Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above
Qurashi M M , Barnes W H , American Mineralogist , 37 (1952) p.423-426, A preliminary structure for pucherite, BiVO4
View Additional jPOWD Structure files for Pucherite
[1]
[2]
Physical Properties of Pucherite
Cleavage:
{001} Perfect
Color:
Yellow brown, Dark brown red, Pink brown, Reddish brown.
Pulverulent - Forms a loose, poorly-coherent powdery mass.
Habit:
Tabular - Form dimensions are thin in one direction.
Hardness:
4 - Fluorite
Luminescence:
Non-fluorescent.
Luster:
Vitreous - Adamantine
Magnetism:
Nonmagnetic
Streak:
yellow
Optical Properties of Pucherite
Gladstone-Dale:
CI meas= -0.147 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= -0.088 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2236,KPDmeas= 0.2357,KC= 0.2055 Ncalc = 2.28 - 2.35
Optical Data:
Biaxial (-), a=2.41, b=2.5, g=2.51, bire=0.1000, 2V(Calc)=34, 2V(Meas)=19. Dispersion marked to extreme, r < v.
Pleochroism (x):
yellow brown.
Pleochroism (y):
yellow brown.
Pleochroism (z):
yellow brown.
Calculated Properties of Pucherite
Electron Density:
Bulk Density (Electron Density)=5.62 gm/cc note: Specific Gravity of Pucherite =6.59 gm/cc.
Fermion Index:
Fermion Index = 0.0004886448 Boson Index = 0.9995113552
Photoelectric:
PEPucherite =1,221.91 barns/electron U=PEPucherite x rElectron Density=6,861.17 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Pucherite is Not Radioactive