Describe mineral mining in Kenya, factors affecting exploitation, and gold processing in South Africa.

here are the answers to questions 7, 8, and 9:

Question 7:

a)

i) Mining is the process of extracting valuable minerals or other geological materials from the earth, typically from an ore body, lode, vein, seam, reef, or placer deposit.

ii) The areas where the following minerals are mined in Kenya are:

• Carbon (iv) oxide (assuming this refers to a carbon-rich mineral like graphite): Taita Taveta
• Titanium: Kwale
• Limestone: Kajiado, Athi River, Bamburi (Mombasa)

b) Three factors that influence the exploitation of minerals are:

• Size and quality of the deposit: Larger deposits with higher mineral concentration are more economically viable.
• Accessibility: The ease with which the mineral deposit can be reached and extracted, considering depth, terrain, and overburden.
• Technology: The availability of appropriate and efficient mining and processing technologies.
• Market demand and prices: High demand and favorable global prices make exploitation profitable.
• Capital: Sufficient financial investment for exploration, extraction, and processing infrastructure.
• Government policy: Regulations, taxes, and incentives can encourage or discourage mining activities.

c) The processing of gold in South Africa typically involves several stages:

• Crushing and Grinding: The gold ore is first crushed into smaller pieces and then ground into a fine powder.
• Flotation: The powdered ore is mixed with water and chemicals. Air is bubbled through, causing gold particles to attach to the bubbles and float to the surface, forming a concentrate.
• Cyanidation: The gold concentrate is treated with a cyanide solution, which dissolves the gold, forming a gold-cyanide complex.
• Adsorption: The gold-cyanide solution is passed through activated carbon, which adsorbs the gold.
• Elution and Electrowinning: The gold is stripped from the carbon using a hot caustic solution (elution), and then recovered from the solution using electrolysis (electrowinning), where gold plates onto cathodes.
• Smelting and Refining: The recovered gold is melted in a furnace to produce impure gold bars (doré), which are then further refined to achieve high purity.

d)

i) Three ways in which gold contributes to the economy of South Africa are:

• Foreign exchange earnings: Gold exports are a major source of foreign