Minerals

Metal Ion

∆₄₇

RPFR(^13/12C)

RPFR(^14/12C)

RPFR(^18/16O)

Aragonite

Pure

0.657

1.2785

1.5832

1.1394

Mg²⁺

0.621

1.2713

1.5665

1.1341

Fe²⁺

0.627

1.2742

1.5732

1.1374

Zn²⁺

0.615

1.2694

1.5621

1.1327

Calcite

Pure

0.653

1.2761

1.5777

1.1355

Mg²⁺

0.621

1.2738

1.5724

1.1354

Fe²⁺

0.618

1.2739

1.5727

1.1376

Zn²⁺

0.631

1.2733

1.5712

1.1356

Dolomite: Ca²⁺ Layer

Pure

0.639

1.2743

1.5736

1.1349

Fe²⁺

0.629

1.2745

1.5739

1.1371

Zn²⁺

0.634

1.2744

1.5738

1.1368

Dolomite: Mg²⁺ Layer

Pure

0.608

1.2733

1.5713

1.1369

Fe²⁺

0.610

1.2756

1.5765

1.1406

Zn²⁺

0.613

1.2753

1.5759

1.1393

Dolomite: Mean

Pure

0.623

1.2738

1.5724

1.1359

Fe²⁺

0.619

1.2750

1.5752

1.1389

Zn²⁺

0.623

1.2749

1.5749

1.1380