Core 3 Flashcards by Gregorio Mahinay III

What is the age of the Earth?
a. 4.5 Billion years
b. 6.5 Billion years
c. 3.8 Billion years
d. 10 Billion years

a. 4.5 Billion years

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What do you call the luster of diamonds?
a. Pearly
b. Resinous
c. Vitreous
d. Adamantine

d. Adamantine

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What do you call the process of grinding wherein very small amount of grinding media is used? The process makes use of the ore feed as bulk grinding medium.
a. Rod Mill grinding
b. Autogenous grinding
c. Semi-autogenous grinding
d. Pebble grinding

c. Semi-autogenous grinding

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A theory by Alfred Wegener which states that today’s continents were once joined together into one large land mass.
a. Continental Drift
b. Theory of Plate Tectonics
c. Uniformitarianism
d. Diastrophism

a. Continental Drift

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That part of the crusher that determines the maximum size that will enter the crusher.
a. Set
b. Gape
c. Throw
d. Nip

b. Gape

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How many Sustainable Development Goals are there?
a. 15
b. 16
c. 17
d. 18

c. 17

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Chemical formula for Orthoclase.
a. (Mg, Fe)₂SiO₄
b. SiO₂
c. KAlSi₃O₈
d. Al₂O₃

c. KAlSi₃O₈ (Orthoclase)

a. (Mg, Fe)₂SiO₄ (Olivine)
b. SiO₂ (Quartz)
d. Al₂O₃ Corundum

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What law states that the energy consumed in grinding is proportional to the new surface area created is?
a. Rittinger’s Law
b. Bond’s Law
c. Kick’s Law
d. Hukki’s Law

a. Rittinger’s Law

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In ball milling, the ball charge starts to centrifuge when the…
a. Critical speed is not reached.
b. Critical speed is reached.
c. Volume more than 80%
d. Volume is less than 80%

b. Critical speed is reached.

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This is the process when a solid directly turns into a gaseous state.
a. Condensation
b. Liquidation
c. Sublimation
d. Evaporation

c. Sublimation

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Which of the following is a necessary reactant in gold leaching with sodium cyanide?
a. Air
b. Water
c. Nitrogen
d. Oxygen

d. Oxygen

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A chemical reagent and is heteropolar in nature; the polar part of it has an affinity for water and the non-polar part has an affinity for gas or repulsion for water.
a. Frother
b. Collector
c. Activator
d. Flocculant

a. Frother

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The purpose of close circuit grinding is?
a. Reduce energy consumption
b. Reduce oversize in the product
c. Prevent over grinding
d. Lengthen the residence time of the ore inside the mill

b. Reduce oversize in the product

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The property of rocks whereby they break along approximately parallel surface is called:
a. Schistosity
b. Foliation
c. Gneissosity
d. Cleavage

b. Foliation

Schistosity: This is a specific type of foliation characterized by the parallel alignment of visible, flaky mineral grains, such as mica, which allows the rock (schist) to split into thin sheets. Cleavage is a broader term that can include schistosity.
Foliation: This is a general term for any planar or layered fabric in a metamorphic rock, caused by the parallel alignment of mineral grains. Cleavage is a specific result or type of foliation, describing the way a rock breaks.
Gneissosity: This is a type of foliation that is specific to gneiss, a high-grade metamorphic rock. It is defined by distinct alternating bands of light- and dark-colored minerals, and the rock may not necessarily break easily along these planes.

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Which of the following are arranged from heaviest to lightest?
a. Cu-Fe-Pb
b. Pb-Cu-Fe
c. Fe-Pb-Cu
d. Cu-Pb-Fe

b. Pb-Cu-Fe

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In relative dating, layers of sediment are generally deposited in a horizontal position. This is useful even if beds of sedimentary rock have been subsequently tilted.
a. Principle of Cross-cutting Relationships
b. Principle of Fossil Succession
c. Principle of Original Horizontality
d. Law of Superposition

c. Principle of Original Horizontality

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The method of separating a mixture of minerals into two or more products in the basis of velocities at which gains will fall through a fluid medium is called?
a. Elutriation
b. Heavy Media Separation
c. Sedimentation
d. Classification

b. Heavy Media Separation

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Heat treatment process where the metal or alloy is cooled very fast after being heated.
a. Tempering
b. Normalizing
c. Annealing
d. Hardening

d. Hardening (Quenching)

