Is Pyrite dangerous in Shungite?
This fear of the pyrite found in Shungite is unfounded. Shungite has been used in Russian water purification systems since the 1990's, replacing carbon filters. After thousands of years of people drinking Shungite water from Lake Onega, the only results was Peter the Great building a medical facility because of the healing qualities of the lake.
Where this fear of pyrite appears to come from a website post entitled “The 9 Deadliest Minerals We've Ever Mined” and includes pyrite.
Pyrite contains sulfur in some locations, by pyrite mining to obtain sulfur, it resulted in sulphide mine tailings poisoning local water. Pyrite by itself is not harmful. Pyrite with veins of sulfur can cause a problem.
On the other side Shungite.com states:
“Shungite has the ability to clean water from almost of all organic compounds (including pesticides), metals, bacteria and harmful microorganisms.
The water from Lake Onega in Russia, can be used for drinking without any prior cleaning! It's the result of thousands of years of interaction with Shungite. The commercial use of Shungite filters started back in 1990’s, during that time, many experiments and studies were conducted on Shungite influencing health on the human body. Scientists came to the conclusion that Shungite water is absolutely non-toxic.”
At Shungite.com there is this statement:
"Quartzite and pyrite are natural components of classical shungite. They are unevenly distributed in the stone and are well visible. While treating shungite water and other uses of shungite – the content and quantity of these insertions does not have matter."
They defend this position with the following:
Certificate and protocol issued by an independent laboratory
in Berlin (in German).
"We have been regularly studying the shungite water prepared using our shungite stones in an independent laboratory in Berlin since 2009. The certificate parameters confirm compliance with all the sanitary statutory requirements to foodstuffs in Germany."