2. Which of the Following Is Considered to Be a Common Rock-Forming Mineral ?

2. Which of the Following Is Considered to Be a Common Rock-Forming Mineral ?

Quiz 1

1. Which of the following is not a physical property measured by an instrument during a geophysical survey of a mineral property ?

A. Gravity
B. Magnetism
C. Color
D. Electrical conductivity

2. Which of the following is considered to be a common rock-forming mineral ?

A. Corundum
B. Gold
C. Zircon
D. Quartz

3. The term which expresses the concentration of a substance in an ore deposit is called the ______.

A. porosity
B. tensile strength
C. grade
D. tonnage
E. aspect ratio

4. Which of the following is not a type of crustal plate boundary ?

A. spreading center or rift
B. transcurrent (strike-slip) fault
C. subduction zone
D. overturned fold

5. Which of the following mineral goups contains the largest number of known mineral species ?

A. sulfosalts
B. silicates
C. sulfides
D. oxides
E. carbonates

6. Which of the following minerals has the most cleavages ?

A. galena
B. biotite
C. feldspar
D. hornblende or amphibole
E. quartz

7. An "acicular" crystal habit means ______.

A. short, stubby crystals
B. long, needle-like crystals
C. six-sided crystals
D. bubble-textured crystals

8. Which of the following minerals is mined for copper ?

A. galena
B. hematite
C. sphalerite
D. chalcopyrite

9. Vitreous luster means ______.

A. dull luster
B. glassy
C. waxy luster
D. metallic

10. Which of the following minerals on Moh's Hardness Scale is harder than Topaz ?

A. orthoclase
B. apatite
C. fluorite
D. corundum
E. quartz

Quiz 2

1. Which of the following is not one of the three main rock groups on the earth's surface ?

A. Igneous

B. Meteoritc

C. Metamorphic

D. Sedimentary

2. To identify a rock in the field, we must first ______?

A. Arrange for laboratory analysis.

B. Take a compass bearing.

C. Start a drilling program.

D. Identify the minerals present

3. Origin, ______and ______must be determined in order to name a rock.

A. composition and extraterrestrialdistribution

B. texture and reflectance

C. composition and texture

D. texture and extraterrestrial distribution

4. An example of a coarse-grained metamorphic rock is called ______?

A. gneiss

B. slate

C. wacke

D. rhyolite

5. An example of a fine-grained igneous rock is a ______?

A. schist

B. granite

C. gneiss

D. rhyolite

6. The Principle of Uniformitarianism says ______?

A. sediments are all a uniform thickness.

B. all employees must wear uniforms.

C. angle of incidence equals angle of reflection.

D. presently-acting forces were operating in the past.

7. The Law of Cross-Cutting Relationships states ______?

A. in a sedimentary sequence, the youngest rocks are on top.

B. in a sedimentary sequence, the oldest rocks are on top.

C. intrusive igneous rocks such as dikes are younger than the rocks they cut.

D. intrusive igneous rocks such as dikes are older than the rocks they cut.

8. The "absolute age" of a rock is determined by ______?

A. the law of superposition.

B. radiometric age dating methods.

C. light transmitting properties.

D. light reflecting properties.

9. "Ore" is rock which ______?

