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Geology
N
Alphabetical index
123
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Nebka
A nebka is a small wind-blown accumulation of sand occurring ...
Neoproterozoic
The Neoproterozoic is the third and last era of the ...
Nephelene-syenite
Nephelene-syenite is grained igneous rock composed mainly of ...
Nesosilicates
Nesosilicates are a group of silicates composed of ...
Ng, Np, Nm
Ng, Np, Nm are conventional notation for refractive indices ...
Nicol
A nicol is a device made from two sheets of calcite cut and ...
Nodular
Nodular describes mineral aggregates that outwardly look like tubers.
Norite
Norite is basic grained igneous rock, a variety of gabbro ...