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Formula FeS2
Molecular mass
admixture As, Sb, Co, Cu, Tl, Bi
IMA Status
Systematics according to IMA (Mills et al., 2009)
Class Sulfides
Group Marcasite
Physical properties
Color brass yellow
Dash color Greenish gray to black
Shine Metal
Transparency Opaque
Mohs hardness 6-6.5
fragility Fragile
Cleavage imperfect
kink Stepped, uneven
Density 4.8-4.9 g/cm³
Crystallographic properties
space group
Syngony Rhombic
Optical properties
optical type
Refractive index
Birefringence Missing
optical relief
Dispersion of optical axes Missing
Pleochroism Missing
Luminescence Missing

Strode Anna

Anna Strod – director of the jewelry online store Author and editor of the jewelry blog

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