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The most common frother used on flotation is?
a. Minerec
b. Ethyl alcohol
c. Pine oil
d. Solid hydrocarbon

c. Pine oil

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In the method of tailing disposal, the dam is raised. This has the advantage of requiring smaller volumes of sand fill to raise crest to any given height. The dam can be raised more quickly and there is more trouble keeping it ahead of the tailings pond during the early stages of construction.
a. Upstream
b. Downstream
c. Centerline
d. Cross Valley

a. Upstream

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Hindered settling refers to which of the following?
a. Settling of materials in the thick pulp
b. Settling of minerals in water
c. Settling of minerals in dilute pulp
d. Settling after agitation

a. Settling of materials in the thick pulp

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The largest division of geologic time is called?
a. Epoch
b. Period
c. Era
d. Eon

d. Eon

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Fluxes are added to the material being smelted to form which of the following?
a. Matte
b. Dross
c. Speiss
d. Slag

d. Slag

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The conditioner used to regulate alkalinity of the pulp is?
a. Sodium cyanide
b. Soda ash
c. Sodium sulfide
d. Lime

d. Lime

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This is referred to as the age of fishes. a. Devonian b. Silurian c. Mississippian d. Permian

a. Devonian

The boundary between the lower mantle and the outer core of the Earth is called? a. Conrad discontinuity b. Repiti discontinuity c. Mohorivicic discontinuity d. Guttenberg discontinuity

d. Guttenberg discontinuity

In ore dressing, sulfide minerals respond mostly readily to? a. Electrical separation b. Gravity concentration c. Leaching d. Flotation

d. Flotation

The flotation process of recovering two or more minerals as separate concentrate where one valuable mineral is selected and floated first, and second valuable mineral is floated from the tailings? a. Bulk flotation b. Selective flotation c. Differential flotation d. Reverse flotation

c. Differential flotation

The large scale deformation of the earth's crust that produces continents, ocean basins, mountain ranges, etc. a. Volcanism b. Tectonism c. Diastrophism d. Orogeny

c. Diastrophism

A crystal fracture that breaks with jagged edges, irregular surface with sharp edges. a. Splintery b. Conchoidal c. Irregular d. Hackly

d. Hackly

The product of a sulfide roasting plant is normally called: a. Calcine b. Sinter c. Flue dust d. Clinker

d. Clinker

The chemicals used for treating the mineral particles to make them adhere to the air bubbles are called? a. Activators b. Depressants c. Coagulations d. Collectors

d. Collectors

Bronze is an alloy of which metals? a. Zinc and Copper b. Copper and Tin c. Copper and Nickel d. Zinc and Iron

b. Copper and Tin

Which of the following is a mafic extrusive rock? a. Dacite b. Andesite c. Basalt d. Diorite

c. Basalt

A basic drainage pattern forming branches like trees. a. Dentritic b. Radial c. Trellis d. Rectangular

a. Dentritic

States that the physical and chemical processes that have acted throughout geologic time are the same process that are observable today. a. Plate tectonics b. Uniformitarianism c. Catastrophism d. Continental Drift

b. Uniformitarianism

Which of the following international treaties aims to reduce the emissions of Greenhouse Gases? a. Montreal Protocol b. Paris Agreement c. Kyoto Protocol d. Vienna Convention

c. Kyoto Protocol

If f, c, and t are corresponding metal assays as feed, concentrate, and tails, then the ratio of concentration may be expressed as? a. (c-t)/f b. (c-t)/(f-t) c. (f-t)/(c-t) d. f/(c-t)

b. (c-t)/(f-t)

Avogadro's number is the number of atoms in one gram atom which is? a. 6.023 x 10^32 b. 6.203 x 10^23 c. 6.023 x 10^23 d. 6.0230 x 10^32

c. 6.023 x 10^23

The process of attachment of dissolved metal into activated carbon. a. Absorption b. Adsorption c. Adhesion d. Desorption

b. Adsorption

Bone ash cupel is made from the calcination of animal bones characterized by the presence of organic matte and carbonates, nitrates, etc. which can be decompose at cupellation temperature and is undesirable because of the evolution of gases causing: a. Sprouting b. Splitting c. Spitting d. Spattering

c. Spitting

What is the thickness of the outer core? a. 1,270 km b. 2,850 km c. 2,200 km d. 3,470 km

c. 2,200 km Crust (5-70 km) Mantle (around 2,900 km) Outer Core (about 2,200-2,300 km) Inner Core (approximately 1,200-1,300 km).

