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.
Most commonly, galena.
Graphite
its mined by coal im 99.9% sure
Three different types of Opal are found in Australia:Fire Opals are mined in South Australia near Coober Pedy.Black Opals are mined in New South Wales near Lightning Ridge.Boulder Opals are mined in the western Queensland.
Tanzanite can only be founded in Africa's Rift Valley. It is about 25 miles from Mt. Kilimanjaro in Tanzania, in an area called Marerani. There are four actively mined tanzanite blocks labeled A-D. A and C block are reserved for foreign investment, while B and D can mine mined by locals.Gingerbread2480-I believe you are wrong, according to the information I have gathered Tanzanite is in fact mined in the Merelanihills.
Kaolin and ball clays were most often mined by directing hydraulic high-pressure jets of water on the clay faces of open pits, loosening the soft clay from the deposit.
no es un oxido soico
Coal and lead can be mined in Iowa.
Lead and silver were mined at Leadhills and, for a time, gold was also mined there.
Fluorspar, lead, coal, and zinc are mined in Illinois.
lead
The main lead mineral is galena (PbS), which contains 86.6% lead
Lead is a naturally-occurring element that is mined from underground.
Lead
Lead and other metals (zinc, copper, and silver) are mined by the Black Mountain mine at Aggenys, about 65 km west of Pofadder.
The element lead is part of the Earth. The lead that we use in everyday things is mined from the Earth.
zinc lead
The value of mined lead in 2003 totaled $435 million
Although most of England's mineral reserves have now been mined out, in the past coal, oil, clay, stone, tin, copper, lead and iron were mined.