Tenacity
-
-
Solubility
-
insoluble
Durability
-
-
Specific Gravity
3.80-4.152.36
1
7.18
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Fracture
Uneven
Uneven, Subconchoidal, Fibrous
Cleavage
perfect along [010] and [100]
[110] perfect, [101] good, [010] distinct
Mohs Hardness
3.5-43.5-4
2
10
👆🏻
Chemical Composition
Cu 5(SiO 3) 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Al 3(PO 4) 2(OH,F) 3 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references