Statement: the surface of the mineral when it breaks is irregular therefore, it does not
have cleavage. - ️️interpretation/ inference
which of these statements is true for the physical property cleavage? - ️️it reflects
planes of weakness in the atomic structure
Which physical property ...
GLY 3202 C- Module 2 Quiz
Statement: the surface of the mineral when it breaks is irregular therefore, it does not
have cleavage. - ✔️✔️interpretation/ inference
which of these statements is true for the physical property cleavage? - ✔️✔️it reflects
planes of weakness in the atomic structure
Which physical property is a measure of how resistant mineral crystals are to being
scratched? - ✔️✔️hardness
which physical property describes the shape in which individual mineral crystals grow? -
✔️✔️Habit
true or false? there are alternative quantitative analytical methods to the petrographic
microscope for identifying minerals. - ✔️✔️true
which of these statements is true for the physical property of hardness? - ✔️✔️it is a
quantitative property
which physical property is described using the following terms?
vitreous
pearly
dull - ✔️✔️luster
which term best describes a vitreous luster? - ✔️✔️glassy
a mineral breaks into perfectly formed cubes. what is the correct description for this
observation? - ✔️✔️three perfect cleavages all at 90 degrees to each other.
a mineral can be scratched by materials with a hardness of 8 and 9, but cannot be
scratched by materials with a hardness of 6 or 7, on Mohs Scale. what is the hardness
of the mineral? - ✔️✔️7
which class of minerals can be identified using the "acid test"? - ✔️✔️carbonate
minerals
a mineral is described as being opaque. is it more likely to be metallic or non-metallic? -
✔️✔️metallic
which of the crystal habits shown in the diagram represents a stubby/columnar habit? -
✔️✔️E) looks like a middle thick-ness rectangle
(not elongated)
, what is an inference/interpretation? - ✔️✔️a relatively subjective conclusion based on
analysis of information.
true or false? an observation may be qualitative or quantitative. - ✔️✔️true.
classify this statement about an unknown mineral as an observation, interpretation,
hypothesis or theory.
classify this statement about an unknown mineral as an observation, interpretation,
hypothesis or theory.
statement: based on its vitreous luster, I think the mineral might be a silicate. -
✔️✔️Hypothesis
which physical property describes how mineral crystals break into smaller pieces? -
✔️✔️cleavage/fracture
which physical property describes how mineral crystals grow together? -
✔️✔️aggregation
which of these statements is true for the physical property luster? - ✔️✔️it is a
qualitative property
what causes opalescence or labradorescence? - ✔️✔️transmission of light through
microscopic internal layering.
what are the units of specific gravity (SG)? - ✔️✔️there are no units. SG is
dimensionless.
Thanks for the fakeout Dr. Smith
a mineral can only be scratched by materials with a hardness of higher than 1 on Mohs
Scale. What is the hardness of the mineral? - ✔️✔️1
a mineral crystal transmits most of the incident light. what is the correct description for
this observation? - ✔️✔️translucent
a mineral is described as metallic. which of the following groups of minerals could this
mineral belong to? - ✔️✔️oxides
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