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A comment on Forgetting the Asbestos: Or, how we lose knowledge and technologies.. Parent comment
The problem is the geology of many talc deposits. Anywhere talc has formed metamorphically, it naturally co-occurs with asbestiform minerals. [1]
As a result, talc mined from these sources is unavoidably subject to asbestos contamination.
[1]: https://pubs.er.usgs.gov/publication/70027257
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The problem is the geology of many talc deposits. Anywhere talc has formed metamorphically, it naturally co-occurs with asbestiform minerals. [1]
As a result, talc mined from these sources is unavoidably subject to asbestos contamination.
[1]: https://pubs.er.usgs.gov/publication/70027257