Yes, uranium ores are available in many countries.
Uranium ore is not...uranium ore !
An important ore of uranium is called Pitchblende.
Uranium ore mining don't release geothermal power.
Silver is not extracted from uranium ores.
Your Mother
Uraninite, AKA pitchblende, is an ore of uranium.
copper
Uranium,titanium and iron
It is an ore of uranium.
no
It is an ore of uranium.
A Wikipedia article (see link below) gives the concentration of uranium in ore as 0.01 to 0.25 percent, which is a wide range. If we take 0.1 percent as typical, then 1 tonne (1000Kg) of ore would produce 1 Kg of uranium. This is natural uranium, which is normally enriched by about six times to produce suitable enriched uranium for fuel, so you can say that about 6 tonnes of ore would be needed to give 1 Kg of enriched uranium, but there is considerable variation of this from one source of ore to another