Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Hardness:
4.5 - Between Fluorite and Apatite
Luster:
Vitreous (Glassy)
Streak:
light green
Optical Properties of Pyrosmalite-(Fe)
Gladstone-Dale:
CI meas= 0.011 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.034 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2063,KPDmeas= 0.2112,KC= 0.2135 Ncalc = 1.65 - 1.68
Optical Data:
Uniaxial (-), e=1.64, w=1.68, bire=0.0400.
Calculated Properties of Pyrosmalite-(Fe)
Electron Density:
Bulk Density (Electron Density)=3.05 gm/cc note: Specific Gravity of Pyrosmalite-(Fe) =3.13 gm/cc.
Fermion Index:
Fermion Index = 0.01 Boson Index = 0.99
Photoelectric:
PEPyrosmalite-(Fe) = 13.18 barns/electron U=PEPyrosmalite-(Fe) x rElectron Density= 40.26 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Pyrosmalite-(Fe) is Not Radioactive
Pyrosmalite-(Fe) Classification
Dana Class:
72.04.01a.01(72)Phyllosilicate Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings