Mining

The type of mining used to mine coal is called surface mining or underground mining. Surface mining involves removing layers of soil, rock, and vegetation to access coal deposits near the surface. Underground mining involves creating tunnels to access coal deposits deep underground.

Obsidian does not have cleavage because of the way it forms. Obsidian is essentially nature's form of glass and so it has no regular or patterned crystal structure. Without that crystal structure, there is no cleavage.

Open cast mining is generally considered safer than underground mining but there are still some dangers such as:

1)Because opencast mining is done in the form of ledges one can easily fall off one of these ledges which can can meters high.

2)Because open pit mining is done using explosives it can cause injury due to flying pieces of rock and other debris.

3)Open cast mining needs a lot of space for digging and it affects the environment in many bad ways.Animals loose their homes,deforestation occurs,people have to be relocated to other places because of pollution hazards.

4)The use of explosives may also cause other accidents to happen.

Aluminum ore, also known as bauxite, is processed to extract aluminum metal. This metal is then used in a wide range of products, including beverage cans, car parts, aircraft components, construction materials, and more.

No, iron ore is not a silicate mineral. Iron ore is typically composed of iron oxides, such as hematite and magnetite, which are not silicate minerals. Silicate minerals are minerals that contain silica, oxygen, and other elements like silicon and aluminum.

Metals are separated from ores through a process called smelting, where the ore is heated to a high temperature to extract the metal. This process involves combining the ore with a reducing agent, such as carbon, to reduce the metal oxide to its pure form. The metal is then collected as a molten liquid and separated from the other components of the ore.

Bauxite ore is mined to obtain aluminum. Bauxite is primarily composed of aluminum hydroxides, iron oxides, silica, and various impurities, and it is the main source of aluminum in the world.

A stone is typically cut and shaped into a specific design or shape, then polished to enhance its appearance. It may be mounted in a setting, such as metal prongs, to create a piece of jewelry. Finally, it may be embellished with other gemstones or metals to create a finished piece.

Other mineral properties such as luster, streak, and specific gravity are less useful for identification because they can vary widely among different minerals and may not be unique to a specific mineral. In contrast, properties like hardness and cleavage are more consistent and can help accurately identify a mineral.

The noose is the loop at the end of the rope which is placed around the victims neck, the actual rope is known technically as a ligature and the gallows is the platform.

Hematite and magnetite are the primary minerals used to create iron ore through the process of extraction and refining. These minerals contain a high concentration of iron, which is extracted and processed into iron ore for various industrial applications such as steel production.

The value of iron pyrite can vary depending on quality and market demand. On average, it can range from $1 to $10 per pound. So, for 16 ounces (1 pound), the value could be anywhere from $1 to $10.

A barometer shows a greater reading when taken into a coal mine because the air pressure is higher underground due to the weight of the earth's atmosphere above it. This increased pressure causes the barometer to indicate a higher reading.

Minerals like uraninite and carnotite are highly radioactive ores of uranium.

From 1000 g of ore containing 1 percent metal, you would be able to extract 10 g of metal. This is calculated by taking 1 percent of 1000 g.

The Chilean miners were mining for copper at the San Jose copper-gold mine in Copiapo, Chile. Copper is a valuable metal used in various industries like electronics, construction, and transportation.

The most common ore in iron is hematite (Fe2O3).

First, the ore must be mined from the ground. Next, it needs to be processed to extract the desired minerals from the ore. This is typically done through crushing, grinding, and separating the ore. Finally, the extracted minerals are further refined and processed to create the final product.

One of the biggest problems for miners is ensuring the safety of their workers in often hazardous conditions underground. Additionally, fluctuating commodity prices and market demand can also pose challenges for miners in terms of profitability and sustainability. Lastly, environmental concerns related to pollution and land degradation from mining activities are significant issues that miners need to address.

Density is used to separate gold from surrounding material because gold is much denser than most other minerals and rocks. By exploiting this difference in density, it becomes possible to use techniques such as panning, sluicing, or shaking tables to effectively separate gold from the lighter materials it is often found with. This enables efficient recovery of the valuable gold particles.

ROCKS USED FROM THE EARTH'S CRUST

We get lots of different types of rock from the earth's crust, such as gems building material and ores. Ores such as lead gold and manganese are used to make coins. Gems, for instance diamonds, rubies and sapphires, can be carved and used in rings necklaces and earrings. Carbon fuels like coal peat and oil are flammable materials from the earth's crust. There are different types of rucks used from the earth's core for example brick, sandstone and limestone are used for building houses. Quartz is used for making clocks and chalk is used for writing.

Posted by Kieran FitzGerald Edinburgh 1M1

We also get gravel and granite from the Earth's crust. Granite is used for countertops in kitchens, bathrooms, etc. We dig and mine gravel. Gravel is used for driveways and in some parking lots. It looks like little pieces of rock.

Farming typically takes place in the Central Lowlands of Australia due to the fertile soils and sufficient rainfall for agriculture. Mining activities are less common in this region compared to other parts of Australia.

Amethyst can form over tens of thousands of years as silica-rich water containing traces of iron seeps into cavities in rocks, where it slowly crystallizes and builds up to create amethyst crystals. The exact time can vary depending on environmental conditions and the specific geological processes involved.

Ore is processed to extract valuable metals or minerals from it. The processing removes impurities and separates the desired materials for further refining and utilization in various industries such as manufacturing, construction, and electronics. This process helps in making the most out of natural resources and meeting the demands for these materials in the market.