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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.
I just acquired a huge amount of 357Sig ammo and it all happens to be an amazing round, the bonded Speer Gold Dot! The nickel cases aid in feeding and extracting. The bullet is designed differently than the 9mm GD because of the greatly increased velocity: 1350 ft/sec out of a Glock 32...
Federal 308 168gr Sierra MatchKing BTHP Gold Medal Ammunition 20rds $15.99
Federal 308 168gr Sierra MatchKing BTHP Gold Medal Ammunition 20rds - GM308M
***SOLD***
Looking to sell my (2015) Series 80 GCNM in .45 ACP.
It's just a bit too big for my hands, so I need to sell it.
Comes with box, 2 mags, both recoil springs, and bushing tool.
Low round count, less than 200. Very nice pistol.
I can email pictures.
Looking for $950.
Not really...
PRICE REDUCED to $350.00 + shipping of $25.00 if needed. This were made from the 1980's through 2003 and this one is finished in gold parts. It makes a great concealed weapon due to its size; perfect for trousers pocket, purse, or shorts. It is somewhat rare and comes with custom fit wood...
Benchmade Gold Class Stryker 2 (no longer made limited run) Retail's at $600
Carried a few times
Little rub mark on swivel
Number 555
Perfect trade would be for a Pioneer SX-1050 OR SX-1080 or ?
Possible up for $ but would love to trade.
503-871-0456 call or text
After parting with my 308 I am unloading the remaining ammo that I have left over. There are 11 boxes of Federal Premium Gold Medal 308 168gr Sierra Match Kings. Each box has 20 rounds in it for a total of 220 rounds. I am looking to sell them all as one lot and not split them out. Unfortunately...
I've been consolidating a lot of my possessions and the stuff that one accumulatest over 40+ years is astonishing.
I used to love to go out on the town and dress nice with gold nugget rings & necklaces (the ZZ Top bit).
Now that I'm a cave dweller & am happy just to stay home it's time to get...
I have 5 1/2 boxes (110 rounds) of this stuff. They are all from the same lot. I bought them all together but two of the boxes don't have the lot stamp for some reason. $80 for all 110 rounds.
308 by SLO posted Nov 3, 2017 at 7:50 AM
SOLD I posted my kimber gold match fs earlier, but decided to post a trade ad for a short time for a czp10c. Someone close to me wants one, and I am willing to trade my gold match for one.
SOLD As title states. Looking to sale or trade kimber gold match stainless with g10 grips, wilson magwell, 4-5 mags safariland als holster. The pistol is not a safe queen. Been through numerous classes, and carried on duty. She's a legit shooter as well. Only thing interested in trading...
Custom Wound Seymour Duncan Pearly Gates Humbucker, two Texas Specials, Schaller strap locks. Comes with case that's been used, but it works. Bought new at Portland Music in 1999. This is not the new Lone Star Strat Reissue, this is the original American one that the reissue was modeled after...