Dravite, Hematite
Bull Run Quarry, Conklin, Loudoun County, Virginia, USA
Hallucigenia of Manassas. Black Dravite crystals at the contact between hornfel and diabase with micro hematite crystals (shown in daughter photo). The Occurrence of Dravite was reported in Loud, G.A., Tucker, T.E., Weingart, R.L., and Francis, C.A. (2023) The Trap Rock Quarries of Northern Virginia and Their Minerals. Rocks & Minerals: (98)2: ...