Moreover, the solids brought up by the water closely resemble in chemical composition the lava ejected from burning mountains, inasmuch as, besides containing a large percentage of silica and alumina, they likewise consist of lime, potash, soda, magnesia, and iron, as well as of a small proportion of other metals, as was guessed at by the beautifully varied green, rose, yellow, and purple hues of the beds of the streamlets flowing from the craters of the geysers.
"A Girl's Ride in Iceland"
Ethel Brilliana Alec-Tweedie
It contains the bicarbonates of lime, magnesia, and soda, silicates of lime and alumina, and the oxide of iron.
"The South of France--East Half"
Charles Bertram Black
The apocrenates of iron and manganese are slightly soluble; those of lime, magnesia, and alumina are insoluble.
"Peat and its Uses as Fertilizer and Fuel"
Samuel William Johnson