Gartrellite

Gartrellite


Composition: Pb(CuFe3+Zn)(AsO4,SO4)2.(H2O,OH)2
Crystal System : Triclinic
Colours: Yellow, greenish-yellow
Lustre : Chalky
Hardness (H) : 4.5
Specific Gravity (S.G) : 5.38-5.43
References: Gebhard (1999)

Distribution

Rare. Present in all three oxidation zones, but requires analysis for certain identification.

Occurrence

  • Supergene
  • 1st Oxidation Zone
  • 2nd Oxidation Zone
  • 3rd Oxidation Zone

Notable Finds

Prior to the description of gartrellite (from Broken Hill, Australia) in 1988, this mineral was referred to as "Mineral TK" at Tsumeb.

Paragenetic and General Notes

Readily confused with zincgartrellite, tsumcorite, ferrilotharmeyerite and beaverite. Many of the specimens that were labelled as "Mineral TK" in the 1970s and 1980s have turned out to be gartrellite.