General Information:
Chemical Formula:
Hg5-xAg4+xS5-x(Cl,I,Br)4+x
Composition:
(Molecular Weight = 1,768.03 gm)
Silver 27.45 % Ag
Mercury 51.05 % Hg
Sulfur 8.16 % S
Iodine 7.54 % I
Bromine 1.58 % Br
Chlorine 4.21 % Cl
Empirical Formula:
Hg4.5Ag4.5S4.5Cl2.1I1.05Br0.35
IMA Status:
Approved IMA
Name Origin:
Named after Pierre Perroud.
Physical Properties:
Cleavage:
[???] Perfect
Color:
light red.
Diaphaniety:
Transparent
Hardness:
2 - Gypsum
Luster:
Vitreous - Adamantine
Streak:
orange red
More details...