Detailed information
Species
Hydroxyapophyllite-(K) , Prehnite
Dimensions
58 x 72 x 42
mm
Locality
Bull Run Quarry Conklin, Loudoun Co. Virginia, USA
Condition
No recorded repairs
The interestingly named Bull Run quarry is near to Conklin in Loudoun County, Virginia, about 170 km southwest of Washington. It is known for its excellent Hydroxyapophyllite-(K) crystals and has a total of thirty five valid species attributed to the operation. This fine crystal displays parts of four faces of a cube with a naturally cleaved based which has been overgrown by later stage mineralization. A smaller, 2.4 x 2.0 x 1.4 cm, Hydroxyapophyllite-(K) crystal emerges from one side. These crystals have opaque cores and translucent faces and display a most attractive bright pearly lustre. Minor botryoidal white balls of Prehnite form drusy coating around the lower edges.
