WELCOME TO THE FIRST TIP OF THE MONTH
CONTEST!
Each month we will publish one or more tips
about prospecting equipment, how-to techniques, where to
locate those hard to find items, plans, or anything that
is relevant to the recreational prospector or small scale
miner. Our subscribers will get to vote on which one they
like best. Sometimes those little improvements to your
mining gear make all the difference!
You can participate by emailing us with your
submissions for the contest. Submissions must not be
copyrighted; or if copyrighted, have permission to use
the item attached to your email. We will share them on
this page and select a winner each month. First place
will receive a prize that will vary from month to
month.
This month's prize is a personalized,
autographed copy of the June 2008 issue of ICMJ's
Mining Journal featuring an excerpt from the
upcoming book by Ron "AuWhatFun" Kliewer, 'On
becoming a DredgeMaster'.
Submit your TIPS, tricks and gear modifications
here: kliewer1@verizon.net
This month's
TIP:
We're starting with the basics this time
:
All
about Gold's Unique
Properties
Gold, when found in its natural state,
has from ancient times and still today, is
prized above all other metals for its warm color, low
hardness, high strength, and extreme resistance to
corrosion. No natural acids can corrode or discolor it.
It is one of the heaviest metals known, having a specific
gravity of 19.3, meaning it is 19.3 times heavier than an
equal volume of water. Quartz with which gold is usually
found has a specific gravity of 2.64, which is
the reason gold can be so easily separated by panning and
other methods.
Nearly all of the
gold mined today is in small pieces that cannot be seen with
the naked eye. Nuggets of gold are rare, and are found in
very small quantities, most being only a few grains in size.
Larger nuggets of one ounce or more are very rare. Rarer
still is leaf and crystallized gold, and the rarest form of all
is wire gold, usually seen only in museums.
One of gold's
most useful properties is it's low hardness of 2.5 and
relatively low melting point of 1947 degrees F, which made it
easily shaped and worked into intricate designs by craftsmen
from the earliest times to the present.
Since gold is so
malleable and ductile it will bend but not break. An ounce of
gold can be beaten into an ultra thin translucent sheet about
100 feet square or drawn into a fine wire over 50 miles long.
Gold is an excellent conductor of electricity and is widely
used in micro electronic circuits.
The purity of gold is
measured in Karats, 24 karat being pure, or 12 karat being 50%
gold combined with some other metal such as silver, copper of a
combination or of other metals. Gold is sometimes rated in
terms of fineness, and 24 karat gold would be rated as 1000
fine.
Worldwide the Troy
standard is used for measuring the weight of
gold.
1 Troy pound = 12 Troy
ounces
1 Troy ounce = 20
Pennyweights
1 Pennyweight = 24
Grains
480 Grains = One Troy
Ounce
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