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Greensand (glauconitic sandstone)
Greensand (glauconitic sandstone)
Occurrence of glauconitic siltstone in the Serra da Saudade ridge, in the Alto ParanaĆ­ba region, Minas Gerais, Brazil
Occurrence of glauconitic siltstone in the Serra da Saudade ridge, in the Alto ParanaĆ­ba region, Minas Gerais, Brazil
A sample of Cretaceous greensand from near Swanage, Dorset
A sample of Cretaceous greensand from near Swanage, Dorset
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Glauconite pellets and small fossils among quartz grains in greensand from the Dutch Pliocene
Glauconite pellets and small fossils among quartz grains in greensand from the Dutch Pliocene