Cerussite

Formula : PbCO3

Family: 
Carbonates
Space group: 
Orthorhombic - Dipyramidal HM symbol (2/m 2/m 2/m) Space Group: Pmcn
Dana class: 
14.1.3.4V - 14 Anhydrous Carbonates ; 14.1 Anhydrous Carbonates with Simple Formula A+ CO3 ; 14.1.3 Aragonite Group (Orthorhombic: Pmcn)
High temperature: 
Stable at room temperature.
Geological context: 
Present as an alteration mineral of weathering profile above lead -bearing deposits.

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
267.209 40.590 (Ref.: 78hel/del) Helgeson, H.C., Delany, J.M, Nesbitt, H.W., and Bird, D.K., 1978. Summary and Critique of the Thermodynamic Properties of Rock Forming Minerals: Amer. J. Sci., 278A, 229 pp. -627996 (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. -701719 (Ref.: Internal calculation) 131.000 (Ref.: 60kel) Kelley, K.K., 1960, Contributions to the Data in Theoretical Metallurgy XIII: High Temperature Heat Content, Heat Capacities and Entropy Data for the Elements and Inorganic Compounds. U.S. Bureau of Mines Bulletin 584, 232 p. 87.52 (Ref.: 78hel/del) Helgeson, H.C., Delany, J.M, Nesbitt, H.W., and Bird, D.K., 1978. Summary and Critique of the Thermodynamic Properties of Rock Forming Minerals: Amer. J. Sci., 278A, 229 pp.
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.
51.84 119.66 0.00 (Ref.: 78hel/del) Helgeson, H.C., Delany, J.M, Nesbitt, H.W., and Bird, D.K., 1978. Summary and Critique of the Thermodynamic Properties of Rock Forming Minerals: Amer. J. Sci., 278A, 229 pp.
Reaction properties

Cerussite + H+ ⇌ HCO3- + Pb+2

298.15 K, 1 bar log10K: -2.96 ΔH°r:12709 J·mol-1 (Ref.: Internal calculation)
T(°C) 0 25 60 100 150 200 250 300
log10K -3.21 -2.96 -2.78 -2.70 -2.76 -2.96 -3.31 -3.88
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
-880.033922 -0.141863 47401.034642 320.296573 -2859659.794868