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IMPORTANT ORE: ALLUVIAL GRAVEL
MAC ARTHUR FORREST cyanide process
crushing and concentration: the ore is crushed and then concentrated by n froth flotation process
roasting : the concentrated ore is roasted in excess of air when the impurities are oxidised and escape as their volatile liquid
treated with KCN: IT IS TRETED WITH dil kcn for 24 hrs the gold dissolve from it and form complex solution of potassium aurocyanide
4au + 8KCN + 2HO + O GIVES 4K(AU(CN2)) + KOH
2 2
precipitation of gold : the solution of filtrate is remove and gold is precipitated
anode:impurities
cathode:gold
electrolyte:aucl3 +hcl
onpassing through current the pure metal precipitated in cathode
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Types of gold?
Alluvial gold, Reef gold,and Fools gold
How is gold retrieved?
1. Alluvial-Alluvial gold is found in quartz rocks in a 'gold' or water vein. 2. Reef-Reef gold in found in lakes, streams or rivers in the sand or gravel at the bottom. Gold is heavy, but soft so it sinks. Panning the ideal way to find reef gold. 3.Pyrite- Also know as 'fools gold', pyrite looks just like gold and the one way to tell if pyrite is pyrite or gold is if to lick your finger and put your finger on it and if it sticks it is gold.
An Olympic medal contains 71.5 percent of gold by mass How much gold could be extracted from a medal that weighs 115 grams Answer in units of mol?
0.417 mol could be extracted.
What is the difference between gold ore and gold nuggets?
Gold nuggets are as small as gravel or sand grains, while gold ore is large and is a group of minerals.
How is gold extracted now compared to 100 years ago?
100 years ago gold was quite simply panned for in river beds. Also it was mined by hand, miners used to seek a gold seam. Gold mines now use advanced mechanical tools to recover material that gold may be in. Gold can now be extracted from these materials by chemical methods.
How did the gold rush ended?
The Gold Rush ended on 1855 by which time alluvial gold areas were depleted and gold had to be extracted from rock, which required mechanical equipment not available to diggers.
Continental deposit of gravel and sand?
Alluvial fan
What is the difference between alluvial and quartz mining?
The word Alluvial describes a type of soil. It can be made up of sand, silt, clay, gravel, or other matter deposited by flowing water. Alluvial Mining is when a prospector gets the gold bearing soil from a creek, river or river deposits. Once they gather the soil and refine the material to concentrate they use a gold pan to pan for gold- the gold they find is called alluvial gold. Quartz reef mining is when it is mined from the source. Its particles of gold embedded in quartz. The difference between alluvial and quartz mining is that alluvial mining takes place far from the source of the gold and found in rivers and creeks. Quartz mining takes place at the source of the gold.
If you went panning in the river would you be panning for alluvial gold or reef gold?
alluvial gold
Where is alluvial gold found?
Alluvial gold is found in alluvium, which is the soil in and around rivers. Alluvial gold is often found through river flats and floodplains.
What does alluvial soil consists of?
Alluvial soil is clay, silt, or gravel carried by rushing streams and deposited where the stream slows down.
Color of Alluvial soil?
The Colour of Alluvial gold is yellow
What is the difference between alluvial and reef gold?
Alluvial gold is found in the water and reef gold is found in rocks. Reef gold is worth more than alluvial gold. Hope this helps:)
What is alluvial deposition?
Alluvial sediment:is clay or silt or gravel carried by rushing streams and deposited where the stream slows down. Alluvial deposition refers to this process.by which alluvium is thus deposited.
How do you use alluvial in a sentence?
The sentence with the word 'alluvial': Alluvial soil is formed by the deposition of clay, silt and gravel carried by the rushing water stream which is deposited in the plains where the stream slows.
Types of gold?
Alluvial gold, Reef gold,and Fools gold
How is gold retrieved?
1. Alluvial-Alluvial gold is found in quartz rocks in a 'gold' or water vein. 2. Reef-Reef gold in found in lakes, streams or rivers in the sand or gravel at the bottom. Gold is heavy, but soft so it sinks. Panning the ideal way to find reef gold. 3.Pyrite- Also know as 'fools gold', pyrite looks just like gold and the one way to tell if pyrite is pyrite or gold is if to lick your finger and put your finger on it and if it sticks it is gold.
