Plates of ferruginous limestone originated as so-called raft structures, precipitated on the surface
![Plates of ferruginous limestone originated as so-called raft structures, precipitated on the surface Destičky železitého vápence vznikly jako tzv. rafty na hladině občasného jezírka důlní vody.](https://webarchiv.lib.cas.cz:443/wayback/20190418160322im_/https://www.gli.cas.cz/en/system/files/users/public/zajic_5/gallery_assist/gallery_1229/prev/6.jpg)
Plates of ferruginous limestone originated as so-called raft structures, precipitated on the surface
Plates of ferruginous limestone originated as so-called raft structures, precipitated on the surface of an ephemeral lake of mineral water.