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.
1 pound = 453.59237 gram. 1 pound = 453.59 grams 1 gram = .0022046 pounds = 1/453.59 pounds (approx). For the best answers, search on this site https://shorturl.im/EBncz There are 453.5924 grams per pound. It should be noted that generally, a gram is a unit of mass and a pound is a unit of weight. So to do this carefully, one has to actually specify what value of gravity is being used. Conventionally, this is taken to be standard gravity g=9.80665 m/s^2, leading to 1 pound = 453.59237 grams. Also, there a confusing array of types of pounds, including avoirdupois, troy, tower, merchant, metric and London pounds (see reference).