ppb and ppm

HIGH-GRADE NI-CU-PT-PD-ZN-CR-AU-V-TI DISCOVERIES IN THE "RING OF FIRE"

NI 43-101 Update (September 2012): 11.1 Mt @ 1.68% Ni, 0.87% Cu, 0.89 gpt Pt and 3.09 gpt Pd and 0.18 gpt Au (Proven & Probable Reserves) / 8.9 Mt @ 1.10% Ni, 1.14% Cu, 1.16 gpt Pt and 3.49 gpt Pd and 0.30 gpt Au (Inferred Resource)

Reply New Message

Prev Message Back To Forum Threaded View Next Message

Been There

Rank: President [?]

Points: 21119 [?]

Votes: 359 Score: 4.1 [?]

Your Vote:

Please Log In to Vote

Did you know? You can earn activity points by filling your profile with information about yourself (what city you live in, your favorite team, blogs etc.)

ppb and ppm

posted on Apr 08, 2008 11:42AM

We have seen several articles today stating Platinum Group Metals (PGMs) in ppb. Ppb stands for parts per billion and ppm stands for parts per million. Labs conduct their analysis/assays of the samples with machines that are set to report results as ppb or ppm depending on the concentrations involved. The results are them reported as g/t, % or oz/t depending on the preference of the company that is paying for the assays.

As a quick reference 1000 ppb equals 1 g/t and 10,000 ppm equals 1%. So when you see 700 to 900 ppb they are indicating assays of 0.7 to 0.9 g/t.