Abstract: Process for producing mineral substance preparations with multiple components that contain a low level of or no contaminants wherein material of plant or animal origin is used and at least two different thermo-oxidative treatment steps in separate locations are carried out. Mineral substance preparations produced according to the invention are characterized in that they basically contain the mineral substances that the respective plant absorbs from the ground in a highly bio-available form, at the same time have a very low content of thermally-modified organic compounds. Not easily dissolvable a priori trace elements are therefore preferably in colloidal form, which is why biologic absorption is especially high.