Shades of orange sometimes misspelled as "vermillion". Also known as "cinnabar" and in its deeper form known as "China red", vermilion is reddish orange, much like scarlet, only more orange than scarlet. It can be produced naturally (from the mineral cinnabar) and artificially. Cinnabar is a deep red-orange mineral, mercuric sulfide, HgS; the principal ore of mercury; the pigment vermilion is extracted from this ore. The web color "tomato" is a medium reddish-orange color that is the color of actual supermarket tomatoes. Many vine-ripened tomatoes are a bit redder. The color of tomato soup is slightly less saturated. The color "tomato" is displayed
Metal subsurface mines. In some cases, the sale price of the metal/s involved make it economically feasible to mine lower concentration sources. Once the ore is mined, the metals must be extracted, usually by chemical or electrolytic reduction. Pyrometallurgy uses high temperatures to convert ore into raw metals, while hydrometallurgy employs aqueous chemistry for the same purpose. The methods used depend on the metal and their contaminants. When a metal ore is an ionic compound of that metal and a non-metal, the ore must usually be smelted—heated with a reducing agent—to extract the pure metal. Many common metals, such as iron,