Which of the following contains the most percent of copper? a. Chalcopyrite b. Cuprite c. Bornite c. Chalcocite

Cuprite (Cu₂O) contains the highest percentage of copper by mass, approximately 88.8%. a. Chalcopyrite (CuFeS₂) has a copper content of about 34.5%. c. Bornite (Cu₅FeS₄) contains approximately 63.3% copper by mass. d. Chalcocite (Cu₂S) has a copper content of roughly 79.8%.

Fusion is one process in fire assaying where the flux with samples to be analysed for Au are placed in fire assay crucibles and melted in the furnace. What is the required temperature for the process? a. 750 degrees Celcius b. 850 degrees Celcius c. 950 degrees Celcius d. 1050 degrees Celcius

d. 1050 degrees Celcius 1000-1100°C (1832-2012°F)

What is the intrusive equivalent of Rhyolite? a. Granodiorite b. Diorite c. Gabbro d. Granite

d. Granite

What is the solution after reaction of the dore and nitric acid? a. Acidic solution b. Silver chloride solution c. Silver nitrate solution d. Gold chloride solution

c. Silver nitrate solution

A geographical theory developed regarding Earth's geological features which assumes that geological changes were violent, short-lived, large-scale events. a. Catastrophism b. Uniformitarianism c. Volcanism d. Continental Drift Theory

a. Catastrophism

How much is the Copper content of Bornite? a. 66.5% b. 63.3% c. 34.5% d. 79.8%

b. 63.3%

What do you call the tabular plutons that are parallel to the bedding or schistosity of the adjacent rocks? a. Dikes b. Sills c. Laccoliths d. Lopoliths

b. Sills

In fire assaying, if the ore is an oxide and contains copper, what material will the fire assayer add to the charge to prevent the copper from entering the button? a. Soda ash b. Borax c. Sulfur d. Flour

c. Sulfur

One of the following is a base metal: a. Copper b. Palladium c. Platinum d. Silver

a. Copper

Degradation of cyanide at high temperature elution procedures are due to oxygen and: a. Cyanidation b. Polymerization c. Hydrolysis d. Crystallization

c. Hydrolysis

The layer that forms between the slag and the metal after pouring the molten charge. a. Pricipitate b. Flux c. Matte d. Sludge

c. Matte a. Precipitate: A precipitate is a solid that forms from a solution, often in a chemical reaction. While precipitation can occur in metallurgy, it does not refer to a distinct molten layer between slag and metal. b. Flux: A flux is a substance added to a smelting process to promote fluidity and remove impurities, which then form the slag. The flux is a reactant, not a layer that forms as a product between the slag and the metal. d. Sludge: Sludge is a semi-solid slurry of various materials, often associated with wastewater treatment or other industrial processes. It is not a distinct molten layer that forms in a smelting furnace.

A chemical reaction wherein an element dissolved in a solution is converted into a solid form as another compound. a. Leaching b. Dissolution c. Precipitation d. Solidification

c. Precipitation

After leaching, the dissolved elements transfer to the added activated carbon through one of the following processes. a. Stripping b. Elutriation c. Absorption d. Adsorption

c. Absorption

The biggest single deposit of refractory chromite in the Philippines. a. Zambales b. Palawan c. Samar d. Surigao

a. Zambales

What is used in the heavy media separation of chromite? a. Ferrosilicon b. Ferrochromium c. Silicon d. Magnetite

a. Ferrosilicon a. Ferrosilicon and d. Magnetite. Explanation Heavy media separation (HMS) is a gravity-based method of mineral processing that uses a suspension of fine, heavy powders in water to create a fluid with a specific density. The ore is introduced into this fluid, and minerals with a density lower than the fluid will float, while those with a higher density will sink, allowing for separation. Chromite has a high density, which makes gravity separation techniques suitable for its beneficiation. The most common heavy media used in this process are finely ground ferrosilicon and magnetite. They are chosen for their high specific gravity and magnetic properties, which allow for easy recovery and reuse of the medium after the separation is complete. A mixture of both can also be used.

