Fig. 2: X-ray diffraction patterns of the alkaline vent analogs formed in a pH gradient after 1 h, 5 h, 24 h, 48 h, 72 h and 10 days. | Nature Communications

Fig. 2: X-ray diffraction patterns of the alkaline vent analogs formed in a pH gradient after 1 h, 5 h, 24 h, 48 h, 72 h and 10 days.

From: Fe2+ disproportionation within iron-rich alkaline vent analogues reveals proto-bioenergetic systems

Fig. 2

The analyses were performed under anoxic conditions using Co Kα radiation (λ = 1.79026 Å). For each phase, peaks are labeled with carbonated green rust (PDF4 ID: 00-052-0163 / noted GR) chloride green rust (PDF4 ID: 00-040-0127 / noted Cl - GR), magnetite (PDF4 ID: 01-076-1849/ noted M), amakinite (COD ID: 00-900-9104 / noted A), halite (PDF4 ID: 00-005-0628 / noted H) and the most intense peak (1 1 0) of metallic iron α-Fe (PDF4 ID: 01-087-0722 / noted Fe). The shift of the green rust plane (0 0 3) is indicated by a black arrow. See the complete indexing Table S1 in Supplementary Information.

Back to article page