There is no standard lot size. However, some cities have similar lot sizes for houses. In Southern California, it's not uncommon for lots to be about 50' X 100', or about 5,000 square feet, in size. That's less than 1/8 acre, since an acre is something over 42,000 square feet. Some cities require that lots be of a certain size or higher before a second dwelling can be erected there, or restrict the square footage of the house on the lot to some proportion of the lot area.
Gold ores can be categorized under four broad heads: free milling ores, refractory ores, preg-robbing ores and complex ores. According to the different gold ore types, Zenith can design different models of gold ore crusher or gold crusher for different crushing process. Jaw crusher is usually used as primary gold crushing and impact crusher or gyratory crusher is applied widely as secondary crushing process.
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%).