Greensand

Alternate Names: Glauconite

Oxide	Analysis	Formula
SiO2	100.00%	1.00
Oxide Weight		60.10
Formula Weight		60.10

Notes

A gropu of minerals with a wide range of chemical analyses, having from 2-15% LOI, 35-65% silica, 5-30% alumina, plus CaO (up to 15%), MgO (up to 3.5%), K₂O (up to 7%), Na₂O (up to 5%).

By Tony Hansen
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