the small patch i been working is drying out , with gold the bits found so far in gravel about 100mm to 200mm deep, under 50mm to 100mm top soil . moving outside the window i found a rough 0.8g bit of gold in a lump of light clay (i see these are often called a kinder surprise on you tube) anyone have any thoughts on how gold ends up suspended in light clay and not sink though to a harder layer .eg dose this mean that all ground in gold areas could have gold to be detected regardless of how deep to a hard layer ?