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Earth Science Reference Table #mineral practice
Flashcards
28 cards
F
Practice quiz
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Host live
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Questions
28
Answers
1
Which mineral cleaves in 4 directions?
Galena
Quartz
Calcite
Fluorite
2
A human fingernail has a hardness of 2.5. Which 2 minerals are softer than a human fingernail?
Graphite and talc
Sulfur and fluorite
Calcite and halite
Pyrite and magnetite
3
Which mineral cleaves at 56
o
and 124
o
?
Pyroxene
Olivine
Selenite gypsum
Amphibole
4
This sample is a brassy yellow color, displays fracture, and has a green-black streak
Pyrite
Magnetite
Hematite
Galena
5
Which mineral is composed of Calcium and Fluorine?
Calcite
Fluorite
Amphibole
Hematite
6
Which mineral is composed of only one element, has fracture, and shows a white-yellow streak?
Graphite
Quartz
Hematite
Sulfur
7
Which mineral property is best illustrated by the samples?
Hardness
Cleavage
Density
Streak
8
Which mineral is found in pencil lead?
Magnetite
Graphite
Galena
Pyrite
9
Which property is the
least effective
for identifying a mineral?
Hardness
Color
Size
Cleavage/fracture
10
This mineral is commonly green in color, has a high hardness, and has fracture
Olivine
Pyrite
Amphibole
Pyroxene
11
What is a mineral?
An organic solid that does not occur naturally
An inorganic solid that does not occur naturally
An inorganic solid that occurs naturally
An organic solid that occurs naturally
12
Which mineral is the main component of drywall?
Muscovite mica
Talc
Calcite
Selenite gypsum
13
Which mineral is composed of sodium and chlorine?
Halite
Calcite
Quartz
Potassium feldspar
14
The internal atomic structure of a mineral most likely determines the mineral's
Color, streak, and age
Hardness, cleavage, and crystal shape
Origin, exposure, and fracture
Size, location, and luster
15
Which mineral cannot scratch glass but can scratch a copper penny?
Quartz
Talc
Fluorite
Diamond
16
Which mineral is either metallic silver or earthy red and produces a red-brown streak?
Hematite
Galena
Garnet
Graphite
17
Which mineral is used in ceramics and is commonly called orthoclase?
Pyroxene
Potassium feldspar
Plagioclase feldspar
Olivine
18
This mineral is flexible in thin sheets, has a hardness of 2-2.5, and is colorless to yellow
Muscovite mica
Talc
Biotite mica
Plagioclase feldspar
19
The physical and chemical properties of a mineral are a result of
Size
Cleavage
Hardness
The internal arrangement of atoms
20
The resistance of a mineral being scratched is known as
Streak
Cleavage
Fracture
Hardness
21
What is the definition of streak?
The color of a mineral in its powdered form
The way in which a mineral breaks
The way in which light is reflected off a minerals surface
The ability of a mineral to scratch an object
22
Which mineral cleaves in 2 directions at 90
o
, and is black to dark green in color?
Pyrite
Amphibole
Pyroxene
Fluorite
23
The relative hardness of a mineral can be tested by
Breaking the mineral with a hammer
Determining the density of the mineral
Scratching the mineral across a glass plate
Squeezing the mineral with calibrated pliers
24
Which mineral is used in electronics and shows fracture?
Quartz
Potassium feldspar
Olivine
Fluorite
25
Which mineral has a metallic luster, a black streak, and is an ore of iron?
Pyroxene
Galena
Magnetite
Graphite
26
Luster is defined as
How shiny a mineral is
The way a mineral breaks on its weakness planes
How dull a mineral looks
The way in which light is reflected from the mineral surface
27
Which two minerals bubble when HCl acid is poured on them?
Quartz and dolomite
Sulfur and fluorite
Sulfur and calcite
Calcite and dolomite
28
What do the properties (streak, hardness, etc) help us find?
The origins of the mineral
The size of the mineral
The texture of the mineral
The identity of the mineral
