Introduction:
Copper
is derived from the Latin word cuprum, which means “from the island of
Cyprus”. Copper has been put to use for
at least 11,000 years according to archaeologists. Ancient people found copper
in “nuggets and masses on the surface of the Earth, adjacent to streams, in the
walls of canyons” (Lugaski, 1997, n.p.).
Throughout the years copper has been used to make such things as pots,
pans and even some crowns and headdresses in ancient times. The use of copper spread to Asia where “cultures
and religions, such as Buddhism and Hinduism, used copper in the creation of
fantastic inlays, embossed facades on palaces and temples, and ceremonial
vessels” (Jewellery Supplier, 1999, n.p.).
In recent times copper has been used to make armour, weapons, bells, and
ornaments.
Nickel’s
name comes from the German word for the mineral niccolite (kupfernickel) which
means “Old Nick’s copper”. A Swedish
Chemist named Axel Fredrik is credited for the discovery of Nickel in 1751. In today’s world “nickel is obtained from the
mineral pentlandite” (Thomas Jefferson National Accelerator Facility - Office
of Science Education, n.d., n.p.).
Ontario, Canada is the world’s leading supplier of nickel. It is mined
from the Sudbury region where it is believed that a meteor struck there along
time ago.
Chemical Properties
Copper’s atomic number is 29 and its chemical symbol is “Cu”. Copper’s natural state is a solid. The heat of fusion is 13 kJ mol-1, heat of vaporization is 304.6 kJ mol-1, and the heat of atomization is 338 kJ mol-1.
Nickel’s
atomic number is
Physical Properties
Copper
is a mineral that is both malleable and ductile. This means that it can be bent and shaped,
whether hot or cold, without cracking and that it can be drawn out into thin
wire. Copper has a metallic lustre and
is opaque. Copper has no cleavage it
only fractures. Pure copper is the most efficient
conductor of electricity since it is second only to silver which is too
expensive for this sort of use. Copper
is also a good conductor of heat that makes it useful for cookware,
refrigerators, and radiators. It is
resistant to corrosion; however, if the air around it is often damp it will
eventually become coded with “patina” which is a green film that stops all
further corrosion. The melting point of
copper is 1083.4 degrees Centigrade and it boils at 2567 degrees Centigrade.
Nickel has a metallic, lustrous, silvery
tinge to it. It is a silvery with metal
with a nice polish to it. Nickel can
come in a variety of forms including foil, powder, flakes, sheet, wire, mesh,
and rods. Nickel has a melting point of
1453 degrees centigrade and a boiling point of 2732 degrees centigrade. Nickel is a hard mineral, it is also ductile,
malleable, and is to some extent ferromagnetic.
Nickel, like copper, is also a decent conductor of heat and electrical
current. Nickel is a member of the
transitional elements, which is made up of iron and cobalt metals. In some cases nickel compounds are considered
to be dangerously toxic or carcinogenic.
Picture
of chateau
Conditions in which the mineral/rock will occur
Processes
by which the mineral/rock forms and where it occurs geographically, (use the
specific area on the sheet)
How
we use it, how it affects our environment and how it effects our economy,
industrial uses also
References:
Ford, W.E. (1932). Dana’s
Textbook of Mineralogy (4th ed.). London: Chapman & Hall.
Hunt, Kraus & Ramsdell. (1936). Mineralogy (3rd ed.). York: The Maple Press Company.
Jewellery
Supplier. (1999). Retrieved March 9, 2004, from
http://www.jewelrysupplier.com/2_copper/copper_History.htm.
Lugaski, Tom. (1997). Retrieved March
11, 2004, from http://www.unr.edu/sb204/geology/copper2.html.
Maxwell, John A. (1968) Rock and Mineral Analysis. Ottawa:
Interscience Publishers.
Thomas Jefferson National Accelerator Facility - Office of Science
Education. (n.d.). Retrieved March 9, 2004 from
http://education.jlab.org/itselemental/ele028.html.
Winter, Mark. (2003). Nickel. Retrieved
March 11, 2004, from
http://www.webelements.com/webelements/elements/text/Ni/key.html
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