To derive is defined as to come from, be created from or be developed out of something else. An example of derive is when you get the idea for a new fund raising event based on the event the previous year.
Rubidium: geological information. Rubidium is far too reactive to be found as the free metal in nature. It is relatively rare, although it is the 16th most abundant element in the earth's crust. Rubidium is present in some minerals found in North America, South Africa, Russia, and Canada. It is found in some potassium minerals (lepidolites, biotites, feldspar, carnallite), sometimes with caesium as well.
Who Discovered Rubidium. 02 Mar, 2012 Who discovered 0. Rubidium is a very soft, and highly reactive, silvery white metal. It is a chemical element with an atomic mass of 85.4678 and is represented by the chemical symbol Rb and the atomic number 37. It is the 23rd most common element in the crust of the Earth, but it is not widely mined because it has limited uses.