Creedite

Sample of orange Creedite that occurs as blade-like prismatic subhedral crystals with a vitreous lustre. Creedite (Ca3Al2SO4(F,OH)10 x 2H2O) can be colourless, white, violet or orange in colour. Lustre is vitreous and streak is white. Hardness is 3 1/2 to 4. Creedite usually occurs as blade-like prismatic crystals or can be radial. https://en.wikipedia.org/wiki/Creedite https://www.mindat.org/min-1151.html Brecciate vein of Fluorite, with Fluorite being the main commodity from the mine with Creedite occurring in veins of breccia voids that are filled with clay. https://www.mindat.org/loc-5541.html