A. can be carried in a large dump truck.

B. are present on Mars.

C. is characterized by low concentrations of a mineral commodity.

D. can be mined for a profit.

10. A 'prospect' is a site where ______?

A. mineralization exists but the extent is not known.

B. an ore deposit is known to exist.

C. a archeological dig is in progress.

D. only discouraging results have been found.

Class 3 - Quiz

1. Which of the following is not a typical component of most maps ?

A. North arrow

B. Scale

C. Table of contents

D. Explanation

2. Geochemical maps do not show ______?

A. rock sample locations

B. soil sample locations

C. magnetism

D. anomalous sample locations

3. A thematic geochemistry map shows ______?

A. numeric geochemical values

B. contoured geochemical values

C. electrical properties

D. colors or symbols which graphically summarize the information.

4. Which coordinate is southeast of a point with the coordinates 5,000 N 8,000 E ?

A. 2,000 N 6,000 E

B. 6,000 N 5,000 E

C. 7,000 N 9,000 E

D. 4,000 N 12,000 E

5. Coordinates of longitude and latitude are given in units of ______?

A. kilometers

B. degrees, minutes, seconds

C. meters

D. feet

6. An azimuth of 265 indicates a compass direction of ______?

A. southwest

B. northeast

C. southeast

D. due west

7. Rocks exposed at the surface which are thought to indicate the composition of bedrock are called ______?

A. outcrops

B. float

C. rubble

D. veins

8. Which of the following is not essential information to gather in the field when creating a geologic map ?

A. lithology

B. geometry

C. location

D. time and date

9. The strike of a planar feature in outcrop is a measurement of the bearing of ______?

A. a line straight down the dip of the feature.

B. a horizontal line in the plane of the feature.

C. the compass direction towards the nearest tree.

D. the alignment of the largest boulders.

10. The instrument used to measure the dip angle of a planar feature is called a ______?

A. reticule

B. inclinometer

C. ohm meter

D. siesmometer

Quiz 4

1. Hypabysal igneous rocks are those formed ______?

A. deep below the surface

B. on the surface

C. at shallow depth below the surface

D. by extrusion into water

2. Mafic igneous rocks contain lots of ______?

A. iron & magnesium bearing minerals

B. quartz and feldspar

C. topaz and mica

D. diamonds

3. An igneous rock which is coarse-grained, has a medium tone (color), and contains less than 10% quartz would be called a ______?

A. granite

B. gabbro

C. diorite

D. andesite

4. According to Streckheisen's classification, a plutonic rock containing less than 5% quartz and between 35% and 65% alkali feldspar is called a ______?

A. granodiorite

B. tonalite

C. granite

D. monzonite

5. Coarse-grained igneous rocks with clearly visible crystals are called ______?

A. phaneritic

B. aphanitic

C. hyalophitic

D. apophyses

6. The process of changing a melt composition by progressive removal of crystals of different minerals is called ______?

A. fractional crystallization

B. isostasy

C. gravitational attraction

D. osmosis

7. Which of the following is not a common rock-forming mineral ?

A. quartz

B. topaz

C. feldspar

D. mica

8. Chromite deposits are thought to form by ______?

A. volcanic eruption

B. settling of chromite grains to the bottom of the magma chamber

C. alteration of iron oxide

D. reaction of pyroxene with mica

9. Pegmatites can form ore deposits which are mined for ______?

A. gold

B. iron

C. zinc

D. rare elements in accessory minerals

10. Which of these minerals are formed exclusively in kimberlite ultramafic, pipe-shaped intrusions ?

A. corundum

B. diamonds

C. hornblende

D. biotite

Quiz 5

1. Which of the following porphyry style deposits occurs in more felsic plutonic rocks ?

A. Porphyry copper deposits
B. Porphyry molybdenum deposits
C. Sandstone-hosted uranium deposits
D. Banded iron formation

2. Which type of porphyry deposit is most likely to contain significant gold credits ?

A. Porphyry copper deposits
B. Porphyry molybdenum deposits
C. Disseminated ilmenite deposits
D. Pegmatite deposits

3. “Proximal” ore mineralization means ______?

A. formed far from the source of fluids.
B. formed at least 5 km from a rift zone.
C. formed near the source of fluids.
D. formed within 5 km from a rift zone.

4. Which of the following iron oxide minerals is known to substitute gold for iron in the crystal lattice during magmatic crystallization?

A. ilmenite
B. hematite
C. magnetite
D. rutile

5. Which of the following minerals is not a common calc silicate skarn mineral ?

A. diopside
B. epidote
C. garnet
D. kyanite

6. Which of the following is not an advantage of using color infrared film ?

A. It delineates vegetation.

B. It is not effected by cloud cover.
C. It is not affected by haze.
D. It delineates moist soil.

7. Outcrop V’s in a structural dome point ______?

A. inward

B. outward
C. upward
D. all of the above

8. Stereo pairs of aerial photographs can be used to ______?

A. obtain the illusion of a 3 dimensional image.
B. listen to digitally recorded music in stereo.
C. determine the direction to magnetic north.
D. determine the scale of the photographs.

