Day 3 Quiz Flashcards
Assuming that all field measurements are correctly
recorded and are taken from a single uniformly
dipping stratum, which among the following attitude
reading is correct?
N 35o E, 33o SE
(highest reading)
Calculate the thickness of a gold-bearing quartz vein
having a S 45o W strike, a 60o NW true dip, and an
exposed horizontal thickness of 80 centimeters.
0.693 m
True or False: Resistivity and resistance of the
subsurface materials are both measured during
electrical resistivity surveys.
True
Unsaturated sinkholes will register what relative
resistivity signature?
Anomalously high resistivity values
??
What physical property does a magnetic survey
measure?
Magnetic susceptibility
One troy ounce is equivalent to how many grams?
31.10 grams
True or False: Mineral/Ore Reserves are either
classified as measured or proven reserves.
False (Resource = Inferred, Indicated, Measured; Reserves = Probable, Proven)
True or False: A 24k gold earing is harder than a 21k
gold watch.
False. The higher the gold content, the lesser its added metals = less harder
PQ-sized drill cores can retrieve core samples that
have a diameter of _______ mm.
85
(AQ-27; BQ-36.5; NQ-47.6; HQ-63.5; HQ3-61.1; PQ3-83; CHD76-43.5; CHD101-63.5; CHD134-85)
These are hydrothermal deposits that were formed
in moderate pressure and relatively low temperature
(50-200oC) conditions.
Epithermal?
It is the lowest grade that will meet the costs
incurred by a mining operation.
Cut-off
Saline water has a relatively _________ resistivity
compared to freshwater.
Lower
The following techniques/methods are employed
during mineral exploration, except: (Geologic Mapping, Geophysics, Remote Sensing, Geochemistry)
None of the above
Calculate the core recovery of a 2-meter drill run
which was able to retrieve core pieces having the
following lengths: 300mm, 450mm, 50mm, 600mm,
200mm, 100mm, 40mm.
87%
