18.6.20

Mica Paint.

Manufacturer and Builder 5, 1893

According to Les Annales Techniques, a brilliant and unalterable paint can be prepared from mica in the following way: The mineral is lightly ignited and then boiled with hydrochloric acid to purify it, after which it is dried and pulverized. The powder, mixed with collodion, can be applied with a brush.

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