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 2041-2100 of 5,084 specimens
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Jasmundite
Hardness: 5
Jasonsmithite
Jasrouxite
Jaszczakite
Javorieite
Jeanbandyite
Hardness: 3.5
Jeankempite
Hardness: 1.5
Jedwabite
Hardness: 7
Jeffbenite
Hardness: 7
Jeffreyite
Hardness: 5
Jennite
Hardness: 3.5
Jensenite
Hardness: 3 - 4
Jentschite
Hardness: 2 - 2.5
Jeppeite
Hardness: 5 - 6
Jeremejevite
Hardness: 7
Jerrygibbsite
Hardness: 5.5
Jervisite
Hardness: 6
Ježekite
Hardness: 2
Jianshuiite
Hardness: 1.5 - 2
Jimboite
Hardness: 5.5
Jimthompsonite
Hardness: 6 - 7
Jingsuiite
Jinshajiangite
Hardness: 4.5 - 5
Joanneumite
Hardness: 1
Joaquinite-(ce)
Hardness: 5 - 5.5
Joegoldsteinite
Joëlbruggerite
Hardness: 3
Joesmithite
Hardness: 5.5
Johachidolite
Hardness: 7.5
Johanngeorgenstadtite
Johannite
Hardness: 2 - 2.5
Johannsenite
Hardness: 6
Johillerite
Hardness: 3
Johnbaumite
Hardness: 4.5
Johninnesite
Hardness: 5 - 6
Johnkoivulaite
Hardness: 7.5
Johnsenite-(ce)
Hardness: 5 - 6
Johnsomervilleite
Hardness: 4.5
Johntomaite
Hardness: 4.5
Johnwalkite
Hardness: 4
Jôkokuite
Hardness: 2.5
Joliotite
Hardness: 1 - 2
Jolliffeite
Hardness: 6 - 6.5
Jonassonite
Hardness: 2.5 - 3
Jonesite
Hardness: 3 - 4
Joosteite
Hardness: 4
Jordanite
Hardness: 3
Jordisite
Hardness: 1 - 2
Jørgensenite
Hardness: 3.5 - 4
Jörgkellerite
Hardness: 3
Joséite-a
Joséite-b
Hardness: 2
Joteite
Hardness: 2 - 3
Jouravskite
Hardness: 2.5
Juabite
Hardness: 3 - 4
Juangodoyite
Juanitaite
Hardness: 1
Juanite
Juansilvaite
Hardness: 2.5
Julgoldite
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