RL-1 Uranium Ore

Click to print PDF version of certificate

RL-1 is a sample of ore from the Rabbit Lake deposit of Eldor Mines, Saskatchewan. The host rock is a siliceous dolomite that has been highly altered and fractured. The orebody consists of a high-grade uranium mineralization in the centre of a brecciated zone, varying to low grade in the lesser brecciated perimeter. RL-1 was intended as a higher uranium-bearing complement to uranium tailings sample UTS-4, previously prepared from a sample of the same orebody.

Thirteen laboratories participated in the interlaboratory program to provide analytical results for one or more of uranium, nickel, and arsenic.

Certified Values and 95% Confidence Intervals
Constituent wt %
U 0.201 ± 0.005
Ni 185.0 ± 5.0 µg/g
As 19.6 ± 1.1 µg/g

A certificate of analysis will be issued for each order of RL-1. A copy of CANMET Report 85-4E, "RL-1: A certified uranium reference ore", will be forwarded, free of charge, on request to the Coordinator, CCRMP.

Approximate Chemical Composition
Constituent Mass %
Si 25.3
Mg 9.2
Al 6.5
Fe 2.3
Ca 1.8
C (total) 0.8
Ti 0.25
K 0.22
U 0.20
S 0.13
Na 0.06
Ni 185 µg/g
As 20 µg/g
H2O (105°C) 0.9
Loss on ignition 10.2

CCRMP, CANMET Mining and Mineral Sciences Laboratories
555 Booth Street, Ottawa
Ontario, Canada
K1A 0G1

Telephone: (613) 995-4738
Facsimile: (613) 943-0573
E-mail