Analyses by SEM-EDS at the University of New Orleans Lab, New Orleans, USA (Jim Nazimoff & Al Falster).
Habit:
A wide range of crystals have been noted, from sharp blocky to short and long prismatic, all with a rhombic cross section. Rounded, equant, crystals have also been noted, exhibiting complex morphologies.
Colour:
Colorless and glassy, sometimes turbid to milky-white.
Mascot Mine, Gorham, Coos County, New Hampshire, USA