9. Landsat images are obtained from ______?

A. film type cameras mounted on high altitude jets.
B. electronic or digital cameras mounted on satellites.
C. film type cameras mounted on helicopters.
D. microwave transmission and reflection.

10. Side-looking radar images are obtained by ______?

A. using a vertical mounted camera.
B. recording the sun’s radiation reflected off of the Earth’s surface.
C. recording the infrared portion of the spectrum using an oblique angle.
D. recording microwaves transmitted from a spacecraft and reflected off of the Earth’s surface.

Class 6 Quiz

1. Which volcanic rock type contains the most silica and is associated with violent eruptions ?

A. Basalt

B. Basaltic Andesite
C. Dacite

D. Rhyolite

2. Why does rhyolite magma tend to plug vent areas when it is being extruded ?

A. Because it is extremely viscous.
B. Because it is extremely fluid.
C. Because it contains lots of crystals.
D. Because it contains lots of magnetite.

3. Use the Streckheisen diagram to determine which of the following rock types contains the most alkali feldspar:

A. Dacite
B. Quartz Latite

C. Alkali-feldspar Rhyolite

D. Trachyte

4. The yellow color of “yellow ore” in Kuroko type deposits is largely caused by ______?

A. Gold

B. Chalcopyrite

C. Pyrite

D. Pyrrhotite

E. All of the above

5. The Greens Creek VMS deposit is built on basement rocks consisting of ______?

A. Chloritic Diorite
B. Greenstone
C. Epidote veins
D. Garnet-rich rocks

6. Most VMS deposits are associated with the extrusion of bimodal (both felsic and mafic) magma.

A. True

B. False

7. Barite in VMS deposits occurs as a ______?

A. mixture with chalcopyrite.

B. ash fall tuff

C. a capping layer

D. disseminations in the vent area.

8.Stratabound Sediment (SS) deposits resemble VMS deposits in which of the following ways?

A. Both are commonly hosted in black shale.
B. Both have a capping layer of barite.
C. Both always contain dacite flows.
D. Both form along the bounding faults of calderas.

9. The most common metal zoning sequence in VMS deposits places which element in a proximal position (ie, closer to source of fluids) ?

A. barium
B. lead
C. zinc
D. copper

10. Which type of alteration forms the outermost, or “distal”, alteration zone in epithermal deposits?

A. Quartz-sericite
B. Topaz
C. Quartz-adularia
D. Propyllitic (usually chlorite)

11. Epithermal deposits are famous for their extremely rich ______values ?

A. copper

B. nickel

C. chromium

D. gold and silver

Class 7 Quiz

1. Why is a sandstone more resistant to erosion than a limestone ?

A. Sandstone always has a calcite matrix.

B. Sandstone always has a clay matrix.
C. Sandstone is mostly quartz.

D. Sandstone is mostly calcite.

2. Glacial deposits are ______?

A. well sorted.
B. poorly sorted.
C. always more sorted than dikes.
D. sort of even layered.

3. A clastic sedimentary rock containing abundant quartz and feldspar with an average grain size of 1 mm is called a ______?

A. fine-grained breccia.
B. medium-grained graywacke.

C. fine-grained quartz sandstone.

D. medium-grained arkose.

4. Low temperature Sediment (LTS)-hosted copper deposits of the Zambia copper belt, which is the correct proximal to distal mineral zoning pattern observed ?

A. Chalcopyrite (Cp) to pyrite (Py).

B. Py to Cp.

C. Py to Bn (Bornite).

D. None of the above.

5. Which of the following causes reception problems when navigating with a GPS ?

A. Steep terrain.
B. A thick canopy of vegetation.
C. A sleet storm.
D. All of the above.

6. LTS hosted deposits are characteristically metamorphosed to the amphibolite facies.

A. True

B. False

7. Which of the following locations is southwest of my position of 460,000 E, and 7,225,000 N?

A. 462,000E, 7350,000 N

B. 459,050 E, 7,150,000 N

C. 461,000E, 7,290,000 N

D. 461,000 E, 7,125,000 N

8. The main purpose of configuring a GPS is to ______?

A. set the unit to the map page.
B. set the unit to the main menu.
C. hold the unit in the correct hand facing the correct direction.
D. set the distance units and datum.

