General Information:
Chemical Formula:Pb(Cu,Fe++)2(AsO4,SO4)2(CO3,H2O)0.7
Composition:(Molecular Weight = 524.46 gm)Iron 5.32 %
FeCopper 18.17 %
CuArsenic 21.43 %
AsHydrogen 0.08 %
H Lead 39.51 %
PbCarbon 1.15 %
C Sulfur 3.06 %
S Oxygen 11.29 %
O Empirical Formula: PbCu1.5Fe2+0.5(As)1.5(SO4)0.5(CO3)0.5(H2O)0.2
IMA Status:Approved IMA
Locality:Ashburton Downs, Western Australia.
Name Origin:Named for Blair Gartrell (1950-1995), Australian collector who found the mineral.
Physical Properties: Color:greenish yellow or yellow.
Diaphaniety:Transparent
Habits:Encrustations - Forms crust-like aggregates on matrix., ,
Hardness:1-2 - Between Talc and Gypsum
Luster:Earthy (Dull)
Streak:yellow
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