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 4681-4740 of 5,084 specimens
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Turtmannite
Tuscanite
Hardness: 5.5 - 6
Tusionite
Hardness: 5 - 6
Tuzlaite
Hardness: 2 - 3
Tvalchrelidzeite
Hardness: 3
Tvedalite
Hardness: 4.5
Tveitite-(y)
Tvrdýite
Hardness: 3 - 4
Tweddillite
Hardness: 6 - 7
Twinnite
Hardness: 3.5
Tychite
Hardness: 3.5
Tyretskite
Hardness: 5
Tyrolite
Hardness: 1.5 - 2
Tyrrellite
Hardness: 3.5
Tyuyamunite
Hardness: 1.5 - 2
Udinaite
Uklonskovite
Ulexite
Hardness: 2.5
Ulfanderssonite-(ce)
Hardness: 5 - 6
Ulrichite
Hardness: 3 - 3.5
Ultramarine
Umbozerite
Hardness: 5
Umbrianite
Hardness: 5
Umohoite
Hardness: 2
Ungavaite
Ungemachite
Hardness: 2.5
Uralborite
Hardness: 4
Uralolite
Hardness: 2.5
Uramarsite
Uramphite
Hardness: 2 - 3
Urancalcarite
Hardness: 2 - 3
Uranocirciteii
Uranoclite
Uranopilite
Uranosilite
Uranospathite
Hardness: 2 - 2.5
Uranosphaerite
Hardness: 2 - 3
Uranotungstite
Hardness: 2
Urea
Uricite
Hardness: 1 - 2
Uroxite
Hardness: 2
Urusovite
Hardness: 4
Urvantsevite
Hardness: 2
Usovite
Hardness: 3.5
Ussingite
Hardness: 6 - 7
Utahite
Hardness: 4 - 5
Uvanite
Uytenbogaardtite
Hardness: 2
Uzonite
Hardness: 1.5
Vaesite
Hardness: 4.5 - 5.5
Vajdakite
Valentinite
Hardness: 2.5 - 3
Valleriite
Hardness: 1 - 1.5
Valleyite
Vanackerite
Vanadio-oxy-chromium-dravite
Hardness: 7.5
Vanadio-oxy-dravite
Vanadio-pargasite
Hardness: 6
Vanadiocarpholite
Vanadium
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