Detailed information
Species
Witherite, Alstonite, Calcite
Dimensions
58 x 37 x 33
mm
Locality
Fallowfield Mine, Acomb Northumberland England
Condition
No recorded repairs
An excellent, double terminated white Witherite crystal measuring to 3.3 cm on Alstonite from the Fallowfield mine at Acomb in Northumberland, England. This characteristic pyramidal translucent crystal shows a central area of oscillatory growth between the positive and negative pyramidal faces. A micro-crystals of white Alstonite support the Witherite crystal on a compact granular Calcite matrix with spots of Galena and Sphalerite. A splendid example of Witherite from Fallowfield mine, which began operations in 1611, eventually closing in 1911 and is type locality for Alstonite.