The most common ore of this element is named for its blood-red color and another is named for its most distinctive property and is also known as lodestone.
Inclusions of this element's ore in amethyst are known as "beetle's legs" and a form of quartz that resembles citrine is known in German as this element's "keisel" or pebble. At the opposite end of a series as Phlogopite, Annite is the form of Biotite Mica most rich in this element. The hydroxide of this element, Goethite, has been used as a pigment and the Fountain paint pots at Yellowstone are colored by its different (*) oxidation states.. Proterozoic layers of sedimentary rocks that alternate between this element's ores and silcates are known as banded [this element] formations. The most common ore of this element is named for its blood-red color and another is named for its most distinctive property and is also known as lodestone. For 10 points, name this element whose ores include hematite and magnetite which forms the earth's core along with nickel.
Inclusions of this element's ore in amethyst are known as "beetle's legs" and a form of quartz that resembles citrine is known in German as this element's "keisel" or pebble.
iron [accept ferrum]