0
Mining
Mining for coal is something that is widely known, but did you know that diamonds, uranium, copper, and other non-renewable natural resources are also mined? There are two types of mining; surface and subsurface. Questions about the methods and types of mining, what ores are mined, and related questions should be asked in this category.
4,677 Questions
Why did children have to mine for coal in the 1800s?
Yes, families were often farming families ( 90% of the country farmed) and everyone had jobs to do. Even the youngest had chores. A 2 year old could help feed the chickens and collect the eggs. Young boys 8-9 years old often collected wood for the house and fireplace. Older children helped around the house and farm. Girls helped do the household chores like making candles, churning butter, washing, cooking, sewing/mending, watching younger children, making bread, planting the garden, milking the cow, and other chores. Older boys were expected to help the father with the crops, animals, and farm. They were also "rented" out to other farmers in the area and the parents could collect/keep what they earned at the other farm. A boy or girl didn't reach adulthood until they were 21 and were expected to help the family until they married and moved away.
Pyrite is actually a mineral. It is often found within metamorphic and sedimentary rocks though.
What southern African country has uranium?
yes 1 plant Koeberg built in the 80s,the only nuclear plant in Africa.
We mine for minerals so that we can use those raw materials to create more advanced things with it. The raw material is first refined, and can then be used to manufacture many other products, such as cars, televisions etc.
What is the chemical formula of pyrite?
The mineral pyrite, or iron pyrite, is an iron sulfide with the formula FeS2. This mineral's metallic luster and pale-to-normal, brass-yellow hue have earned it the nickname fool's gold because of its resemblance to gold. The color has also led to the nicknames brass, brazzle and Brazil, primarily used to refer to pyrite found in coal.
The streak should be olive greenish. My class did a streak test and found that out with pyrite. You want to do it? Get pyrite, a tile, and rub it across the tile. You should find out. But according to our results, pyrite had the olive green streak.
Why is pyrite called fool's gold?
Fool's gold is iron pyrites, iron sulphide, FeS2. It is a sulphide mineral.
Where is the mineral sapphire found?
Besides the Burmese and Sri Lankan mines, good quality sapphires are found in Cambodia, Madagascar, Thailand, Australia, USA, Nigeria and Kenya. === === What is in a sapphire
What is the difference between iron and iron pyrite?
Iron is composed only of the element Fe (iron). Iron pyrite (most correctly referred to as pyrite) is a mineral composed of Fe and S (sulfur).
I don't think so; it begins to decompose into ferrous sulfide (FeS) and elemental sulfur around 550 °C. The sulfur reacts with air to form sulfur dioxide. At higher temperatures, the ferrous sulfide also breaks down, leaving iron oxide. Pyrite roasting is sometimes used as a first step toward producing sulfuric acid. It's a nasty process.
Currently lead is usually found in ore with zinc, silver and copper and it is extracted together with these metals. The main lead mineral in Galena (PbS) and there are also deposits of cerrussite and anglesite which are mined. Galena is mined in Australia, which produces 19% of the world's new lead, followed by the USA, China, Peru' and Canada. Some is also mined in Mexico and West Germany.
What do marble tiles look like?
Marble tile look very natural and they have natural variations unlike fabricated marble tile. Please Click link below to see pictures of natural tiles: http://www.qualityonyx.com/index.php?option=com_virtuemart&Itemid=73
What are the examples where streaks are used in identifying minerals?
Streaks of Minerals
Streaks ( layers of different colorings ) can be used to identify which country a mineral originate. Streaks are an optical property (viewing effects--color, luster, luminescence, iridescence). For example Agate quartz from German mines can streak red, pink, brown, separated by gray bands. The Agate from South American are usually dull gray. The inherent color (basic color, the true color) is colorless. Color in a mineral comes from other elements. Streak are use to enhance a mineral's importance in increase price as Chrysoberyl which has light source that move across the surface. See color by streaking a mineral on a 'streak plate, (rough porcelain plate).
All minerals have luster. There are different types of luster. Pyrite has metallic luster.
What is sandstone used for and why?
Sandstone is a clastic sedimentary rock that is made up of cemented sand grains (usually quartz) and has a gritty feel to it.
== ==
this is the term uesed when sand has been compacted together under such force so as to be turned into a solid mass rather than individual grains of sand.
it looks weird
Kimberly, in the Boers Transvaal and Orange Free State. Cecil Rhodes, a British man first wanted to go after them, and he had to take over the Boers land in order to do so. Cecil Rhodes founded Debeers Diamonds.
What minerals can you identify in the specimen of gabbro?
The minerals that make up Gneiss are almost always: feldspars, quartz, and mica. Sometimes: kyanite, garnet, hornblende, tourmaline, magnetite, and many others.
Source: Geology University Student
How is gold mined in South Africa?
Baken diamond mine, located along the lower Orange River in South Africa.
Finsch diamond mine, located near Lime Acres, 160km northwest of Kimberley, Northern Cape
Premier Mine, situated in the town of Cullinan, 40 kilometres east of Pretoria, Gauteng Province.
Venetia Diamond Mine, situated close to the town of Alldays in the Limpopo province and is located within the 360 km² Venetia Limpopo Nature Reserve.
Most pyrite is not valuable (I have heard estimates of 50 cents (USD) per gramme). Some pyrites contain traces of gold that increase its value, but it is mainly used for industrial extraction of sulphur. Large, perfectly cubic crystals of pyrite are valued by museums as exhibits.
Compare surface and subsurface mining?
Surface Mining
easier than subsurface mining
does more damage to environment
creates more of a mess
Subsurface Mining
it is very dangerous
you retrieve minerals from underground
you have very little air underground
What is the most valuable thing in the world?
Answer To relate a traditional proverb: Ui mai koe ki ahau he aha te mea nui o te ao, Māku e kī atu he tangata, he tangata, he tangata. This is Maori for "Ask me what is the greatest thing in the world, I will reply: it is people, it is people, it is people."
Another answer:
The worlds most valuable item is its ecology. Without humans the world would get along just fine, without the world (or its ecology) humans would not do to well.
Another answer:
All esoterics aside; the worlds most valuable single item is the International Space Station; cost $100 billion.
Another answer:
According to Socrates, the most valuable thing in the world is wisdom, because without wisdom, one cannot know the true value of anything else.
Another answer:
The worlds most valuable substance is antimatter.
Another Answer:
Pure water . . . the plants need it, the animals need the plants, meat eaters need plants, we need the animals and the plants and the water...
Another Answer:
Knowledge.
Another Answer:
The most valuable thing in this world is our parents who gave life, knowledge and awareness to us.
Another Answer:
Time. You need time to get knowledge and everything else that exists.
Another Answer:
Happiness and Contentment with life.
Another Answer
Land and leadership. For example if you have no land, country and leader, the world won't know who you are and won't help your people.
What is the fracture of pyrite?
first no go be gay some where else by the way . how do five gay guys walk. in one direction
