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 181-240 of 5,084 specimens
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Andrianovite
Hardness: 5
Anduoite
Hardness: 6.5 - 7
Andychristyite
Hardness: 2 - 3
Andymcdonaldite
Andyrobertsite
Hardness: 3
Angarfite
Hardness: 2.5
Angastonite
Hardness: 2
Angelellite
Hardness: 5.5
Anhydrokainite
Anilite
Hardness: 3
Ankinovichite
Hardness: 2.5 - 3
Annite
Hardness: 2.5 - 3
Anorpiment
Hardness: 1.5
Anorthite
Hardness: 6 - 6.5
Anorthominasragrite
Hardness: 1
Ansermetite
Hardness: 3
Antarcticite
Hardness: 2 - 3
Anthoinite
Hardness: 1
Anthonyite
Hardness: 2
Anthophyllite
Hardness: 5.5 - 6
Antigorite
Hardness: 3.5 - 4
Antimonselite
Hardness: 3.5
Antimony
Hardness: 3 - 3.5
Antipinite
Hardness: 2
Antitaenite
Antlerite
Hardness: 3.5
Antofagastaite
Hardness: 3
Anyuiite
Hardness: 3.5
Anzaite-(ce)
Apachite
Apatite
Hardness: 5
Apexite
Hardness: 2
Aphthitalite
Hardness: 3
Apjohnite
Hardness: 1.5 - 2
Aplowite
Hardness: 3
Apophyllite
Hardness: 4.5-5
Apuanite
Hardness: 4 - 5
Aqualite
Hardness: 4 - 5
Aradite
Arakiite
Hardness: 3 - 4
Aramayoite
Hardness: 2.5
Arangasite
Hardness: 1 - 2
Arapovite
Hardness: 5.5 - 6
Aravaipaite
Hardness: 2
Aravaite
Arcanite
Hardness: 2
Archerite
Hardness: 1 - 2
Arctite
Hardness: 5
Arcubisite
Ardaite
Hardness: 2.5 - 3
Ardealite
Hardness: 1 - 1.5
Ardennite-(as)
Hardness: 6 - 7
Ardennite-(v)
Argandite
Argentite
Hardness: 2.5
Argentobaumhauerite
Hardness: 3
Argentodufrénoysite
Argentojarosite
Hardness: 3.5 - 4.5
Argentoliveingite
Hardness: 4
Argentopearceite
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