2006-09-13 11:49:28 · 6 answers · asked by mina 1 in Science & Mathematics ➔ Earth Sciences & Geology
Because minerals are, by definition, natural, inorganic, solid crystalline substances, there are NO minerals in magma (magma is liquid). Once it hardens, however, the major minerals that form are quartz, various feldspars, amphiboles, pyroxenes (both of which include several silicate-type minerals), and mica (any of several types). Major ELEMENTS in magma are: silicon, oxygen, magnesium, calcium, sodium, and iron.
2006-09-13 14:34:21 · answer #1 · answered by David A 5 · 1⤊ 1⤋
That depends... different volcanos have magma of different compositions depending on what types of rock are being melted at the fault line.. as for the magma inside the centre of the earth, nobody knows, we dont see it until it comes out. It is probably safe to say that all types of minerals are in magma at one time or another.
2006-09-13 13:08:49 · answer #2 · answered by Kelly + Eternal Universal Energy 7 · 0⤊ 0⤋
I am not aware of magma within the Earth's mantle. The mantle is not molten though due to temperatures and pressures, it is somewhat plastic.
2006-09-13 13:20:39 · answer #3 · answered by JimZ 7 · 0⤊ 0⤋
The list is extensive. There are about 150 minerals "commonly found" & about 50 others "uncommonly found" out of a total possible 4,000 kinds of mineral. Of these, 60% are some form of feldspar.
2006-09-13 13:28:09 · answer #4 · answered by WikiJo 6 · 0⤊ 0⤋
Any and all minerals that happen to get in the way of the intense heat and get melted by it.
2006-09-13 11:51:44 · answer #5 · answered by gorbasche2 2 · 0⤊ 0⤋
Lava
2006-09-13 11:53:36 · answer #6 · answered by t(-_-)y 3 · 0⤊ 0⤋