Plumbotsumite, (w. Alamosite)


Composition: Pb5Si4O8(OH)10
Crystal System : Orthorhombic
Hardness : 2
Year of Discovery: 1979
IMA Number: 1979-049
IMA Status: Approved
Discovered By: Wolfgang Bartelke (German collector)
Named for: Composition/locality


  • Supergene
  • 2nd Oxidation Zone

Notable Finds

A number of specimens from the major alamosite discovery of the mid-1970s, included plumbotsumite as an accessory mineral.