General Information:
Chemical Formula:Hg+6Hg++[Cl,(OH)]2O3
Composition:(Molecular Weight = 1,513.81 gm)Mercury 92.75 %
HgHydrogen 0.03 %
H Chlorine 3.51 %
ClOxygen 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
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