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 3721-3780 of 5,084 specimens
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Putoranite
Hardness: 4.5
Puttapaite
Putzite
Hardness: 3 - 3.5
Pyatenkoite-(y)
Hardness: 4 - 5
Pyracmonite
Pyradoketosite
Pyroaurite
Hardness: 2.5
Pyrobelonite
Hardness: 3.5
Pyrochlore (mineral group)
Pyrochroite
Hardness: 2.5 - 3
Pyrophanite
Hardness: 5 - 6
Pyrophyllite
Hardness: 1 - 2
Pyrosmalite-(fe)
Hardness: 4.5
Pyrosmalite-(mn)
Hardness: 4.5
Pyrostilpnite
Hardness: 2
Pyroxene
Pyroxferroite
Hardness: 4.5 - 5.5
Pyroxmangite
Hardness: 5.5 - 6
Qandilite
Hardness: 7
Qaqarssukite-(ce)
Hardness: 3 - 4
Qatranaite
Hardness: 3.5
Qilianshanite
Hardness: 2
Qingheiite
Hardness: 5.5
Qingsongite
Hardness: 9 - 10
Qitianlingite
Hardness: 5.5
Quadratite
Hardness: 3
Quadridavyne
Hardness: 5
Quadruphite
Quartz
Hardness: 7
Queitite
Hardness: 4
Quenselite
Hardness: 2.5
Quenstedtite
Hardness: 2.5
Quetzalcoatlite
Hardness: 3
Quijarroite
Quintinite
Hardness: 2
Qusongite
Raadeite
Rabbittite
Hardness: 2.5
Rabejacite
Hardness: 3
Raberite
Hardness: 2.5 - 3
Radekškodaite-(ce)
Radekškodaite-(la)
Radhakrishnaite
Radovanite
Radtkeite
Hardness: 2 - 3
Raguinite
Raisaite
Hardness: 2
Raite
Hardness: 3
Rajite
Hardness: 4
Rakovanite
Hardness: 1
Ralphcannonite
Ramaccioniite
Ramanite-(cs)
Ramanite-(rb)
Ramazzoite
Hardness: 2.5
Rambergite
Hardness: 4
Ramdohrite
Hardness: 2
Rameauite
Ramikite-(y)
Hardness: 3
Rammelsbergite
Hardness: 5.5 - 6
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