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 3661-3720 of 5,084 specimens
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Potassic-mangani-leakeite
Hardness: 6 - 7
Potassic-pargasite
Hardness: 6 - 6.5
Potassic-richterite
Hardness: 5 - 6
Potassic-sadanagaite
Hardness: 5 - 6
Potassiccarpholite
Hardness: 5
Pottsite
Hardness: 3.5
Poubaite
Hardness: 2.5 - 3
Poudretteite
Hardness: 5
Poughite
Povondraite
Hardness: 7
Poyarkovite
Hardness: 2 - 2.5
Prachařite
Pradetite
Prehnite
Hardness: 6 - 6.5
Preisingerite
Hardness: 3 - 4
Preiswerkite
Hardness: 2.5
Preobrazhenskite
Hardness: 4.5 - 5
Pretulite
Hardness: 5
Prewittite
Příbramite
Hardness: 3 - 4
Priceite
Hardness: 3 - 3.5
Priderite
Hardness: 7
Princivalleite
Pringleite
Hardness: 3 - 4
Priscillagrewite-(y)
Prismatine
Hardness: 6.5 - 7
Probertite
Hardness: 3.5
Proshchenkoite-(y)
Hardness: 5.5
Prosopite
Hardness: 4.5
Prosperite
Hardness: 4.5
Protasite
Proto-anthophyllite
Hardness: 6
Proto-ferro-anthophyllite
Proto-ferro-suenoite
Hardness: 5.5 - 6
Protochabournéite
Protoenstatite
Proudite
Hardness: 2 - 2.5
Proxidecagonite
Przhevalskite
Hardness: 2 - 3
Pseudoboleite
Hardness: 2.5
Pseudobrookite
Hardness: 6
Pseudocotunnite
Pseudograndreefite
Hardness: 2.5
Pseudojohannite
Pseudolaueite
Hardness: 3
Pseudolyonsite
Pseudomalachite
Hardness: 4 - 4.5
Pseudomarkeyite
Pseudomeisserite-(nh4)
Pseudorutile
Hardness: 3.5
Pseudosinhalite
Pseudowollastonite
Pucherite
Hardness: 4
Pumpellyite
Pumpellyite-(al)
Pumpellyite-(mg)
Hardness: 5.5
Puninite
Punkaruaivite
Hardness: 4.5
Pushcharovskite
Putnisite
Hardness: 1 - 2
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