However, minerals and compounds containing potassium are common: It's the seventh-most abundant element in Earth's crust. Naturally occurring potassium salts such as saltpeter and potash have been ...

They found that the lunar samples are richer in the heavier element, potassium-41, than the Earth samples. A color mosaic of the Moon’s north pole. (NASA) These findings don’t support the ...

This droplet was the man-made sample of potassium to be prepared. first portion of potassium to be seen by man. Davy named the element after its much older term "potash". Potash is also known as ...