From the piece:
There are 4 pieces of black and bright spot in a "porthole",
very attractive and easily manageable.
With a soft magnetism not dangerous to handle.
When the pieces together emit a loud snap,
always the same sound. For having been magnetized,
these areas of hematite may well be used to collect
soil keys or coins that contain iron or steel,
as well as nickel is also attracted.
From ore:
Oligisto Variety is presented with three color variations:
red or red Hematite, often in powder,
known as ocher, better known as the brown and black Limonite,
more plentiful, with the presence of titanium.
Its name comes from the Latin HAIMATITES (blood)
in allusion to vivid red color of its powder.
When they leave a black line reveals the presence of a high content of titanium.
Difficult to distinguish from ilmenite,
although a qualitative chemical analysis would be effective.
The Hematite is Fe2O3 or FeFeO3 formula, says a chemical.
The Ilmenite is a titanium oxide by FeTiO3 formula.
Laminated glass is fragile.
It presents no peel.
Its hardness is 5-6, and density 5.26.
It is soluble in concentrated hydrochloric acid.
The Hematite is one of the most beautiful and
sought after minerals of alpine areas,
both when present in perfect crystals and individualized,
as it is presented as "Pink Iron".
Towns famous worldwide for having supplied copies of
"Iron Rose" are located in the zone of the Gotthard Pass (mountain Prose, The Fibbia).
In the intense search activity,
which has been extended by many years in these places,
finding good specimens are becoming less common, and
has only been possible thanks to new excavations
for the construction of roads or hydroelectric works.
Among the most famous places are located next to Twin Peaks Kanosh,
Utah, where octahedral crystals were found nearly a decimeter entado side.
Beautiful specimens are those from Cerro de Mercado,
near Durango, Mexico (a town famous for its splendid apatite).
In Spain is in Somorrostro (Vizcaya) and
Cabárceno (Cantabria, today a Nature Park).
The photo of ...