Lesson 6: Ore Minerals
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What makes the extraction of valuable resources?
Mining
There are 6 commodities in mining resources.
Gold, Iron, Coal, Diamond, Sand, and Gravel
Name 2 fluid resources
Oil and Natural gas
This is the oldest mine, dating back 40,000 years ago. And where?
Lion Cavern in Swaziland
This is an entire amount of geologic material of possible economic importance, discovered or not.
Resource
A resource that has been discovered with certainty and can be mined for a profit.
Reserve
It changes based on mining, market price, and new technologies.
Reserve size
Associated with igneous rocks, particularly their hydrothermal fluids.
Metallic ore
What happens when early-forming minerals crystallize and settle to the bottom of a cooling mass of magma?
Crystal setting
What are the 4 types of hydrothermal ore deposits?
Contact metamorphic deposits, hydrothermal veins, dispersed deposits, and hot-springs deposits
Extraction from the Earth’s surface.
Surface mining
Shafts and tunnels to access higher-grade or concentrated minerals at depth.
Underground mining
What are the key steps in Mineral Processing?
Sampling, Analysis, Comminution, Concentration, Dewatering, Extraction & Refining (Smelting).
A key step in mineral processing, what is it? Takes a section that represents a whole that is required to be analyzed
Sampling
A key step in mineral processing, what is it? Determines the valuable component of an ore. A Chemical, mineral, and particle size analysis.
Analysis
A key step in mineral processing, what is it? Process of crushing and grinding to separate the precious components of the ore.
Comminution
A key step in mineral processing, what is it? Extraction of precious minerals from raw sources.
Concentration
A key step in mineral processing, what is it? Used the concentration to transform it to usable minerals. Filtration and sedimentation of suspension, and drying of solids from the suspension is included.
Dewatering
Converting concentrated ore to metal via heat or chemical leaching.
Extraction & Refining (Smelting)
A large hole, common type of surface mining. Targets shallow, widely dispersed minerals by explosive blasting and drilling.
Open pit mining
This is an iron ore used as red dye.
Hematite
It can host deposits of copper, nickel, platinum, palladium, rhodium, and chromium.
Layered intrusions
It has an ultramafic-mafic composition
Layered intrusions
A single intrusion in South Africa known as the source of the world’s chromium commodity.
Bushveld complex