Iron is an element, represented by the symbol Fe. There is not technically a "chemical formula" for iron because it is an element.
The crust is presumed to be com- posed primarily of rocks containing feldspar, calcium aluminum silicate, and lesser pyroxene,iron and magnesium silicate; the crust also contains basalt in the mares, which con- tains less iron and more titanium than earth basalt. The mantle is thought to be made up of calcic peridotite, containing both pyroxene and feldspar.
IRON PYROX POWDER
Description
A Greyish Black Powder
Fe S Content
70 to 75 %
S Content
26 to 30 %
Density
4.7 to 4.9 gm/cm3
Mesh
-200 Mesh.
IRON PYRITE
Sulphur (s)
51%
Iron (Fe)
46%
Copper (cu)
0.03%
Zinc
0.08%
Lead (Pb)
0.01%
Arsenic (as)
0.03%
Silica (SiO2)
0.4%
Alumina (Al2O3)
0.3%
Moisture
6%
Sieve Analysis
<0.5mm
100%
C0.074mm approx
65%