dark urine
Iron or materials containing iron will rust into oxides, either Fe2O3 (light brown) or Fe3O4 (dark brown).
Wash them and when you iron afterwards lay a sheet of brown wrapping paper between the iron and clothing.
It's the iron pills. Iron pills can also make your urine quite dark. Drink lots of water. Nothing to worry about.
If a rock has iron in it, the iron can rust when exposed to air and moisture. That will look brown or dark orange.
An anthophyllite is a dark brown amphibole mineral, a mixed silicate of iron and magnesium.
No, it can be a sign of dehydration/too much iron.
Iron is principally responsible for making olivine, pyroxene, amphibole, and biotite dark in color. Iron impurities in these minerals can give them a dark green, black, or brown coloration.
you don't have enough iron so take some iron tables after a meal
Each person is an individual and there is no documented reason why a person would feel worse after an iron infusion other than your body trying to adjust to the higher levels.
It is either Magnesiun oxide or Iron oxide
A biotite is a variety of dark brown mica, a mixed aluinosilicate and fluoride of potassium, magnesium and iron.