Minerals
Minerals are naturally occurring inorganic substances with a specific chemical composition and crystalline structure. They are the building blocks of rocks and are classified by their chemical composition and crystal system.
Showing 1-60 of 5,084 specimens
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Abellaite
Abelsonite
Hardness: 2 - 3
Abenakiite
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Abenakiite-(ce)
Hardness: 4 - 5
Abernathyite
Hardness: 2.5 - 3
Abhurite
Hardness: 2
Abramovite
Abswurmbachite
Hardness: 6.5
Abuite
Acetamide
Hardness: 1 - 1.5
Achalaite
Hardness: 5.5
Achavalite
Hardness: 2.5
Achyrophanite
Acmonidesite
Acuminite
Hardness: 3.5
Adachiite
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Adamsite-(y)
Hardness: 3
Adanite
Addibischoffite
Adelite
Hardness: 5
Admontite
Hardness: 2 - 3
Adolfpateraite
Hardness: 2
Adranosite
Adranosite-(fe)
Adrianite
Aegirine-augite
Hardness: 6
Aenigmatite
Hardness: 5.5 - 6
Aerinite
Hardness: 3
Aerugite
Hardness: 4
Aeschynite-(ce)
Hardness: 5 - 6
Aeschynite-(nd)
Hardness: 5 - 6
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Aeschynite-(y)
Hardness: 5 - 6
Afmite
Afwillite
Hardness: 3 - 4
Agaite
Agakhanovite-(y)
Hardness: 6
Agardite
Agardite-(ce)
Hardness: 3 - 4
Agardite-(la)
Hardness: 3 - 4
Agardite-(nd)
Hardness: 3 - 4
Agardite-(y)
Hardness: 3 - 4
Agmantinite
Hardness: 2 - 2.5
Agrellite
Hardness: 5.5
Agricolaite
Hardness: 4
Agrinierite
Aguilarite
Hardness: 2.5
Aheylite
Hardness: 5 - 5.5
Ahlfeldite
Hardness: 2 - 2.5
Ahrensite
Aikinite
Hardness: 2 - 2.5
Aiolosite
Airdite
Ajoite
Akaganeite
Akaogiite
Akatoreite
Hardness: 6
Akdalaite
Hardness: 7 - 7.5
Akhtenskite
Akimotoite
Aklimaite
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