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Magnetic mineralogy and magnetic identification of minerals
1983Iron is a common accessory component of all rocks, but usually occurs as an oxide or hydroxide in terrestrial rocks. In meteorites and lunar samples, it occurs predominantly in an elemental form and native iron has been reported in some oceanic igneous rocks (Deutsch et al., 1977), although this is very exceptional.
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1986
Iron, the pre-eminent seat of magnetism in natural minerals (Section 2.2.4), is the fourth most abundant element in the Earth’s crust. Consequently it is an important constituent of the majority of rocks found at the Earth’s surface. Along with the commonest crustal metal, aluminium, it combines with the two most plentiful crustal elements, oxygen and ...
Roy Thompson, Frank Oldfield
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Iron, the pre-eminent seat of magnetism in natural minerals (Section 2.2.4), is the fourth most abundant element in the Earth’s crust. Consequently it is an important constituent of the majority of rocks found at the Earth’s surface. Along with the commonest crustal metal, aluminium, it combines with the two most plentiful crustal elements, oxygen and ...
Roy Thompson, Frank Oldfield
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Mineral Separation by an Electrochemical-Magnetic Method
Nature, 1951A SIMPLE method has been devised for the separation of minerals with a relatively high electrical conductivity in rock powders. It is based on the selective deposition upon these minerals of metallic iron, in an electrolytic cell, enabling them to be separated from the non-conducting grains with a magnet.
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1984
The primary source material from which the Earth’s crust is constructed is the volcanic and plutonic rock of the spreading centres of the ocean basins. The primary magnetic minerals of the crust are the minerals of such rocks. Just as the rocks are altered in the submarine environment, reworked at the subduction zones, weathered and eroded as ...
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The primary source material from which the Earth’s crust is constructed is the volcanic and plutonic rock of the spreading centres of the ocean basins. The primary magnetic minerals of the crust are the minerals of such rocks. Just as the rocks are altered in the submarine environment, reworked at the subduction zones, weathered and eroded as ...
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