“Pale yellow dendrititc crystals of Sulfur on hornsfel matrix from Kehleys Run Mine, Shenandoah, Schuylkill Co., Pennsylvania. Deposition caused by the burning Anthracite coal within the mine (non-native). area of view aproximately 8 x 6mm. From the PA Annex of my personal collection, acquired in 2003.”
Mark Heintzelman - 30th November 2000