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 961-1020 of 5,084 specimens
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Clinoenstatite
Hardness: 5 - 6
Clinoferrosilite
Hardness: 5 - 6
Clinohedrite
Hardness: 5.5
Clinohumite
Hardness: 6
Clinojimthompsonite
Hardness: 2 - 2.5
Clinokurchatovite
Clinometaborite
Clinophosinaite
Hardness: 4
Clinoptilolite
Clinoptilolite-ca
Hardness: 3.5 - 4
Clinoptilolite-k
Hardness: 3.5 - 4
Clinoptilolite-na
Hardness: 3.5 - 4
Clinosafflorite
Hardness: 4.5 - 5
Clinotobermorite
Hardness: 4.5
Clinoungemachite
Clintonite
Hardness: 3.5 - 6
Cloncurryite
Hardness: 2
Coalingite
Hardness: 1 - 2
Cobaltarthurite
Hardness: 3.5 - 4
Cobaltaustinite
Hardness: 4.5
Cobaltkieserite
Hardness: 2 - 3
Cobaltkoritnigite
Hardness: 2 - 3
Cobaltlotharmeyerite
Hardness: 4.5
Cobaltneustädtelite
Hardness: 4.5
Cobaltoblödite
Hardness: 2.5
Cobaltomenite
Hardness: 2 - 2.5
Cobaltpentlandite
Hardness: 4 - 4.5
Cobalttsumcorite
Hardness: 4.5
Cobaltzippeite
Hardness: 2
Coccinite
Cochromite
Hardness: 7
Coconinoite
Coesite
Hardness: 7.5 - 8
Coffinite
Hardness: 5 - 6
Cohenite
Hardness: 5.5 - 6
Coiraite
Hardness: 2
Coldwellite
Colemanite
Hardness: 4.5
Colimaite
Colinowensite
Hardness: 4
Collinsite
Hardness: 3 - 3.5
Coloradoite
Hardness: 2.5
Colquiriite
Hardness: 4
Columbite (mineral group)
Hardness: 6
Columbite-(fe)
Hardness: 6
Columbite-(mg)
Hardness: 6.5
Columbite-(mn)
Hardness: 6
Colusite
Hardness: 3 - 4
Comancheite
Hardness: 2
Combeite
Comblainite
Hardness: 2
Compreignacite
Congolite
Hardness: 6.5 - 7.5
Connellite
Hardness: 3
Coombsite
Cooperite
Hardness: 4 - 5
Coparsite
Copiapite
Hardness: 2.5 - 3
Coquandite
Hardness: 3 - 4
Coralloite
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