Volcanic activity. Try http://gsa.confex.com/gsa/2001AM/finalprogram/abstract_21743.htm and http://www.springerlink.com/content/r86810n0618t030r/ and http://www.galleries.com/minerals/oxides/hematite/hematite.htm and http://www.mindat.org/min-1856.html and wiki's own: http://en.wikipedia.org/wiki/Hematite.
Yes, other minerals can scratch hematite. Hematite has a hardness of 5.5-6.5 on the Mohs scale, so minerals with a higher hardness (like quartz or corundum) can scratch hematite.
The word equation for the reaction when iron forms hematite in the Earth is: Iron + Oxygen → Hematite.
Magnetite belongs to the spinel group of minerals
Hematite is a type of iron ore, if you grind it into a fine powder it makes the natural pigment ochre which is used by native people in southern and east Africa (mixed with fat) to adorn their bodies. Hematite can also be used to make a form of black shiny jewelery. == ==
Bauxite and hematite are called ores, since they both produce useful minerals.(Bauxite - Aluminum)(Hematite - Iron)
Scientists think they made Mirrors out of Hematite.
Hematite is a mineral composed largely of iron. Hematite rosary beads would be beads made of hematite used for a rosary.
A ring made of hematite. Hematite is the mineral form of iron and is a dark gray color, sometimes magnetic.
hematite
Hematite is a mineral known for its metallic luster and black to silver-gray color. It has a high density and is often magnetic, attracting objects made of iron. Hematite is also used in jewelry and as a pigment due to its vibrant red color when powdered.
hematite
they made mirrours i think
Yes, hematite is an iron mineral, the oxide Fe2O3.
Hematite is an ore of iron.
Yes, hematite is a mineral.
Hematite intermixed with Goethite is also known as Rainbow Hematite and is wonderfully iridescent.
no, it is naturally found in hematite ore under the earths surface