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Earth and the Environment
Minerals, Mining, and Metallurgy
Mineralogy and Crystallography
Mineralogy and Crystallography
gypsum
hardness
hematite
hexagonal
Hornblende
hypersthene
ilmenite
Industrial minerals
Influx
Ion exchange
Iron ores
jade
Jadeite
Jasper (city)
kaolinite
Koh-i-noor
Komatiite
kyanite
labradorite
lapis lazuli
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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
