Difference between Uraninite and Pitchblende

What is the difference between Uraninite and Pitchblende?

Uraninite as a noun is any of several brownish-black forms of uranium dioxide, uo2, (especially pitchblende) that is the chief ore of uranium; it is isomorphous with thorianite. while Pitchblende as a noun is a variety of the mineral uraninite.

We hope you now know whether to use Uraninite or Pitchblende in your sentence.