General Information:
Chemical Formula:
Hg+6Hg++[Cl,(OH)]2O3
Composition:
(Molecular Weight = 1,513.81 gm)
Mercury 92.75 % Hg
Hydrogen 0.03 % H
Chlorine 3.51 % Cl
Oxygen 3.70 % O
Empirical Formula:
Hg6HgCl1.5(OH)0.5O3
Environment:
On a fracture surface in a brecciated silica-carbonate rock composed mainly of ferroan magnesite and quartz.
IMA Status:
Approved IMA
Locality:
Clear Creek claim, New Idria district, San Benito County, California, USA.
Name Origin:
For Dr. J. Donald Hanawalt (1903-1987), a pioneer in the field of X-ray powder diffraction.
Physical Properties:
Cleavage:
[001] Good
Color:
black, dark brown black, or dark red brown.
Density:
9.52
Diaphaniety:
Opaque to translucent
Habits:
Anhedral Grains - Granular minerals without the expression of crystal shapes, ,
Hardness:
4 - Fluorite
Luminescence:
Non-fluorescent.
Luster:
Metallic
Streak:
dark reddish black
More details...