Description
MAGNETITE SPECIMEN
This is the raw magnetite specimen with chlorite. Dimensions: 2 x 2 x 0.8″ (5 x 5 x 2cm). Weight – 3.1oz (88 grams). Origin: Russia, Irkutsk Oblast.
Some information about magnetite:
Magnetite is a mineral and one of the main iron ores. It is one of the oxides of iron, and is ferrimagnetic. It attracted to a magnet and can magnetized to become a permanent magnet itself. With the exception of extremely rare native iron deposits, it is the most magnetic of all the naturally occurring minerals on Earth.
Magnetite is black or brownish-black with a metallic luster, has a Mohs hardness of 5–6 and leaves a black streak. Small grains are very common in igneous and metamorphic rocks.
In addition to igneous rocks, it also occurs in sedimentary rocks, including banded iron formations and in lake and marine sediments as both detrital grains and as magnetofossils. Magnetite nanoparticles also thought to form in soils, where they probably oxidize rapidly to maghemite (More information about magnetite).
Here you will find other magnetite specimens >>>
