magnetite
magnetite crystals from Russia
Detailed sheet
magnetite
Known since antiquity, Pliny the Elder mentioned it in the year 77, it was identified in 1845 by von Haidinger.
It is named after the Greek “magnes”, which means magnet, it is found on Mount Magnetos in Greece.
It is a naturally magnetic iron oxide that has highlighted the phenomenon of magnetism since the Iron Age.
Heated over 580 ° C, it loses its magnetism … that gets back once cooled.
CHEMICAL CHARACTERISTICS
Fe3O4
magnetic iron oxide
PHYSICAL CHARACTERISTICS
Main color
black
Other colors
grey
sometimes iridescent bluish reflections, due to oxidation
Color of streak
brown, black
Luster
metallic
Hardness
5.5 to 6.5
Density
5.00 to 5.50
Cleavage
indistinct
Fracture
conchoidal
OPTICAL PROPERTIES
Transparency
opaque
Refractive index
2.420 - 0.000
Double refraction
0.000
none, isotropic
visible double refraction
No
Pleochroism
absent
Number of colors
1
Fluorescence
none
CRYSTALS PROPERTIES
sometimes big size octahedral
crystals system
cubic
OTHER INFORMATIONS
Astrological sign
Aries, Taurus
APPROACHING GEMS
Exploited
sites
It is found distributed throughout the world, even in Antarctica. This is a major iron ore.
use in jewelry
cut in facets or cabochon it’s a collection stone
Daily care
and precautions
sensitive to schocks
imitations and
treatments
I easily distinguished from hematite, which is not magnetic.
Historical
healing properties
His natural magnetism makes it a stone different from the others and, since its discovery in ancient Greek, it was awarded of magical powers. It was thought that its powerful waves acted directly to the brain and would contribute to mental health … His magnetism would bring order in the flow of the body energy and would help it to remain well oriented.
Other
Gems
Venez visitez
notre site web
voillot-joaillier.fr
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