There are extensive deposits of iron ore (magnetite and hematite) in the province of Bulacan, Luzon.
High, rich in hematite iron ore; valuable limestone deposits are found some 30 m.
Gothite occurs with other iron oxides, especially limonite and hematite, and when found in sufficient quantity is mined with these as an ore of iron.
It lies in the midst of the great red and brown hematite iron-ore deposits of the Mesabi Range - the richest in the Lake Superior district - and the mining and shipping of this ore are its principal industries.
In addition, iron ores (almost all brown hematite) occur abundantly, and all material for making steel of excellent quality.
HAEMATITE, or Hematite, a mineral consisting of ferric oxide (Fe203), named from the Greek word -aiµa, "blood," in allusion to its typical colour, whence it is called also red iron ore.
Where the Coal Measures reach the sea at Whitehaven, there are coal-mines, and the hematite of the Carboniferous Limestones has given rise to the active ironworks of Barrow-in-Furness, now the largest town in the district.
The beds of magnetite and hematite, in the southern portion of the Wasatch Mountains, are the largest in the western United States; in 1902 the four productive mines in Milford, Juab and Utah counties produced 16,240 tons of ore, valued at $27,417.
That part of Furness which forms a peninsula between the Leven estuary and Morecambe Bay, and the Duddon estuary, is rich in hematite iron ore, which has been worked from very early times.
The hematite is also worked at Ulverston, Askam, Dalton and elsewhere, but the furnaces now depend in part upon ore imported from Spain.
The deposits of most commercial importance are the limonites and brown hematites found west of the Cumberland Plateau, and the fossiliferous red hematite which crops out along the eastern base of that plateau.