Raw Hematite, Haematite, Iron(III) Oxide, Chemistry Sample, Mineralogy, Fe2O3

Descripción

What you will receive One 5ml glass vial of the mineral rough Hematite in a chunk like form as seen in pictures. Hematite is Metallic gray, dull to bright red mineral form of iron(III) oxide (Fe2O3) one of several iron oxides. It is mined as the main ore of iron. Varieties include kidney ore, martite, iron rose and specularite. Hematite is 5.5–6.5 on the Mohs hardness scale While the forms of hematite vary, they all have a rust-red streak. Hematite is harder than pure iron, but much more brittle. The mineral can precipitate out of water and collect in layers at the bottom of a lake, spring, or other standing water. Hematite can also occur without water, however, usually as the result of volcanic activity The name hematite is derived from the Greek word for blood αἷμα haima, due to the red coloration found in some varieties of hematite The color of hematite lends itself to use as a pigment. The red chalk writing of this mineral was one of the earliest in the history of humans. The mineral was first used 164,000 years ago by the Pinnacle-Point man possibly for social purposes. A recently developed process, magnetation, uses magnets to glean waste hematite from old mine tailings in Minnesota's vast Mesabi Range iron district. Falu red is a pigment used in traditional Swedish house paints. Originally, it was made from tailings of the Falu mine. Hematite has been found on Mars. Hematite's popularity in jewelry was at its highest in Europe during the Victorian era. Safety / Caution Keep out of reach from children! Do not ingest