Sulphur lump for sales NOT AVAILABLE NOW!
Pure Sulfur is bright yellow. The color may be altered if impurities are
present. Clay and selenium impurities, as well as volcanic
mixtures in sulfur can cause it to be slightly red, green, brown,
or gray. Sulfur often occurs in petroleum deposits, where it is found
coated with greasy black petroleum.
Sulfur crystallizes in the orthorhombic system, but an uncommon
monoclinic form of sulfur also exists. This monoclinic form is
scientifically
considered a different mineral than Sulfur, and is scientific name
is Rosickyite. Most dealers selling Rosickyite usually label the mineral
as
"Monoclinic Sulfur".