input: [0] Colorless to White or Greyish-white, may be tinted other colors [1] 3 to 3½ [3] WITHERITE (Aragonite Group): BaCO3 [4] Orthorhombic, pseudo- hexagonal [5] usually as stout prismatic twinned crystals with a hexagonal cross section, often with pyramidal terminations on both ends, more rarely as globular to botryoidal clusters, coarse fibrous aggregates, and granular [6] 4.29 [7] often hazed, will effervesce in cold acid. Has cleavage, but it may not be seen. [2] 
output: vitreous to sub-vitreous