Moose River Basin: geology and mineral potential - Geology Ontario

Petrography of Mesozoic and Pleistocene Sands
APPENDIX A
Sample descriptions from: drillhole 75-02, drillhole 75-03, drillhole 75-05,
drillhole 75-06
Note: More complete logs are contained in Rogers etal. 1975.
Sphericity and quartz percentages provided by P.O. Telford, Ontario Geo
logical Survey.
Abbreviations
Bl. PC. Black Precambrian PC Precambrian
Bl. Ss. Black Sandstone qtz quartz
carb. carbonate Ss Sandstone
sulph sulphide
DRILLHOLE 75-02
Sample Descriptions
125- brownish grey, sandy, clayey silt till, with very few small quartz peb
bles; not too cohesive; lots of fines; no organics; likely some carbonate cement
fragments.
127 - brownish grey, sandy, clayey, silt till with very few small quartz peb
bles; crumbly; lots of fines; no organics maybe carbonate cement fragments.
131 - brownish grey, not too cohesive, quite sandy, clayey silt till, with very
few small quartz pebbles; no organics.
135 - brownish, poorly sorted, fine and coarse sand, with quartz concen
trated into finer size; also some limestones, and few Precambrian granules; pos
sibly better rounded in finer sizes; lots of fines; no organics; >2 mm—carb.3,
PC.l,Bl.PC.l,qtz.O.
137 - brownish grey, sandy silt till, with few quartz pebbles; not very cohe
sive; lots of fines; no organics.
138 - light brownish, moderately sorted, quartz sand with some limestones
and iron grains; high content of coarse biotite, K feldspar, plagioclase, quartz,
grains (from granite boulder) and carbonate cement fragments; many sulphide
grains; lots of white fines; no organics; >2 mm—carb.O, PC.22, Bl.PC.O, qtz.O,
sulph.3.
139 - grey sandy, pebbly quite cohesive, clay till containing quartz grains
and limestone pebbles and clay balls; lots of fines; no organics; >2 mm—carb.8,
PC.2, B1.PC.19, qtz.7, Red PC.2.
141 - brownish grey, very poorly sorted, subround to subangular; high
sphericity; fine to coarse silty sand with quartz concentrated in finer size, lime
stone and some Precambrian in coarser size; many medium small rounded
limestone pebbles; 909fc quartz; no organics; >2 mm—carb.8, PC.5, Bl. PC. 19,
qtz. 2.
143 - moderately well sorted, fairly angular, medium grained silica sand,
with some limestone and Precambrian grains, some coarse grains; no pebbles;
some balls of sand and clays; low sphericity 959fc; >2 mm—carb.l, PC.O, Bl.
PC.3,qtz.3.
144 - rather poorly sorted, angular to subangular, low sphericity, some
high, coarse to very coarse silica sand with many limestone and Precambrian
grains and rounded limestone and subangular Precambrian pebbles; sand 9896
quartz; almost no fines; no organics
149 - greyish, moderately sorted, angular to subangular, medium to me-
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