All comments are welcome.
Copper is an Element found in the crust of our Earth, most of it in volcanic rocks. Sometimes it occurs as pure Copper nuggets as gold does, more often though in ores that have to be smelted for purity.
In Chemistry it appears on the Periodic Table with the Atomic Symbol Cu ("Cuprum" in Latin which actually means "of Cyprus") and Atomic Number 29.
One of the reasons I love this metal so much!
The metal chameleon!
The color of copper changes constantly depending on its exposure to air, humidity, temperature and Ph (acidity or alkalinity) of its environment.
Here are some of the potential colors:
Silvery Pink, Salmon Pink, Golden Yellow, Orange, Red, Magenda, Purple, Brown, Dark Brown/Black, Blue and Green (Verdigris)
All these changes in color are a result of a natural process that occurs called Oxidation (loss of electrons).
Copper oxidation should never be mistaken for rust. There is a big difference between these two.
Copper is a non-ferrous metal and as such, doesn't rust, it's not magnetic and has resistance to corrosion.
:Other characteristics of Copper are: high conductivity in both electricity and temperatures (heat and cold), has antibacterial and antifungal properties, but it's also a vital nutrient to all living organisms!!!
Copper is the first metal to ever be used by humanity because of it's plasticity, durability and versatility. The oldest specimen we have to prove this, are some Copper Beads made of nuggets, found in Iran and date about 10.000 years ago! A large variety of every day use objects was made such as pots and pans, jewellery, sculptures, ornaments and mirrors (yes, the first mirrors, before glass was discovered, were made of highly polished copper!). Even tools and weapons, though quickly replaced with a much harder alloy of Copper and Zinc (Bronze - the Bronze Age) that would be harder than Copper but still carry most of its properties.
Nowadays, with new technology, more and more new copper products are created every day, such as Copper fibers, Copper Textiles, Conductive and antifouling paints , nano particles etc. that apply in a variety of industries:
Electronics, Health care, Sportswear, Medical care, Agriculture, Fishfarming and more.
And of course is still held in the highest regard by Artists and Craftsmen as it has been throughout the ages!
There are loads more things I could say about this amazing metal, but I'll stop here.
I am just a metalsmith after all... There are plenty of scientists out there that have written much better articles on this topic.
One thing is for sure:
Copper has been worshiped for thousands of years and still plays an essential role in our modern lives!