Transcribed Image Text: Figure 3.23 Selected net nonfuel mineral re-
source imports by the United States.
2018 U.S. NET IMPORT RELIANCE ON SELECTED NONFUEL MINERAL COMMODITIES
ORE MINERAL
or
RAW MINERAL
COMMODITY
(Element, Ore, or
Raw Mineral)
fluorine ore (F):
fluorspar
graphite (C)
indium metal (In)
mica (sheet)
quartz crystal
(industrial)
niobium metal (Nb,
"columbium")
tantalum metal
(Ta)
gallium metal (Ga)
vanadium metal (V)
bismuth metal (Bi)
zinc metal (Zn)
barium metal ore
(Ba)
chromium metal
(Cr)
silver metal (Ag)
aluminum (AI)
nickel metal (Ni)
tungsten metal (W)
garnet (industrial)
copper metal (Cu)
magnesium metal
(Mg)
salt
iron metal (Fe),
steel
cement
gypsum
sulfur (S)
fluorite
graphite
sphalerite with In
as an impurity
muscovite
quartz (clear
transparent)
columbite (in
"coltan")
tantalite (in
"coltan")
bauxite is Ga ore
magnetite with V
as an impurity
galena with Bi as
an impurity
sphalerite is an ore
of Zn
barite
chromite is an ore
of Cr
native silver; galena with
Ag as an impurity
bauxite is Al ore
pyrrhotite contains Ni as
an impurity
wolframite is W ore
garnet
azurite, bornite,
chalcopyrite, chrysocolla,
and malachite are cu ores
dolomite and
olivine are Mg ores
halite
• 11
goethite, limonite
magnetite, and hematite
are Fe ores
calcite
gypsum
native sulfur;
pyrite is a Sore
Percent
Import
Reliance
100
100
100
100
100
100
100
100
100
96
85
>75
69
62
61
59
>50
46
33
<25
23
18
13
12
6
WHAT IS THIS COMMODITY USED FOR?
Fluorine is used in fluoride toothpaste, fluorocarbon refrigerant gases and fire
extinguishers, and fluoropolymer plastics that coat nonstick fry pans and
insulate wiring in cell phones, laptops, and airplanes.
Graphite is used to make carbon steel, pencils, carbon fiber reinforced plastics
in car bodies, and negative ends of most batteries (including those in all cell
phones, power tools, computers, and hybrid/electric vehicles).
Indium is used to make solar cells and liquid-crystal displays (LCDs) in cell
phones, computers, and flat-screen television sets.
Muscovite is used in heating elements of hair dryers and toasters, joint
compound, and cosmetics with a satiny or glittery sheen.
Crystals of cultured pure quartz are used to make quartz watches and the
frequency controls and timers in every computer and cell phone.
Niobium is used to make high-strength noncorrosive steel alloys (for jet engines,
power plants) and arc welding rods, plus electrical insulation coatings in cell
phones, computers, and electronic games.
Tantalum is used to make "tantalum capacitors" that buffer the flow of
electricity between a battery and electronic parts in the circuits of cell
phones, laptops, iPods, and most other electrical devices.
Gallium is used to make light-emitting diode (LED) bulbs and liquid-crystal
displays (LCDs) in things like cell phones, computers, and flat-screen television
sets.
Vanadium is used for cutting tools; mixed with iron to make lightweight
shock-resistant steel for car axles and gears, springs, and cutting tools.
Bismuth is used as a nontoxic replacement for lead (in ceramic glazes, fishing
sinkers, food processing equipment, plumbing, and shot for hunting) and in
antidiarrheal medications.
Zinc is used to make alloys like brass, skin-healing creams, and galvanized
(rust-proof) steel and roofing nails; added to vitamin pills for a healthy
immune system and to aid protein production.
Barium (Ba) is widely used to make capacitors (that store energy) and
memory cells in cell phones and other portable electronic devices.
Chromium is used to make stainless steel, yellow and green ceramic glazes and
paints, and military camouflage paints; added to vitamin pills for healthy
metabolism and lower cholesterol levels.
Silver is used to make jewelry and silverware, photographic film, and solder on
electrical circuit boards of computers and cell phones.
Aluminum is a lightweight silvery metal used to make drink cans, foil, airplanes,
and solar panels.
Nickel is used to make rechargeable batteries (Ni-Cd) for portable electronic
devices, screw-end caps of light bulbs, and stainless steel.
Tungsten is a dense metal that makes cell phones and pagers vibrate (by
attaching it to an electric motor spinning off center); also used for light bulb
filaments, golf clubs, and tungsten carbide cutting tools.
Industrial garnet is used as an abrasive in things like sandpaper and
sandblasting.
Copper is used to make copper pipes; electrical wire for homes, businesses,
electric motors, and circuit boards in cell phones and other electrical devices.
Hybrid cars contain about 100 pounds (45 kg) of copper. Added to vitamin
pills for healthy hair and skin.
Magnesium is used to make strong, lightweight frames for jet engines and
rockets, lightweight cell phone and laptop cases, and incendiary flares and
bombs; added to vitamin pills to aid good brain and muscle function and
strengthen bones.
It is used as table salt, road salt (to melt snow), in water softeners, and as a
food preservative.
Iron and steel are used to construct machines, buildings, bridges, nails, bolts,
tools, file cabinets; iron is added to vitamin pills to aid hemoglobin production
in red blood cells for oxygen transport.
Calcite is processed into cement, which is used to make concrete.
Gypsum is used to make plaster of paris, drywall, and for art (alabaster).
It is used to make matches, gunpowder, fertilizer, fungicide, insecticide, and
harden rubber (car tires).