29 Questions
What is a naturally occurring inorganic compound with an orderly internal structure and a definite chemical composition?
Mineral
What is a production opening in a metal mine?
Stope
What type of ore deposits were formed subsequently with the host rock?
Epigenetic
What is the percent increase in volume occupied by a given mass of solid material after it has been blasted or broken?
Swell factor
What is the freeing or detaching of large masses of harder rock from a parent deposit?
Rock Breakage
What is the color of a mineral in its powdered form?
Streak
What is the term used to describe the lowering of strata, including the surface, due to underground excavation?
Subsidence
Which mineral is the most common in the earth's crust?
Feldspar
What is the term used to refer to the working face?
Inby
What is the horizontal movement of materials called?
Heave
What is the term used to describe accumulated excreta and remains of birds and bats?
Gauno
What is the angle of inclination of a deposit, measured from the horizontal?
Grade
What is the term for a distinct pause or pre-determined time between detonation or initiation impulses?
Delay element
What is the term for a downthrown block bounded by parallel normal faults?
Horst
What is the name of the crystalline variety of the mineral Gypsum?
Selenite
What is the term for the wall or rock under the vein?
Footwall
Which of the following minerals is non-magnetic?
Sphalerite
What is the term for the portion of the deposit overlying an excavation and left in place as a pillar?
Crown pillar
What is the term for the physical weight ratio of blasting agent to the material blasted?
Powder factor
What is the term used to describe a mineral that can be readily crushed into fine powder?
Brittle
What is the term for a central vent or close group of conduits where heated rock materials emerge from the interior of the earth?
Caldera
What is the minimum economic value of ore required to make it worth extracting?
Cut-off grade
What type of fault is characterized by the hanging wall moving up relative to the footwall?
Thrust fault
What term is used to refer to the direction of extraction away from the working face and toward the entrance?
Outby
What is the instrument used for recording the vibrations of the earth's crust?
Seismograph
What is the term for a crystal appearance resembling slender plant-like branches?
Dendritic
What is the vertical measurement of the blasting agent in the blast hole?
Subdrill
What is the term for a crystal that has replaced another mineral's chemistry or structure with its own without changing the outward shape of the original mineral?
Pseudomorph
What is the term for the failure of a charge to explode when expected?
Misfire
Test your knowledge of geology and mining terminology with this exam. Identify the correct terms for naturally occurring compounds, production openings, and ore deposits. Improve your understanding of the field with this quiz.
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