and 2081, Ontario Department of Mines, 6b Foliated granitic rocks. Toronto, and on Index Sheet 42, Geological Survey of Canada, 6c Granite pegmatite. Department of Energy, Mines and Resources, Ottawa. 6d Ptygmatically folded pegmatite Four uncoloured preliminary maps covering this sheet may be stringers. obtained from the Publications Off ice, Ontario Department of Mines, Toronto. These are at the scale of one inch equals two miles and INTRUSIVE CONTACT are named as follows: P. 395 Pivabiska River; P. 396 Little Long. ULTRAMAFIC INTRUSIVE ROCKS Rapids; P. 397 Hearst; P. 398 Kapuskasing. Published geological reports covering this sheet are listed in 5 Undifferentiated. Bulletin No. 25, Ontario Department of Mines, and in the Indexes 5a Gabbro, metagabbro, anorthosite of Publications, Geological Survey of Canada. gabbro. Topographic maps of the area may be obtained from the Ontario 5b Peridotite, serpentinite, Department of Lands and Forests or the Topographic Survey, De INTRUSIVE CONTACT partment of Energy, Mines and Resources, Ottawa. Aeromagnetic maps covering this sheet may be obtained from MIGMATITE-METASEDIMENTARY- the Director, Geological Survey of Canada, Ottawa, or Publications METAVOLCANIC COMPLEX Office, Ontario Department of Mines, Parliament Buildings, Toronto 2. 4 Undifferentiated. 4a Biotite-quarte©feldspar Air photographs may be obtained from Silviculture Section, gneiss. Ontario Department of Lands and Forests, Downsview, Ontario, 4b Hornblende-quartz-feldspar gneiss. or the National Air Photographic Library, Department of Energy, 4c Amphibolite. Mines and Resources, Ottawa. 4d Quartz-mica schist, Information on mineral occurrences may be obtained at the 4e Hybrid granitic gneiss. offices of the local Resident Geologists (Timmins, Sault Ste. Marie). 4f Lit-par-lit granite. Mining claim maps and general information for prospectors may be obtained at the offices of the local Mining Recorders (Timmins, Sault Ste. Marie), or at the Ontario Department of Mines, Toronto. Up to date information on current developments of the minerals industry may be obtained from the annual review of the Ontario METAMORPHIC CONTACT Department of Mines, published in the early months of each year. METASEDIMENTS 3 Undifferentiated. 3a Greywacke. 3b Arkose. 3c Quartzite, 3d Amphibolite. 3e Phyllite.
THE MAP INDEX FELSIC TO INTERMEDIATE The red letters and numbers in the borders provide a location METAVOLCAN CS reference system based on that of Map 2148, Ontario Mineral 2 Undifferentiated. Map, 1968. 2a Rhyolite, dacite, trachyte: massive to foliated. 2b Pyroclastic rocks, agglomerates. 2c Felsic tuffs.
INTERMEDIATE TO MAFIC METAVOLCANICS 1 Undifferentiated. 1a Andesite, basalt; massive to foliated. 1b Andesite, basalt; pillowed. 1c Amphibolite, amphibole schist, amphibole-pyroxene-plagioclase gneiss. 1d Chlorite schist. 1e Mafic tuff.
Iron Formation, GRAVITY MAP
S Sulphide mineralization.
a Definitely post-Abitibi River Formation, possibly pre- Williams Island Formation. b Some diabase and carbonatite may be pre- Kapuskasing Granulite Complex faulting. c Age of metamorphism uncertain.
The letter "G" preceding a rock unit number, for example "65", indicates interpretation from geophysi cal data in drift covered areas. The letter "D" preceding a rock unit number, for example "D4a", indicates identification from diamond drill core.
MINERAL OCCURRENCES REFERENCE
Au ..... i...... Gold Li...... Lithium Fc ...... Iron mag .....,.. Magnetite kaol ...... Kaolin Si...... Silica
Contours of Equal Bouguer Gravity Contour interval 10 Milligals.
SYMBOLS
Glacial fluting. Drumlin.
Esker.
GEOLOGICAL RELIABILITY DIAGRAM Geological boundary.
Synclinal axis.
Anticlinal axis.
Fault.
Lineament.
Railway, with station or flagstop.
Provincial highway.
Motor road.
Other road.
Winter road.
Aircraft landing facilities. B Regional reconnaissance mapping; 1"to 2 miles. Published 1969 imoeit c,onjofirai freject,
Larger community. Map 2166 MAP COMPILATION SOURCES Geology and geological compilation by G. Bennett, Smaller community. D, D. Brown, P. T. George, E. J. Leahy, and assistants, 1986, for Operation Kapuskasing. HEARST-KAPUSKASING SHEET Mineral occurrence. Geology from published and unpublished maps of the Ontario Department of Mines, Geological Survey of Canada, and unpublished maps and reports of mining Mining division with boundary. Geological Compilation Series companies and Ontario Hydro Electric Power Commission.
Records of assessment work on file at Resident Geolo District boundary. ALGOMA AND COCHRANE DISTRICTS gists© offices, Timmins and Sault Ste. Marie.
Gravity Map derived from the Gravity Anomaly Map Township boundary. of Canada, Dominion Observatories, Department of Scale 1:253,440 or l Inch to 4 Miles Energy, Mines and Resources, Ottawa. Township boundary, unsurveyed. 12 14 18 Cartography by D. W. Robeson, J. R. Hunt, Ontario 10 Department of Mines, 1967.
10 20 Base maps compiled from Forest Resources Inventory Surveyed line. maps, Ontario-Department of Lands and Forests. l-