Joel Clark Collection


 
QUARTZ (Var: Chalcedony) pseudomorph after ARAGONITE with numerous perched CALCITE crystals
Cadman High Rock Quarry
 
Smoky QUARTZ with ARFVEDSONITE inclusions on MICROCLINE matrix
Golden Horn Batholith
 
Reichenstein-Grieserntal twin QUARTZ cluster
Green Ridge Breccia