Curcumin, the principal curcuminoid found in turmeric, is generally considered its most active constituent (1) . Other curcuminoids found in turmeric include demethoxycurcumin and bisdemethoxycurcumin. In addition to its use as a spice and pigment, turmeric has been used in India for medicinal purposes for centuries.
Types of Ore. Ore is rock that contains economic amounts of a particular element, e.g. gold ore, iron ore, molybdenum ore, or praseodimium ore. In contrast, rock that is not judged to contain economic quantities of an element is categorized as waste rock.The metals in ore can occur in many different minerals (compounds) in the rock.As an example, copper occurs in more than 50 minerals with varying percentages of copper in the chemical formulas of those minerals. The richest grade of copper ore is native copper, which is pure copper (100%).he metals in ore can occur in many different minerals (compounds) in the rock. As an example, copper occurs in more than 50 minerals with varying percentages of copper in the chemical formulas of those minerals. The richest grade of copper ore is native copper, which is pure copper (100%).
Gold ore (size: 7.5 Ã 6.1 Ã 4.1 cm). Cart for carrying ore from a mine on display at the Historic Archive and Museum of Mining in Pachuca, Mexico. An ore is a type of rock that contains sufficient minerals with important elements including metals that can be economically extracted from the rock.The ores are extracted from the earth through mining; they are then refined (often via smelting) to extract the valuable element, or elements.old ore (size: 7.5 Ã 6.1 Ã 4.1 cm). Cart for carrying ore from a mine on display at the Historic Archive and Museum of Mining in Pachuca, Mexico. An ore is a type of rock that contains sufficient minerals with important elements including metals that can be economically extracted from the rock.