It is found on all continents (w/ the exception of Antarctica) but is most abundant in Africa, especially South Africa (country).
Gold is found in the solid state.
Yes, usually gold is mined in underground mines. Gold can be found on the surface where it has been exposed by erosion and in river sediments.
Uncombined
Gold is usually found in metamorphic rock but can also be found in sedimentary rock. In deep mines, quartz rock is found in association with gold.
Gold naturally mixes with copper and silver. So gold in nature is usually 16k to 22k . That is to say 60 to 90% pure. In addition gold is usually found in quartz rocks. It usually looks like large salt crystals. Some very nice looking nuggets can be found and bought with the crystals
875 is 21carat gold fineness. Rare, usually found in Arab countries.
copper, silver, nickel, iron...
Chemically reactive.
Exactly im not sure but, they are usually gold pins sometimes gold blocks but they are about 9 carrot so not worth selling :)
Gold can make a compound, but it only reacts with a small number of chemicals that are not normally found in nature.
Reacting with other chemicals naturally
Where is gold normally found