Project Number: 76

Deposit Number: 62

Location: Elk Creek, Nebraska, America

Resource (*10^4 t, REO, Total): 104

Grade (wt. %): 0.3504

La2O3: 23.0539815090963

Ce2O3: 39.8150909633164

Pr6O11: 4.26483745899195

Nd2O3: 15.6277960035789

Sm2O3: 3.84730092454518

Eu2O3: 1.37190575603937

Gd2O3: 3.28064419922458

Tb4O7: 0.357888458097226

Dy2O3: 1.43155383238891

Ho2O3: 0.208768267223382

Er2O3: 0.447360572621533

Tm2O3: 0.0596480763495377

Yb2O3: 0.298240381747689

Lu2O3: 0.0298240381747689

Y2O3: 5.934983596779

HREE Percentage: 12.0489114226066

REE Pattern Reference: https://secureservercdn.net/198.71.233.156/gx0.d43.myftpupload.com/wp-content/uploads/NioCorp_Presentation_June-2022.pdf

Project and Status Reference: https://www.niocorp.com/niocorp-scores-initial-success-in-metallurgical-testing-of-elk-creek-ore-samples-to-optimize-process-and-demonstrate-potential-extraction-of-rare-earth-elements/

Resource and Grade Reference: https://secureservercdn.net/198.71.233.156/gx0.d43.myftpupload.com/wp-content/uploads/NioCorp_Presentation_June-2022.pdf