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Geology
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Slip face
Slip faces are plane faces that appear in the crystal ...
Soda straws
Soda straws are narrow hollow concretions that grow from the ...
Sodium-rich rock
Sodium-rich rock is an alumino-potassic rock rich in sodium.
Sodolithic
Sodolithic describes pegmatites rich in minerals containing Na and Li.
Soil pit
A soil pit is a hole made to observe the soil.
Sorosilicates
Sorosilicates are silicates composed of SiO4 tetrahedra ...
Span-wise ice accretion
A span-wise ice accretion is a long narrow strip of ice floe ...
Spar
Spar is an old mineralogical term denoting various ...
Speleogenesis
Speleogenesis is the study of the formation of natural ...
Speleology
Speleology is the scientific or recreational study of a ...
Spherolite
A spherolite is a sphere-shaped stone
Spinel structure
The spinel structure is a common crystal structure of the AB ...
Stalactite
A Stalactite is a concretion formed from water dripping from ...
Stalactite form
A stalactite form denotes mineral aggregates in the form of ...
Stalagmite
A stalagmite is a concretion formed from water dripping on the ground.
Stalagmitic floor
A Stalagmitic floor is a deposit of stalagmite material on ...
Stratification
Stratification is the superimposition of sedimentary rocks. ...
Stratified
Stratified means showing alternating strata or layers of sediments.
Stratiform
Stratiform describes mineral deposits in which the minerals ...
Stratum
A Stratum is a layer, a bank, a sedimentary deposit bounded ...
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