English Deutsch Français Italiano Español Português 繁體中文 Bahasa Indonesia Tiếng Việt ภาษาไทย
All categories

2007-01-23 18:53:56 · 3 answers · asked by Janelle Alexandria 3 in Environment

3 answers

Weipa in Queensland has one of the largest open cut mines in the world, mining 15 million tonnes of the ore anually

2007-01-23 19:02:12 · answer #1 · answered by nick_75au 1 · 0 0

Bauxite is the third most common element in the earths crust. It is formed from the heating of moist clays. It is made into aluminum. The tropics are the most common location but here is some ideas of where you will find it.

Bauxite is found in four types of deposit: blanket, pocket, interlayered and detrital. The major bauxite deposits of the World are found in the tropics and in the Caribbean and Mediterranean regions. Today most bauxite mining locations are in the Caribbean area, South America, Australia and Africa.

Large blanket deposits occur in West Africa, Australia, South America and India. These deposits occur as flat layers lying near the surface and may extend over an area covering many kilometres. Thickness may very from a metre or less to 40 metres in exceptional cases although 4-6 metres is average.

In both Jamaica and Hispaniola, as well as in Southern Europe, bauxite is found in pocket deposits. The size of these depressions range in depth from less than one metre to more that thirty. In some cases each pocket is isolated, while in others areas the depressions overlap and compose one large deposit.

Interlayered deposits are found in the United States, Suriname, Brazil, Guyana, Russia, China, Hungary and the Mediterranean area. They originally existed at the surface as other types of rocks or volcanics. These formations are usually more compact than in other

2007-01-23 18:58:24 · answer #2 · answered by searay092003 5 · 1 0

australia

2016-01-27 15:14:22 · answer #3 · answered by Everard 1 · 0 0

fedest.com, questions and answers