It is mined as the main ore of iron. Varieties include kidney ore, martite (pseudomorphs after magnetite), iron rose and specularite (specular hematite). While the forms of hematite vary, they all have a rust-red streak. Hematite is harder than pure iron, but much more brittle.t is mined as the main ore of iron. Varieties include kidney ore, martite (pseudomorphs after magnetite), iron rose and specularite (specular hematite). While the forms of hematite vary, they all have a rust-red streak. Hematite is harder than pure iron, but much more brittle.
A: One pound is equal to approximately 453.6 grams. Conversely, 1 gram is equal to 0.0022 pounds. The pound is a basic unit of weight in non-scientific instances or mass in scientific circumstances in the imperial system, which is the system primarily used by the United States.
Weight units pounds to grams conversion factor is 453.59237 (For troy pounds, it is 373.2417216). To find out how many grams in a pound, simply multiply by the conversion factor or use the calculator below. 1 Pound = 453.59237 Grams. 1 Troy Pound = 373.2417216 Grams. Pound is a unit of mass in imperial and U.S. customary systems.