This is a branch in metallurgy where essential metals are dissolved from their mineral state in aqueous solution by a dissolving agent then recovering the desired metals until they become saleable in their metallic form or other compound. a. Physical Metallurgy b. Extractive Metallurgy c. Hydrometallurgy d. Chemical Metallurgy

c. Hydrometallurgy

Which of the following by products of PASAR is being sold to Philphos for manufacture of fertilizer? a. Sulfuric acid b. Copper concentrates c. Slag d. Gold tailings

a. Sulfuric acid

In fire assaying, this is usually blue-gray in color nearing galena in composition and is very brittle. a. Lead button b. Matte c. Speiss d. Slag

b. Matte

A stratification which is characterized by a progressive decrease in grain size upward through the bed is called? a. Turbidity currents b. Mudcracks c. Cross bedding d. Graded bedding

d. Graded bedding

It originated from the custom of the assayers of adding silver until the gold was about a fraction of the whole. What ratio is silver to gold do they consider the be necessary for parting? a. 2Ag - 2Au b. 3Au - 1Ag c. 3Au - 2Ag d. 3Ag - 1Au

d. 3Ag - 1Au

The following are reducing agents in fire assaying except: a. Cream of tartar b. Flour c. Charcoal d. Cryolite

d. Cryolite

Some crystals especially those in the hexagonal system, when viewed in the direction of the vertical axis, show starlike rays. a. Asterism b. Play of Colors c. Pleochroism d. Phosphorescence

a. Asterism

According to DAO 2016-08, the WQG for Total Suspended Solids for Class A waterbodies is? a. 24 mg/L b. 50 mg/L c. 65 mg/L d. 80 mg/L

b. 50 mg/L

Which of the following is not a Zinc Ore? a. Calamite b. Smithsonite c. Zincite d. Chrysocolla

d. Chrysocolla

The scorifier slag should be homogenous and glassy. If non-homogenous, it probably contains what? a. uncooked reagent b. undissolved litharge c. unreacted metals d. undecomposed ore

d. undecomposed ore

What is the boiling point of Copper? a. 1,654 deg C b. 1, 856 deg C c. 2, 175 deg C d. 2, 562 deg C

d. 2, 562 deg C

These are little folds sitting upon a major fold. a. Chevron folds b. Echelon folds c. Parasitic folds d. Kink folds

c. Parasitic folds

It is a mass formed by deposition of material about nucleus. Some of these are roughly spherical, whereas others assume great variety of shapes. a. Geode b. Nucleation c. Concentration d. Colloform

c. Concentration

It is the amount committed by proponents for projects or undertaking under the EIA process, as determined by the DENR to pose significant public risk to answer for damage to life, health, property and the environment caused by such risk, or requiring rehab or restoration measures. a. EMF b. EGF c. RTF D. MRF

b. EGF

Ability of minerals to emit light when being crushed, scratched or rubbed. a. Fluorescence b. Phosphorescence c. Thermoluminescence d. Triboluminescence

d. Triboluminescence

In the Moh's Scale of hardness, what is the hardness of Quartz? a. 9 b. 8 c. 7 d. 6

c. 7

Which of the following is the extrusive equivalent of Gabbro? a. Andesite b. Granite c. Basalt d. Diorite

c. Basalt

In Merrill Crowe process of gold cyanidation, the residue used for precipitate the gold is? a. Zinc dust b. Activated carbon c. Lead nitrate d. Borax

a. Zinc dust

Which of the following is the most effective and economical means of neutralizing acid mine drainage? a. treatment with nitric acid with a pH of 6 b. treatment with cyanide c. treatment with lime d. treatment with sulfuric acid with a pH between 4 and 6

c. treatment with lime

This is a volcano-exhalative stratiform deposit that contains virtually high lead, and high proportions of relative to silver than others. It is associated with mafic to ultramafic rocks. What is this type of deposit? a. Cyprus type b. Besshi type c. Kuroku type d. Oko type

a. Cyprus type

The comprehensive and strategic environmental management plan to achieve the environmental management objectives, criteria and commitments including protection and rehabilitation of the disturbed environment during the exploration period. a. Final Mine Rehabilitation and/or Decommissioning Plan b. Environmental Protection and Enhancement Program c. Environmental Work Program d. Environmental Impact Assessment

c. Environmental Work Program

A freshwater body classification intended for primary contact recreation such as bathing and swimming. a. Class A b. Class D c. Class AA D. Class B

