One Rock. This is a natural silics as taken from the mine in Gate, Oklahoma. It is used in the manufacture of China Ware. Another use is scouring powder. Gate is just south of Englewood, Kansas.
Pre Historic
- Phacops rana
- Pioneer-Krier Museum
silica
BLD2-F\BLD2-F-18-CASE\1800.003.0233.JPG
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