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gold
Gold is a chemical element with symbol Au (from Latin: aurum) and atomic number 79. In its purest form, it is a bright, slightly reddish yellow, dense, soft, malleable and ductile metal. Chemically, gold is a transition metal and a group 11 element. It is one of the least reactive chemical elements, and is solid under standard conditions. The metal therefore occurs often in free elemental (native) form, as nuggets or grains, in rocks, in veins and in alluvial deposits. It occurs in a solid solution series with the native element silver (as electrum) and also naturally alloyed with copper and palladium. Less commonly, it occurs in minerals as gold compounds, often with tellurium (gold tellurides).
Gold's atomic number of 79 makes it one of the higher atomic number elements that occur naturally in the universe. It is thought to have been produced in supernova nucleosynthesis and from the collision of neutron stars and to have been present in the dust from which the Solar System formed. Because the Earth was molten when it was just formed, almost all of the gold present in the early Earth probably sank into the planetary core. Therefore, most of the gold that is present today in the Earth's crust and mantle is thought to have been delivered to Earth later, by asteroid impacts during the late heavy bombardment, about 4 billion years ago.
Gold resists attacks by individual acids, but it can be dissolved by aqua regia (nitro-hydrochloric acid, literally "royal water"). The acid mixture causes the formation of a soluble gold tetrachloride anion. Gold metal also dissolves in alkaline solutions of cyanide, which are used in mining and electroplating. It is insoluble in nitric acid, which dissolves silver and base metals, a property that has long been used to refine gold and to confirm the presence of gold in items, giving rise to the term acid test; it dissolves in mercury, though, forming amalgam alloys, but this is not a chemical reaction.
This metal has been a valuable and highly sought-after precious metal for coinage, jewelry, and other arts since long before the beginning of recorded history. In the past, a gold standard was often implemented as a monetary policy within and between nations, but gold coins ceased to be minted as a circulating currency in the 1930s, and the world gold standard was finally abandoned for a fiat currency system after 1976. The historical value of gold was rooted in its medium rarity, easy handling and minting, easy smelting, corrosion resistance, distinct color, and non-reactivity to other elements.
A total of 183,600 tonnes of gold is in existence above ground, as of 2014. This is equivalent to 9513 m3 of gold. The world consumption of new gold produced is about 50% in jewelry, 40% in investments, and 10% in industry. Gold's high malleability, ductility, resistance to corrosion and most other chemical reactions, and conductivity of electricity have led to its continued use in corrosion resistant electrical connectors in all types of computerized devices (its chief industrial use). Gold is also used in infrared shielding, colored-glass production, gold leafing, and tooth restoration. Certain gold salts are still used as anti-inflammatories in medicine.
This is a Keene 2" backpack Gold dredge. Bought this because I was interested in Gold prospecting when I was in high school and a few years after. I have a family now and am expecting our first child in February, I haven't used it in years. I only took it out a handful of times and had a good...
SEND ME A PM AS I DO NOT GET NOTIFIED WHEN YOU POST IN THIS AD.
DO NOT REPLY IN THIS AD UNLESS YOU ARE POSTING "I'LL TAKE IT". IT JUST CLUTTERS UP THE AD.
NOT INTERESTED IN TRADES.
NOT INTERESTED IN SHIPPING.
I AM ABLE TO MEET IN THE PORTLAND METRO AREA.
THIS IS PART OF AN ESTATE. PRICE IS...
SEND ME A PM AS I DO NOT GET NOTIFIED WHEN YOU POST IN THIS AD.
DO NOT REPLY IN THIS AD UNLESS YOU ARE POSTING "I'LL TAKE IT". IT JUST CLUTTERS UP THE AD.
NOT INTERESTED IN TRADES.
NOT INTERESTED IN SHIPPING.
I AM ABLE TO MEET IN THE SOUTHERN PORTLAND METRO AREA.
THIS IS PART OF AN ESTATE...
SEND ME A PM AS I DO NOT GET NOTIFIED WHEN YOU POST IN THIS AD.
DO NOT REPLY IN THIS AD UNLESS YOU ARE POSTING "I'LL TAKE IT". IT JUST CLUTTERS UP THE AD.
NOT INTERESTED IN TRADES.
NOT INTERESTED IN SHIPPING.
I AM ABLE TO MEET IN THE PORTLAND METRO AREA.
THIS IS PART OF AN ESTATE. PRICE IS...
I’d like $700 for Rare Taurus pt92 Made in old Brazilian Beretta factory or trade for suppressor ready Cz p09, or suppressor ready Cz sp01 and a little cash on my end. I’m also open to other suppressor ready/ non SR trades
Vintage Classic Cross Century 14K Gold Filled Pen and Pencil Set, Cross Item Number 1501. Collector Grade Condition, this set was manufactured by A. T. Cross Company in the 1960's.The set comes in its original Presentation Case and is in MINT condition.Case still has the original cream color...
1842 Seated Dollar ($450)
(VF 35) graded by NGC
NGC priced guide ($525)
1917 D Type 1Standing Liberty Quarter ($120)
(XF 45) graded by NGC
NGC price guide ($185)
Prices are OBO!
Also interested in trades *
- 1/4oz Gold American eagle
- 20x American silver eagles
Welp the divorce has been finalized for over a year but the custody issues continue. No need to let this lay around...
https://salem.craigslist.org/jwl/d/aumsville-mens-custom-wedding-band/7225106338.html
Glock 20 gen 4 10mm Parts.
Double diamond threaded golden barrel! Minor wear from the points of contact where barrel hits slide. 9/10 condition.
Stainless steal golden guide rod.
10/10 condition. (I definently felt a different from this and the factory one, a lot better recoil control)
Both...
I have a brand new, never used, 2020 Benchmade Gold Class Mini Crooked River. It comes with box, bag, and all documentation. Benchmade just released this knife a couple days ago and it is selling for $800. please text me if interested. 503-754-0787.
I have a brand new bca 450 bushmaster upper woth bcg 200
Gucci skeletonized 10.5in upper with aim surplus bolt and 18k gold parts like ch amni mag release and bolt release
Eotech 512 might be thrown in or for sale for the right thing
Wanting to trade for a good lpvo
1911
Or any roller...
Brand new Desert Eagle .50AE! I bought and never used it. Come with all the paperwork, case, and extra clip. My loss is your gain. Paid $2000 for it new. $1300 firm.
Magnum Research Desert Eagle .50AE,
Mark XIX Titanium Gold!
Item Number: DE50TG
UPC: 761226029885
Description...
Its been sitting for 7 years so its time to go. There are 3 gold pans, one is a vintage steel pan, 5 gallon bucket classifier with 2 buckets, and a rect. bucket with classifier. 34" Angus Makirk sluice, 48" beach sluice and a hand operated suction gun. Backpack with crevice tools, snuffer...
I received this firearm from my uncle. I have zero interest in sporting clays or trap. Gun appears to be in very good shape. I ran it and it functioned flawlessly. There is only one rib but comes with manuals tools and various chokes and an extra pad. local pick up only. $1050.00 from searching...
I have a gently used gold class bugout up for grabs. Carried it at work for a few weeks. But do to unexpected bills I have to let it go. $500 firm. cash, no trade. Build number is #1515. For more information PM me.
Thank you.