Introduction
1. Overview of Physical Geology
2. Rock Identification Methods
Geologic Principles
3.

Maps & Navigation
Geologic Maps
4. Igneous Rocks
Magmatic Deposits
5. Plutonic-Related Deposits
Air Photos
6. Volcanic Rocks
Volcanic-Related Deposits
7. Sedimentary Rocks
Low Temp. Deposits
GPS Navigation
8. Hydrothermal Veins&
Alteration
9. Metamorphic Rocks
Metamorphic Deposits
10.

Structural Geology
Structural Controls on
Mineralization
** Mid Term
11. Mechanical Erosion
Placer Deposits
12. Geochemical Sampling Methods
13. Adit/Trench Mapping
Geochemical Methods
14. Geophysical Methods
15. Project Planning
Claim Staking
16. Exploration Drilling
Methods
** Final Exam

 

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.  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