Hydrocerussite

Formula : Pb3(CO3)2(OH)2

Family: 
Carbonates
Space group: 
Trigonal - Ditrigonal Pyramidal HM symbol (3m) Space Group: P 31m
Dana class: 
16a.2.2.1V - 16a Carbonates - Hydroxyl or Halogen ; 16a.2 Carbonates - Hydroxyl or Halogen where (A B)3 (XO3)2 Zq ; 16a.1.10

Dernière mise à jour le 25.01.2021

THERMODYNAMICS

Individual properties (298.15 K)
M
g·mol-1
 V°
cm3·mol-1
 ΔGºf
J·mol-1
 ΔHºf
J·mol-1
 Sº
J·mol-1·k-1
 CP
J·mol-1·K-1
775.632 113.390 (Ref.: 63wyc) Wyckoff, R.W.G., 1963, Crystal Structures, Second edition, tome 4, Interscience Publishers, New York, p. 320-322. -1705000 (Ref.: 84tay/lop) Taylor P., and Lopata V.J., 1984. Stability and solubility relationships between some solids in the system PbO CO2 H2O. Can. J. Chem., 62, p. 395 402. -1914200 (Ref.: 83san/bar) Sangameshwar S.R., and Barnes H.L., 1983. Supergene processes in zinc lead silver sulfide ores in carbonates, Econ. Geol., 78, p 1379 1397. 455.508 (Ref.: Internal calculation)
CP(T) = a + b·T + ·c·T-2 (T in Kelvin)
a
J·mol-1·K-1
 b * 103
J·mol-1·K-2
 c * 10-5
J·K·mol-1
 Maier Kelley Ref.
Reaction properties

Hydrocerussite + 4H+ ⇌ 2HCO3- + 3Pb+2 + 2H2O

298.15 K, 1 bar log10K: 2.75 ΔH°r:-34559 J·mol-1 (Ref.: 83san/bar) Sangameshwar S.R., and Barnes H.L., 1983. Supergene processes in zinc lead silver sulfide ores in carbonates, Econ. Geol., 78, p 1379 1397.
T(°C) 0 25 60 100 150 200 250 300
log10K 3.28 2.75 2.11 1.52 0.90 0.30 -0.42 -1.50
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
-2137.955856 -0.321813 118102.564358 774.070544 -6653772.310801