Mineral paint is often used in Europe to mean potassium silicate paint. Do a google search for 'mineral paint' and a few companies will come up - Keim being the most well known.

Potassium silicate is silica sand which has been dissolved. When it 'cures' it forms tiny crystals of silica. It is also very alkaline, and you can only use pigments which are tested and proven for lime - fresco pigments.

You have to find potassium silicate, mix it with water up to three times - thats it - no fumes, fireproof, kills algae -etc. I use it a lot up here in Canada. Joes uses it in Australia. It also allows concrete to breathe - our City Hall in Vancouver is painted with this stuff.

Rather than being some new gimmic - it is just the opposite - it is just so simple - like lime wash - no one can figure how to make money at it.