Witherite

Refractive Index : 1.677 – 1.529

Optical Characteristic : DR, biaxial negative

Specific Gravity : 4.79 – 4.27

Formula : BaCO3

Crystal System : Orthorhombic

Variety/Species : Witherite

Species/Group : Aragonite Group

Birefringence : 0.148

Dispersion : N/A

Hardness : 3 to 3.5

Toughness : Poor

Ultrasonic : Never

Steam : Never

UV Long : Inert

UV Short : Inert

Pleochroism : None

Strength : N/A

Pleochroism Colors : None

Heat : Sensitive

Acids : Sensitive

Light : Stable

Polish Luster : Vitreous

Fracture : Conchoidal

Fracture Luster :

Clarity Type : N/A

Tones : N/A

Saturations : N/A

Cause of Color :

Enhancements : None

Cleavage : Distinct 1 direction

Color Range : Colorless, white, grayish white(pale), brownish white (pale), yellowish, whitish, grayish, brownish

Transparency : Semitransparent to translucent

Phenomena : None

Separations : Witherite from-

Identifying Characteristics and information
Extremely rare as facteted stones

Spectral Data
Not diagnostic

Trade Names and Misnomers
Witherite

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