The rocks have a high enough metal content to make them economically viable for extraction. The metal can be extracted and used for various industrial purposes. Extracting the metal from the rocks would be profitable.
It is an ore
The method used to extract a metal is determined by factors such as the reactivity of the metal, its abundance in the Earth's crust, and the cost-effectiveness of the extraction process. Additionally, the physical and chemical properties of the ore from which the metal is extracted also play a role in selecting the extraction method.
because it requires expensive electrolysis to convert aluminium ore into aluminium, and there are few places where its ore is concentrated enough to be economically viable.
The obvious reason: the exploiter hopes to extract enough metal from the ore to turn a profit.
Metal-bearing rocks sought after in mining are typically called ore deposits. These deposits contain high enough concentrations of valuable metals such as copper, gold, silver, or iron to be economically viable for extraction. Mining companies prospect for ore deposits to extract and process the valuable metals.
Phytomining basically means in order to reduce metal contamination and that the metal is economically expenisve or useful in some way to extract it would amend their soil with phytoaccumulating plants.
The rocks have a high enough metal content to make them economically viable for extraction. The metal can be extracted and used for various industrial purposes. Extracting the metal from the rocks would be profitable.
In the crust, Aluminum. However, the only economically viable form for mining is Aluminium-Bauxite which is not prolific, hence the higher cost of Aluminium.
This is a raw material (feedstock).
It is an ore
Enrichment of metals in metallurgy refers to the process of increasing the concentration of a particular metal in an ore to make it economically viable for extraction. This can involve physical separation techniques such as froth flotation or magnetic separation to concentrate the desired metal in the ore for further processing.
Iron
To extract a metal using carbon, the metal ore is mixed with carbon and heated in a furnace. The carbon reacts with oxygen in the metal ore to form carbon dioxide gas, leaving behind the pure metal. This process is known as reduction and is commonly used to extract metals such as iron and copper.
an ore
Dolomite
Granite doesn't contain economically viable concentrations of metals like iron, copper, or aluminum. The extraction process would be too costly and inefficient compared to mining ores that are rich in these metals. Moreover, most of the metals found in granite are tightly bound within the rock's mineral structure and are difficult to extract.