floatstones

Updated: May 1, 2025

The tabasheers must be studied in their relations on the one hand with certain varieties of the natural semi-opals, hydrophanes, beekites, and floatstones, some of which they closely resemble in their physical characters, and on the other hand with specimens of artificially deposited colloid silica formed under different conditions. Prof.

Various - Scientific American Supplement, No. 595, May 28, 1887