MIDTERMS - Day 2 Questionnaire (Batch 1) Flashcards
Which of the following is purely covalent?
a. Galena
b. Diamond
c. Halite
d. Corundum
b. Diamond
Which is not a silicate?
a. Gypsum
b. Feldspar
c. Pyroxene
d. Olivine
a. Gypsum
Pyrite is under what group of minerals:
a. Carbonates
b. Sulfates
c. Sulfides
d. Oxides
c. Sulfides
The following elements are alkali metals, EXCEPT:
a. Sodium
b. Lithium
c. Cesium
d. Calcium
d. Calcium
The third most abundant element in the earth’s crust:
a. Iron
b. Calcium
c. Aluminum
d. Sodium
c. Aluminum
Which is the most abundant element in the entire earth?
a. Iron
b. Calcium
c. Aluminum
d. Sodium
a. Iron
How many oxygen atoms are linked in the silica tetrahedron?
a. 1
b. 2
c. 3
d. 4
d. 4
What is the valence of the silica tetrahedron?
a. -2
b. -4
c. -6
d. -8
b. -4
It is the linking of silica tetrahedrons:
a. polarization
b. synthesization
c. polymerization
d. crystallization
c. polymerization
Who is the father of mineralogy?
a. Hutton
b. Agricola
c. Berzelius
d. Dana
b. Agricola
The book that is believed to be the first scientific attempt to mineral classification.
De re metallica (On minerals, 1556)
He used X-rays to determine the internal structure of crystals.
a. Agricola
b. Berzelius
c. Dana
d. Bragg
d. Bragg
Which is a nonmetal native element?
a. Au
b. Ag
c. S
d. Pt
c. S
Which mineral is a titanium dioxide?
a. Chromite
b. Pentlandite
c. Rutile
d. Corundum
c. Rutile
Halides commonly occurs as:
a. native elements
b. oxidation products
c. accumulations in marine settings
d. evaporites
d. evaporites
Island silicates are also known as:
a. sorosilicates
b. nesosilicates
c. inosilicates
d. tektosilicates
b. nesosilicates
- Oxygen to silicon ratio of sorosilicates:
a. 4:1
b. 7:2
c. 3:1
d. 11:4
b. 7:2
The type of silicate with 2:1 oxygen to silicon ratio:
a. phyllosilicate
b. cyclosilicate
c. tectosilicate
d. inosilicate
c. tectosilicate
It is the common example of double chain silicates:
a. pyroxene
b. amphibole
c. zeolite
d. micas
b. amphibole
The iron end-member of the olivine group:
a. fayalite
b. forsterite
c. enstatite
d. augite
a. fayalite
The following minerals are under pyralspite series of the garnet group, EXCEPT:
a. andradite
b. pyrope
c. almandine
d. spessartine
a. andradite
Tremolite and actinolite are examples of:
a. garnets
b. pyroxenes
c. amphiboles
d. feldspathoids
c. amphiboles
What is the cleavage angle of amphiboles?
a. 87 and 93
b. 60 and 120
c. both 90 degrees
d. none of the above
b. 60 and 120
An atom is determined by the number of:
a. neutrons
b. electrons
c. protons
d. positrons
c. protons
Valence electrons are:
a. inner electrons
b. electrons in the nucleus
c. outer electrons
d. negatively charged
c. outer electrons
- The property of a metal that it can be stretched into thin wires:
a. malleable
b. sectile
c. brittle
d. ductile
d. ductile
The property of a metal that it can be pounded into thin sheets
a. malleable
b. sectile
c. brittle
d. ductile
a. malleable
Alkali metals are under what group?
a. Group IA
b. Group IIA
c. Group IIIA
d. Group IVA
a. Group IA
Alkaline earth metals are under what group?
a. Group IA
b. Group IIA
c. Group IIIA
d. Group IVA
b. Group IIA
The B groups are also known as:
a. Lanthanide series
b. Actinide series
c. Transition metals
d. Metalloids
c. Transition metals
Avogadro’s number is equal to:
a. 6.022 x 10^21 atoms
b. 6.022 x 10^22 atoms
c. 6.022 x 10^23 atoms
d. 6.022 x 10^24 atoms
c. 6.022 x 10^23 atoms
Isotopes have different numbers of:
a. protons
b. electrons
c. neutrons
d. atoms
c. neutrons
Bonding due to the sharing of electrons by adjacent atoms.
a. Ionic
b. Covalent
c. Metallic
d. Hydrogen
b. Covalent
Bonding due to the attraction between positively charged ions and negatively charged ions – opposites attract
a. Ionic
b. Covalent
c. Metallic
d. Hydrogen
a. Ionic
Who is the father of mineralogy?
Georgius Agricola
He first developed the mineral classification system used today.
Jons Jacob Berzelius
He refined the classification system of Berzelius into eight main mineral groups.
James Dana
It is the largest group of minerals in the Earth’s crust.
Feldspar Group
Anhydrite, gypsum, barite are under what class?
Sulfates
Island silicates are also known as _________________.
Nesosilicates
Chain silicates are also known as _______________.
Inosilicates
Pyroxene is a type of what specific silicate group?
