Alstonite as skalenoedric crystals - 
Fallow Field Mine near Acomb, Alston Moor, Northumberland (formerly: Cumberland), Great Britain
 
Drusy gangue portion with numerous milk-white Alstonite scalenohedrons (1-2 mm long). Nice historic specimen from the type locality, from the exchange fund of the Bergakademie Freiberg/Saxony, with an original label of custodian Edelmann dating from the period 1920-1952. Ex Stefan Weiß collection