The deposit has produced an attractive suite of colorful, well-crystallized, hydrous sulfates including coquimbite, halotrichite, krausite, metavoltine
, potassium alum, quenstedtite, r^merite and voltaite.
Several blue and orange-colored sulfates have not been positively identified but probably include romerite, voltaite, metavoltine
Excellent voltaite, metavoltine
, melanterite, copiapite and halotrichite, have been found at outcrops of pyritic Chattanooga Shale in Kentucky and at roadcuts exposing pyritic coal beds in Kentucky, Tennessee, and Pennsylvania (e.g., Coskren, 1981).
occurs in 0.1-mm lemon-yellow flakey crystals associated with other sulfates including halotrichite, melanterite, roemerite and voltaire.