How it all began
In the spring of 1981, some stone chipping material was being used to surface a forest road. It quickly became apparent that this material had certain special properties. The dust that formed when spreading the stone chips on the roadway also settled on the ground and trees either side of the road. Heavy rainfall then caused this dust to soak into the ground, along with the rainwater. Shortly afterwards, some of the fir trees that had already been marked for felling became green once more.
Mr Robert Schindele Sr was initially amazed by this and turned to scientists for an explanation. Following analysis of the rock, the scientists told him: it was the minerals in the rock that had caused the trees to become green again. After experimenting on himself, one of the scientists also succeeded in proving the effects of these minerals on the human body.
Extraction of the raw material is performed mechanically (without the use of explosives) using an excavator, and breaking and milling is based on the lunar calendar. The finely milled minerals (95% PoD 90µ) are then transferred into tins or vegetarian capsules directly from the silo, without any additives.
Schindele's Mineralien™ rock powder is a 100% natural product, so minor fluctuations in the quantities of individual substances can occur.
Deposit and composition
Schindele’s Mineralien™ rock powder is obtained from a volcanic cone of metamorphic paragneiss. This rock contains amphibolite facies formed during the fracturing of the earth’s crust. Rock of this particular composition can be found nowhere else in the world.
The efficacy of the rock powder was up to now deemed to depend on both its mineral content and the solubility of minerals, or their conversion into other minerals respectively, when specific atoms and molecules are released. Latest findings, however, show that the adsorption of the milled rock powder is responsible for its effect.
Source: Expert opinion of Dr Erik Mikura, engineering geologist
Expert opinion of Dr Rüdiger Butz-Braun, 2015
The kaolinite most likely formed through feldspar weathering. The smectite, which is the predominant mineral in bentonite is largely formed from biotite, which is rich in Fe (²+,³+) and Mg. The presence of smectite proves that the rock is already weathered to some extent. Aside from smectite, which is known for its excellent cation-exchange capacity, biotite is also present. The latter is soluble in hydrochloric acid and thus also in gastric acid, releasing iron (²+,³+) and magnesium. It is essential that the extraction of rock material, which is available in fine powder form, should take place on a continuous basis, as this increases the action area or point of contact between the acids and minerals. The combination of the paragneiss formation under specific tectonic conditions followed by not-too-intensive weathering has enabled the rock to be excellently preserved. The formation of smectite alongside the simultaneous preservation of biotite, is likely a rarity.
Source: Dr Rüdiger Butz-Braun,
Consultation on the use of minerals and clay