Single-Chain Inosilicates
A granite sample contains a pink mineral with tabular habit and pearly luster. What mineral is this?
a. quartz
b. orthoclase
c. plagioclase
d. muscovite
b. orthoclase
Which of the following is NOT a monomineralic rock?
a. Dunite
b. Anorthosite
c. Granite
d. Limestone
c. Granite
Bricks are rectangular blocks of fired clay, concrete, or other materials that are used for construction. Do bricks qualify as rocks?
a. Yes, because it is coherent.
b. Yes, because it is an aggregate of naturally occurring materials.
c. No, because it is not formed naturally.
d. No, because it is not homogeneous.
c. No, because it is not formed naturally.
According to the estimation made by Clarke and Washington, the lithosphere consists
a. 80% igneous rocks
b. 85% igneous rocks
c. 90% igneous rocks
d. 95% igneous rocks
d. 95% igneous rocks
They believed that all rocks were derived by the processes of chemical precipitation from ocean.
a. Neptunists
b. Vulcanists
c. Plutonists
d. Terrestrialists
a. Neptunists
The vulcanists idea about the origin of rocks was led by:
a. Abraham Gottlob Werner
b. James Hutton
c. William Smith
d. Victor Goldschmidt
b. James Hutton
The branch of geology dealing with the description and systematic classification of rocks by microscopic examination of thin sections
a. Petrology
b. Petrogenesis
c. Petrography
d. Mineralogy
c. Petrography
Which of the following rocks is NOT formed by the cooling, crystallization, and solidification of magma?
a. Dolerite
b. Quartzite
c. Gabbro
d. Diorite
b. Quartzite
Dolerite is a/an:
a. plutonic
b. volcanic rock
c. extrusive rock
d. hypabyssal rock
d. hypabyssal rock
Chondrites and achondrites are two types of:
a. stony iron meteorites
b. iron meteorites
c. stony meteorites
d. micrometeorites
c. stony meteorites
Iron meteorites show a distinct texture called a ___________. This results from slow cooling of a very hot solid material
a. Chondritic texture
b. Achondritic texture
c. Widmanstätten pattern
d. Metallic texture
c. Widmanstätten pattern
Railway tracks made from steel are laid on aggregate called a:
a. slag
b. boulder
c. gabion
d. ballast
d. ballast
Which of the following is a melanocratic rock?
a. granite
b. basalt
c. rhyolite
d. pegmatite
b. basalt
A crystallite in the form of a rods or needle with divergent plumes.
a. Longulites
b. Globulites
c. Margarites
d. Scopulites
d. Scopulites
When globulites are aligned like string of beads, the resulting form is called
a. Longulites
b. Margarites
c. Scopulites
d. Trichites
b. Margarites
The rocks exhibiting this texture are entirely made up of glassy matter or non-crystalline matter (like crystallites and microlites).
a. Holohyaline
b. Hemicrystalline
c. Merocrystalline
d. Holocrystalline
a. Holohyaline
Which of the following is holohyaline?
a. Granite
b. Gabbro
c. Dolerite
d. Nephelinite
d. Nephelinite
Medium grained texture is defined as having a size range of:
a. <1mm
b. 1-5mm
c. 3mm-5cm
d. >3 cm
b. 1-5mm
A texture describing majority of grains with euhedral shape.
a. panidiomorphic texture
b. hypidiomorphic texture
c. xenomorphic texture
d. allotriomorphic texture
a. panidiomorphic texture
A subtype of equigranular texture where grains are very fine or microcrystalline or cryptocrystalline
a. microgranitic
b. orthophyric
c. felsitic
d. poikilitic
c. felsitic
A subtype of porphyritic texture where phenocrysts are clubbed together and form distinct clusters of crystals or crystal aggregates
a. vitrophyric
b. felsophyric
c. glomeroporphyritic
d. seriate
c. glomeroporphyritic
In a poikilitic texture, the enclosed crystals are known as:
a. oikocryst
b. chadocrysts
c. phenocrysts
d. microcrysts
a. oikocryst
What is an ophitic texture?
a. Augite encloses smaller laths of plagioclase feldspar
b. Plagioclase feldspar encloses smaller laths of augite
c. Plagioclase grains are completely surrounded by the glass.
d. Glass are completely surrounded by plagioclase.
a. Augite encloses smaller laths of plagioclase feldspar
When the corners of randomly oriented plagioclase laths touch each other to form a network and the polygonal interstitial spaces are filled-up by glass or its devitrified product, the texture is known as:
a. intergranular
b. intersertal
c. graphic
d. myrmekitic
c. graphic
Results from the intergrowth of quartz and plagioclase (usually oligoclase). The intergrowth of quartz is in the form of worm-like rods within the plagioclase.
a. Graphic
b. Granophyre
c. Myrmekitic
d. Corona
c. Myrmekitic
If “Fool’s Gold” refers to Pyrite, then “Black Jack” refers to _______.
A) Galena
B) Bornite
C) Sphalerite
D) Pyrite
C) Sphalerite
The following are varieties of corundum except _______.
A) Emery
B) Sapphire
C) Ruby
D) Emerald
D) Emerald
The only non-metallic mineral with a specific gravity similar to those of metals is ________.
A) Alunite
B) Barite
C) Anhydrite
D) Malachite
B) Barite
