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.
Hard rock miners look for quartz veins and specific types of rocks that often contain gold such as Dolomite, Schist, Gneiss, Quartz, and Black Shale. Specific minerals and certain basic elements are also a clue as to where to find gold.lacer gold is the gold that most weekend prospectors look for because it has been concentrated over a long period of time and is fairly easy to find if you are in a gold bearing area. Gold that is found in solid rock within the earth is called load gold.