D. Class B

A crystal shape that is rounded or imperfect but still shows general characteristic shape of that mineral. a. Euhedral b. Anhedral c. Subhedral d. Bihedral

c. Subhedral a. Euhedral - perfect b. Anhedral - imperfect

A small step or offset on the ground or surface because one side of the fault has moved vertically with respect to the other. a. Net slip b. Fault trace c. Fissure d. Fault scarp

d. Fault scarp

What is the melting point of Gold? a. 965 degrees Celsius b. 1,064 degrees Celsius c. 1,200 degrees Celsius d. 766 degrees Celsius

b. 1,064 degrees Celsius

A long, narrow coral reef roughly parallel to the shore. a. Barrier b, Fjord c. Atoll d. Fringing

a. Barrier

The gangue mineral in a lead-zinc complex ore is? a. Galena b. Siderite c. Sphalerite d. None of the above

b. Siderite

At what layer of the atmosphere the Ozone layer is located? a. Troposphere b. Mesosphere c. Stratosphere d. Biosphere

c. Stratosphere

Which of the following is the economical mineral of Manganese? a. Pyrolusite b. Garnierite c. Smithsonite d. Magnesite

a. Pyrolusite

It is a portion of mine rehabilitation fund, in the amount equivalent to 10% of the total EPEP budget or P5,000,000 whichever is lower, posted to ensure compliance with the approved rehabilitation activities and schedules for a specific mining phase. a. RCF b. EGF c. EMF D. RGF

a. RCF (Rehabilitation Cash Fund)

What is the general term for the order of formation of associated minerals in the succession, one after another? a. Zoning b. Relative dating c. Metallogeny d. Paragenesis

d. Paragenesis

Which of the following is an economic mineral used in the manufacture of fertilizers such as those produced by Philphos? a. Hematite b. Pyrite c. Galena d. Quartz

c. Galena

Which of the following is an economic mineral of Copper in its oxide form? a. Chalcocite b. Cuprite c. Enargite d. Tennantite

b. Cuprite

A CLRF can be in the following forms, except for: a. MRF b. MWTF c. EGF d. FMRDF

c. EGF

A layer of atmosphere that is located between about 80 and 700 km (50 and 440 miles) above Earth's surface. a. Mesosphere b. Stratosphere c. Exosphere d. Thermosphere

d. Thermosphere Troposphere (0–12 km), Stratosphere (12–50 km), Mesosphere (50–80 km), Thermosphere (80–700 km), and Exosphere (700–10,000 km).

What is the crystal form of Pyrite? a. Triclinic b. Hexagonal c. Trigonal d. Isometric

d. Isometric

Which of the following rules aims to provide adequate measures for responsible mining towards ensuring biodiversity conservation and protection including progressive and final rehabilitation of mined-out areas. It is also aims to minimize negative impacts on biodiversity and ensure its conservation of biodiversity. a. DAO 2003-30 b. EO 79 series of 2012 c. DAO 2022-04 d. EO 270 series of 2004

c. DAO 2022-04

What do you call those mineral deposits that were formed by water action that brought the minerals from a higher source, carried downstream and deposited the same in a favorable space along the sides of creeks or rivers. a. Placer deposits b. Supergene deposits c. Lode deposits d. Evaporites

a. Placer deposits

Which of the following refers to water that is trapped during the formation of sedimentary deposits? a. Connate water b. Meteoric water c. Magmatic water d. Juvenile water

a. Connate water

Radiating individuals terminating in round kidney-shaped masses of crystals. a. Botryoidal b. Mammillary c. Globular d. Reniform

d. Reniform

According to DAO 2016-08, the WQG for Mercury for Class B waterbodies is? a. 0.001 mg/L b. 0.002 mg/L c. 0.003 mg/L d. 0.004 mg/L

a. 0.001 mg/L

The most widely used collectors are? a. Thiosulfates b. Sodium sulfides c. MIBC d. Xanthates

d. Xanthates

Two axes at 90 degrees, plus one axis at a different angle, all of different length. a. Triclinic system b. Orthorhombic system c. Monoclinic system d. Cubic system

c. Monoclinic system

Core 3 Flashcards

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