Fig. 12. Predominance diagrams showing the relative stability of Pb-bearing minerals as a functions of pH, H₂PO^–₄ activity, and CO₂(g) partial pressure at 35°C and 1 atm (0.1 MPa) total pressure (other conditions specific to the generation of the diagrams are discussed in the text). (a) Including chloropyromorphite and (b) excluding chloropyromorphite. ALA, alamosite; CER, cerussite; CPM, chloropyromorphite; DCDP, brushite; HCER, hydrocerussite; HAP, hydroxyapatite; HPM, hydroxypyromorphite; and PGM, plumbogummite.