NOVELTY - The collector has a set of heat exchange cylinders (8) withstanding high temperatures and pressures and installed with or without a set of protective casings (6). An insulated exchange chamber (10) receives pumped or non-pumped fluid. An energy laden fluid and vapor or steam are collected in the chamber for thermal mixing and discharge. The laden fluid is available to directly or indirectly add heat energy to a device e.g. depressurized mixing container (DMC) (4), or to drive a steam turbine (16) for generation of electricity or for direct or indirect use e.g. food processing.    USE - Geothermal energy collector (GEC) for use with a geothermal energy exchanger in a geothermal fluid heating or steam production system (all claimed) for electricity generation application and direct or indirect use e.g. food processing and heating of building or pre-heat boiler fluid at a power plant.    ADVANTAGE - The collector entirely eliminates the need for direct contact with or exposure to geothermal fluids and gases or other potentially contaminated material in an effective manner. The collector does not have multiple moving parts below a ground, thus safely utilizing in multiple geothermally active areas. The collector maximizes use of gravitational forces such that height, weight and greater density of relatively cooler temperature fluids is used to cause a settling action or flow of fluid generally downward within the collector to be driven by fluid pressure to the container. The collector eliminates or reduces pumping costs when a set of topographic site conditions is optimum.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following:    (1) a geothermal fluid heating or steam production system comprising a set of depressurized mixing containers    (2) a geothermal electricity production method    (3) a geothermal heat energy method.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a geothermal energy collector in a geothermal fluid heating or steam production system for an overall electricity production.    Depressurized mixing container (4)    Protective casings (6)    Heat exchange cylinders (8)    Insulated exchange chamber (10)    Steam turbine (16)