Project Number: 77

Deposit Number: 63

Location: St. Louis, Missouri, America

Resource (*10^4 t, REO, Total): 7.2

Grade (wt. %): 12

La2O3: 25.38

Ce2O3: 44.86

Pr6O11: 3.98

Nd2O3: 13.16

Sm2O3: 2.73

Eu2O3: 0.22

Gd2O3: 1.12

Dy2O3: 1.25

Ho2O3: 0.19

Er2O3: 0.6

Yb2O3: 0.92

Lu2O3: 0.12

Y2O3: 5.48

HREE Percentage: 9.68

REE Pattern Reference: Long et al., 2010, The Principal Rare Earth Elements Deposits of the United States: A Summary of Domestic Deposits and a Global Perspective

Deposit Type Reference: Mercer, C. N., Watts, K. E., & Gross, J. (2020). Apatite trace element geochemistry and cathodoluminescent textures—A comparison between regional magmatism and the Pea Ridge IOAREE and Boss IOCG deposits, southeastern Missouri iron metallogenic province, USA. Ore Geology Reviews, 116, 103129.

Resource and Grade Reference: The Principal Rare Earth Elements Deposits of the United States—A Summary of Domestic Deposits and a Global Perspective