Glacial drift is a sedimentary material that has been transported by glaciers. It includes clay, silt, sand, gravel, and boulders transported by a glacier.
Metamorphic rocks are formed at a depth of 12 to 16 km beneath the Earth’s surface, where high temperature, pressure and chemical alterations cause transformation of pre-existing rocks into another type of rock.
Intrusive igneous rocks are formed by the intrusion of magma into older rocks deep inside the Earth’s crust, which then solidifies slowly within the crust. Intrusive rocks are coarse-grained such that the interlocking mineral crystals can be easily identified with the naked eye.
Limestone is a sedimentary rock primarily made of minerals such as calcite and aragonite.
As nearly 70% of the earth’s surface is made up of water and mineral resources are severely depleted on land, several mining companies are exploring the concept of deep sea mining.
By Alexander Chilton
10 Sep 2014
Igneous rocks, also called fire rocks, are formed either underground (intrusive) or above the ground (extrusive). The name igneous is derived from the Latin word ignis meaning fire.
Barbertonite has been named after the Barberton district in South Africa, where it occurred first. It forms a dimorphous series with stitchtite. This mineral belongs to Manasseite group.
Balangeroite was named by For the Balangero mine, Piedmont, Italy.
Balkanite was named after the Balkan Mountains where the mineral was first located.
Balipholite was named for its composition consisting of BArium and LIthium in the composition, and the Chinese word for fibrous in allusion to the mineral’s structure.