9. The direction to a waypoint is given in ______?

A. meters.
B. kilometers.
C. radians.
D. degrees.

10. A bearing of 272 degrees is ______?

A. southwest.
B. southeast.
C. northeast.
D. northwest

Class Quiz 8

1. Which of the following lithologies would make a good host rock for a disseminated ore deposit ?

A. silicified quartzite
B. silicified granite
C. calcareous sandstone
D. calcareous shale

2. Galena-sphalerite mineralization in a porphyry copper deposit setting is most likely to be associated with which type of alteration?

A. Propylitic
B. Phyllic
C. Potassic
D. All of the above

3. Which rock type is most commonly associated with epithermal mineralization ?

A. plutonic
B. volcanic
C. sedimentary
D. metamorphic

4. Which alteration type is most often associated with low pH (acidic) conditions ?

A. Silicification
B. Propylitic
C. Potassic
D. Phyllic

5. Which carbonate mineral is most likely to be associated with talc alteration ?

A. dolomite
B. strontianite
C. ankerite
D. witherite

6. If my claim was on the central portion of a zoned vein system, the alteration types are likely to be ______.

A. adjacent to vein: propyliticaway from vein: unaltered wallrock
B. adjacent to vein: advanced argillic away from vein: sericitic
C. adjacent to vein: sericitic or argillic away from vein: argillic or propylitic
D. adjacent to vein: pyrite away from vein: magnetite

Class 9 - Quiz

1. The protolith of a marble is a ______?

A. sandstone

B. siltstone
C. limestone

D. conglomerate

2. Which calc-silicate mineral indicates the highest temperature environment ?

A. Talc

B. Tremolite

C. Diopside

D. Chlorite

3. Which metamorphic rock has a slight sheen due to incipient growth of micaceous minerals ?

A. gneiss

B. schist

C. meta-granite

D. phyllite

4. Banded iron formations contain which type of metamorphic deposit ?

A. copper

B. gold

C. zinc

D. ruthenium

5. The coarse-grained metamorphic equivalent of a rhyolite is a ______?

A. quartzite
B. marble
C. calcareous slate
D. granitic gneiss

6. Which of the following is not an example of a metamorphic lineation ?

A. stretched pebbles

B. pencil cleavage

C. parallel micas

D. aligned hornblende

7. A metamorphic rock containing mostly parallel muscovite flakes and local porphyroblasts of andalusite is called a ______?

A. andalusite muscovite schist

B. andalusite biotite schist

C. garnet andalusite schist

D. garnet andalusite biotite schist

8. In a regional metamorphic setting, which of these rock types is most likely to contain an ore deposit ?

A. sillimanite schist
B. quartz orthoclase gneiss
C. chlorite schist
D. wollastonite hornfels

9. During regional amphibolite facies metamorphism of a mafic igneous rock, albite and epidote react to form which mineral ?

A. almandine
B. tremolite
C. grossular garnet
D. cordierite

10. An isograd is a line separating ______?

A. copper from gold
B. two different mineral assemblages formed by transitional different metamorphic conditions.
C. iron from copper
D. sandstone from limestone

Class 10 - Quiz

1. Which of the following is the most likely to be a result of plastic deformation?

A. a joint set

B. a reverse fault
C. a recumbent fold

D. a breccia zone

2. If the fold axis of a syncline strikes northeast, and I am standing on the southeast limb, which direction would I find younger rocks?

