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Finding Gold
By Anne
Marie Helmenstine, Ph.D
Where To Find Gold To Recycle and Use
Gold
is the only element with the color that bears its name.
It's a soft, ductile metal
that is an excellent conductor of heat and electricity.
It's also one of the noble
metals, which means it resists corrosion, making it safe for jewelry and even
to eat (in small amounts).
While it's certainly possible
to pan for gold, you may be surprised at all the everyday items you use that
contain gold.
Here's a list of places to
look to find gold. You can use use it, recycle it, or sell it.
Get Gold
from Computers and Smartphones
If
you're reading this article online, your using an item that contains a
significant amount of gold.
The processors and connectors
in computers, tablets, and smartphones use gold. You can also find gold in
televisions, gaming consoles, printers... anything electronic.
With a little know-how, you
can recover this gold, although I'll let the details for you to find on
YouTube, since the process typically involves burning the electronics to a
crisp and using cyanide or acid to separate the gold.
It's not particularly
environmentally friendly, but it's effective.
Now, you may be asking
yourself why gold is used in electronics, rather than copper, which is more
affordable, or silver, which is a superior electrical conductor.
The reason is that copper
isn't really up to the task, while silver corrodes too quickly.
Since most electronics only
last a few years, there is a trend toward using silver anyway, so if you're
after gold, it's best to use older electronics rather than new ones.
Gold in
Smoke Detectors
Before
you throw out an old smoke detector, you might want to check it for gold!
Many smoke detectors contain
another interesting element you can retrieve: radioactive americium.
The americium will bear a
small radioactive symbol, so you'll know where it is.
The gold you can find by
sight.
Find Gold
in Used Cars
Before hauling off your old junker of a car,
check it for gold. There are several locations in an automobile that may
contain gold.
Newer cars carry electronics, which use gold, just like you'd
find in a cell phone or computer. A good place to start is the airbag inflation
chip and anti-lock brakes chip.
You may also find gold in the heat insulation.
Gold from
Books
Have
you ever noticed the gold edges on the pages of some books? That's real gold.
It's fairly easy to recover,
too, because the metal is much heavier than the cellulose used to make paper.
Before turning your books
into pulp, check to make sure they aren't first editions. In some cases, old
books are worth more than the gold they bear.
Gold in
Colored Glass
Ruby
or cranberry glass gets its red color from gold oxide added to the glass.
Using a bit of chemistry, you
can recover the gold from the glass.
This glass is also
collectible in its own right, so as with books, it's better to check the value
of the intact object before scrapping it to recover the gold.
Gold from
a CD or DVD
Got a
CD that sounds so bad it makes your ears bleed or a DVD that you either hate or
else is so scratched up it skips all the best parts of the movie?
Rather than simply throwing
it away, one fun option is to microwave it to see plasma.
Whether you nuke the disc or
not, it may contain real gold that you can recover. The gold is in the
reflective surface of the disc.
Only high-end discs use gold,
which often gives them a distinctive color, so if you bought them on the cheap,
chances are it contains a different metal.
Gold in
Jewelry
Your
best bet for finding enough gold worth the time and effort of recovery is to
examine gold jewelry.
Now, lots of jewelry that
looks like gold really isn't, and some jewelry that appears silver could
contain quite a lot of gold (i.e., white gold).
You can tell them apart by
looking for a stamp or quality mark on the inside of rings and pendants and on
the clasp of other jewelry.
Pure gold would be 24k, but
that is too soft for use in jewelry.
You might find 18k gold,
which will be very "gold" in color.
Other common markings are 14k
and 10k. If you see 14k GF, it means the piece has a coating of 14k gold over a
base metal.
While it's not worth much on
its own, a whole lot of plated jewelry could add up to a significant amount of
gold.
Gold in
Embroidered Clothing
One
characteristic of gold is that is extremely ductile.
This means it can be drawn
into fine wires or threads. You can find clothing that has real gold (and
silver) embroidery. Decorative cloth may also contain gold.
How do you know you're
looking at gold and not gold-colored plastic? Plastic melts at a low
temperature.
Another way to detect a real
metal is that gold, like other metals, will fatigue and break. If you use a
magnifying glass, you'll likely see a few broken threads on a piece of real
gold embroidery.
Gold on
Dishes and Flatware
Many
fine china patterns and some flatware contains real gold.
The gold rims of cups and
plates often are 24k or pure gold, so while there may not be a lot of gold on a
single dish, the value can add up quickly.
The best part is the gold
scrapes off, so complicated chemical methods aren't required.
Usually gold flatware is a
lower purity of gold, since utensils take a lot of punishment, but there is
more total mass of gold in them.
Anne Marie Helmenstine, Ph.D.
Ph.D. in biomedical sciences from the
University of Tennessee at Knoxville - Oak Ridge National Laboratory.
Science educator with experience
teaching chemistry, biology, astronomy, and physics at the high school,
college, and graduate levels.
ThoughtCo and About Education chemistry
expert since 2001.
Widely-published graphic artist,
responsible for printable periodic tables and other illustrations used in
science.
Experience
Anne
Helmenstine, Ph.D. has covered chemistry for ThoughtCo and About Education
since 2001, and other sciences since 2013. She taught chemistry, biology,
astronomy, and physics at the high school, college, and graduate levels.
She has worked as a research scientist and also abstracting and indexing
diverse scientific literature for the Department of Energy.
In
addition to her work as a science writer, Dr. Helmenstine currently serves as a
scientific consultant, specializing in problems requiring an interdisciplinary
approach. Previously, she worked as a research scientist and college
professor.
Education
Dr.
Helmenstine holds a Ph.D. in biomedical sciences from the University of
Tennessee at Knoxville and a B.A. in physics and mathematics with a minor
in chemistry from Hastings College. In her doctoral work, Dr. Helmenstine
developed ultra-sensitive chemical detection and medical diagnostic tests.
Anne
Marie Helmenstine, Ph.D.
ThoughtCo
and Dotdash
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