A gem, jewel (hence the word jewellery).
I think the answer you are looking for is bedrock. Hope I helped.. If I did, your welcome :)
it is called an ore
Ore is rock from which a metal or valuable mineral can be extracted. Iron ore, copper ore are two examples.
well it could be igneous rock if you are talking about specific types (there are a lot) , but its called tephra and/or pyroclastic rock that is thrown from the volcano... the smallest of tephra is ash, then lapilli then bombs, then blocks.
ore
A valuable rock is a gem.
They are valuable because they are rare and take a long time to process to create a good looking stone. They are classified as "gemstones".
I think the answer you are looking for is bedrock. Hope I helped.. If I did, your welcome :)
it is called an ore
They are valuable because they are rare and take a long time to process to create a good looking stone. They are classified as "gemstones".
granite,limestone and slate
it's valuable because we burn it in power plants for energy
The word you are looking for may be "excavating".
Jade
coal is a valuble rock mined in Indiana
coal.
An ore is a rock that bears minerals containing valuable elements. Most rock can be considered to be an ore although the classification is usually reserved for rock that has sufficient concentrations of elements to make it worth mining and separating.