A. southeast

B. northeast

C. southwest

D. northwest

3. An overturned fold with a south-dipping axial plane might best be explained by ______.

A. vertical tectonics

B. compressional forces from the south

C. compressional forces from the west

D. east-west shearing

4. Horizontal slickensides on a vertical fault plane suggest it is a ______fault.

A. normal fault

B. reverse fault

C. oblique slip fault

D. strike-slip fault

5. A gold-quartz vein strikes due north and dips 60 degrees west. The vein is cut off by an east-west vertical fault which is downdropped to the north. Where is the continuation of the vein on the north side of the fault?

A. to the east
B. to the west
C. to the south
D. to the southwest

6. Which of the following does not cause joints to form in rocks?

A. cooling of volcanic rocks

B. uplift and erosion

C. folding

D. oxidation

7. Which of the following could explain the presence of a northeast-striking fractures?

A. folds with northeast-trending axes

B. folds with northwest-trending axes

C. glaciation

D. a subsurface pluton trending northwest-southeast

8. Which setting is least likely to produce open fractures where veins could form?

A. a thrust fault zone
B. broad, open folds
C. intrusion of a granite pluton and arching of the overlying rocks
D. a series of normal faults

9. Which is an example of a pre-mineral structural feature?

A. a strike-slip fault which offsets a galena-quartz vein
B. an anticlinal fold which deforms shale containing disseminated sphalerite
C. a fault with breccia containing a matrix of quartz-arsenopyrite

D. an overturned syncline containing a massive sulfide lens consisting of deformed pyrites

10. Which of the following is not proof of faulting?

A. breccia
B. veining
C. slickensides
D. gouge

Class 11 Quiz

1. Which of the following is an example of mechanical weathering?

A. humic acid from plants decomposing limestone.

B. root systems in jointed granite.
C. decomposition of pyrite forming acid mine waters.

D. zinc dispersion by groundwater in soil.

2. Which of the following is an example of a resistate mineral with a high specific gravity?

A. diamond

B. garnet

C. zircon

D. ilmenite

3. Which method would works best to separate black sand from gold and other heavy minerals?

A. using a sieve screen

B. using a magnet

C. panning

D. using tweezers

4. Which of the following is most likely to occur as an impurity in a gold nugget?

A. native silver

B. pyrite

C. magnetite

D. cobalt

5. Which mineral is the most easily winnowed?

A. garnet
B. quartz
C. scheelite
D. pyrite

6. Assuming the following placer gold samples were collected in the same creek and were derived from the same source, which traveled the furthest downstream?

A. fineness = 945

B. fineness = 860

C. fineness = 952

D. fineness = 886

7. Which of the following would form the best velocity shadow in a stream environment?

A. a 2 foot quartzite boulder

B. a 5 pound grayling

C. an alder branch

D. a 3 foot granite boulder

8. Which of the following is not a quality of gold which causes it to accumulate in placers?

A. it has a high specific gravity
B. it is malleable
C. it is conductive

9. Natural riffles on the bedrock floor of a stream might be formed by ______?

A. quartzite layers striking parallel to the stream axis
B. thin dikes parallel to the stream axis
C. thin dikes perpendicular to the stream axis

D. chlorite schist layers striking parallel to the stream axis

10. Gemstones such as diamonds and sapphires sometimes form placers because ______?

A. of their high density
B. of extreme hardness
C. they are rather inert
D. both B and C above

Class 12 - Quiz

1. Which of the following is an example of secondary dispersion?

A. anomalous zinc values in soils.

B. anomalous arsenic values in granite hosting a gold-quartz vein.
C. anomalous copper values in breccia associated with a VMS deposit.

D. anomalous bismuth in samples of pegmatite.

2. Which of the following is an example of primary dispersion?

A. anomalous copper values in stream sediments.

B. anomalous antimony values in soils.

C. black sand in a pan concentrate sample.

D. anomalous molybdenum values in granite.

3. Which of the following locations would be best to search for silts for a stream sediment sample?

A. a waterfall.

B. a dry stream channel adjacent to the active stream.

C. an area containing lots of cobble size material.

D. a place in the active stream with a slower current.

4. Which of the following can serve to filter silt from the stream in steep areas?

A. algae.

B. moss.

C. alders.

D. spruce.

5. If a threshold value for copper in soils is 180 ppm, which of the following is considered an anomalous value?