Hey if you are looking for a great book on prospecting for gold Check out: Fists Full of Gold by Chris Ralph: Quartz and Hard Rock Mining Miners have worked hard to dig gold from the solid hard rock quartz veins and other deposits of gold and silver. These web pages tell how they did it in the old days and how the technology was developed.
Quartz gold ore Quartz gold ore properties Gold exists in quartzite. Usually quartz appears as small stones in large cracks in riverbeds or mountain slopes and has crystals in different colors such as white yellow pink purple gray or black. The most common types of quartz with gold ore are rose quartz gold ore and rainbow gold ore.
Real gold is very heavy. If you have a piece of quartz with pieces of what you think is gold inside it try weighing it and compare the weight with a similarly sized piece of quartz. If the quartz with gold pieces in it weighs several grams more than a similarly sized piece of quartz it's possible that your quartz contains real gold.
This is a piece of gold ore from the famous Witwatersrand gold deposits of South Africa. The ore consists of conglomerate pebbles mostly of quartz in a sandy matrix with abundant pyrite in the cement. The gold which occurs in the cement but not in the pebbles is closely connected with the pyrite and is not visible to the naked eye.
Gold ore can resemble quartz with spotty areas of gold. According to the Environmental Protection Agency gold is commonly mixed (alloyed) with silver and other metals. The ore may therefore contain sulfides like arsenic copper iron and silver.