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Earth and the Environment
Minerals, Mining, and Metallurgy
Mineralogy and Crystallography
Mineralogy and Crystallography
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pelite
Peridotite
Perovskite
Petrography
petroleum
phonolite
Phyllite
Phyllosilicates
pitchblende
Plagioclases
plaster of Paris
plug
Potash
prismatic
pseudomorph
pyrite
pyrolusite
pyroxene
pyrrhotite
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Research Categories
Earth and Environment
History
Literature and the Arts
Medicine
People
Philosophy and Religion
Places
Plants and Animals
Science and Technology
Social Sciences and the Law
Sports and Everyday Life
Additional References
Articles
Daily