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.
The following is a list of definitions relating to conversions between pounds and grams. A pound is a unit of mass in both US Customary Units as well as the Imperial System. The symbol for pound is lb or lbs. There are 0.00220462 pounds in a gram. A gram is a unit of mass in the Metric System. The symbol for gram is g. There are 453.59237 grams in a pound.