1
Q
Anhydrite
A
3-3.5
2
Q
Topaz
A
8
3
Q
Sulfur
A
1.5-2.5
4
Q
Stibnite
A
2-2.5
5
Q
Forsterite (Mg-rich Olivine)
A
6.5-7
6
Q
Fayalite (Fe-rich Olivine)
A
6.5-7
7
Q
Diaspore
A
6.5-7
7
Q
Goethite
A
5-5.5
8
Q
Barite
A
3-3.5
9
Q
Witherite
A
3.5-4
10
Q
Aragonite
A
3.5-4
Mineral Hardness
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Decks in class (7)
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