Sulfur and Herderite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
insoluble
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
Not Available
  
2.90-3.02
  
Fracture
(e.g. graphite).
  
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
  
Cleavage
{???} Imperfect, {???} Imperfect
  
Indistinct on {110}
  
Mohs Hardness
Not Available
  
5-5.5
  
Chemical Composition
Not Available
  
CaBePO 4(F,OH)Ulrich Henn and Claudio C.
  
Sulfur and Herderite Chemical Formula
While comparing Sulfur and Herderite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Sulfur and Herderite chemical formula.
>- Chemical formula of Herderite- CaBePO 4(F,OH)Ulrich Henn and Claudio C.
Sulfur and Herderite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sulfur and Herderite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sulfur and Herderite Optical Properties during the identification of gemstone. Specific gravity of Sulfur is 2.90-3.02 whereas that of Herderite is 2.90-3.02.