Minimum Commodity Grades for NORMIN Showings
For a Showing to be included in NORMIN, at least one commodity must have been detected in an amount above the minimum listed below, either in bedrock or (in the case of placers, for example) in the material which would constitute the ore if the deposit were minable. If a showing is defined for one commodity, another commodity may be listed as anomalous if it has been detected in an amount above or equal to a second assigned value, its 'As a By-Product' minimum.
Minimum Commodity Grades for NORMIN Showings
| Commodity |
Minimum Grade |
Min. Grade (alt. units) |
As a By-Product |
| Ag (Silver) |
20 g/t |
0.58 oz/T |
10 g/t |
| Antimony - see Sb |
- |
- |
- |
| Au (Gold) |
0.5 g/t |
0.015 oz/T |
0.5 g/t |
| Barium, Barium Minerals |
8 % BaSO4 or 5 % Ba |
- |
- |
| Be (Beryllium) |
0.2 % BeO |
- |
- |
| Bi (Bismuth) |
0.1 % |
1000 ppm |
- |
| Boron Minerals |
1 % B2O3 or 0.3 % B |
10 000 ppm B2O3 |
- |
| Boron Compounds in Brine |
0.2 % B2O3 |
2000 ppm |
- |
| Cd (Cadmium) |
- |
- |
0.1 % |
| Carving Stone |
present in some quantity |
- |
- |
| Co (Cobalt) |
0.05 to 0.10 % |
500 - 1000 ppm |
- |
| Coal |
present |
- |
- |
| Chromium |
2% Cr2O3 |
- |
- |
| Cu (Copper) |
0.2 % |
2000 ppm |
- |
| Diamond |
present |
- |
- |
| Fe (Iron) |
20 % in iron oxides |
- |
- |
| Li (Lithium) |
0.2 % LiO2 |
- |
- |
| Mineral Specimen |
present |
- |
- |
| Mo (Molybdenum) |
0.05 % |
500 ppm |
- |
| MoS2 (molybdenite) |
0.10 % |
- |
- |
| Nb (Niobium) |
0.1 % Nb or 0.16 % NbO2 |
1000 ppm Nb or 1640 ppm NbO2 |
- |
| Ni (Nickel) |
0.2 % |
2000 ppm |
- |
| Pb (Lead) |
0.4 % |
4000 ppm |
- |
| Pd (Palladium) |
0.3 g/t |
0.009 oz/T; 300 ppb |
0.1 g/t |
| PGE (Platinum Group Elements; includes Pt Pd Os Ir Rh Ru) |
0.5 g/t |
0.015 oz/T |
- |
| Pt (Platinum) |
0.5 g/t |
0.015 oz/T; 500 ppb |
0.2 g/t |
| REE (Rare Earth Elements) |
0.25% rare earth oxides |
0.2 % rare earth element |
- |
| Sb (Antimony) |
- |
- |
0.5 % |
| Sn (Tin) |
0.1 % |
1000 ppm |
- |
| Ta (Tantalum) |
0.002 % Ta or 0.003% Ta2O5 |
20 ppm Ta or 30 ppm Ta2O5 |
- |
| Ti (Titanium) |
10 % TiO2 |
- |
- |
| Th (Thorium) |
- |
- |
0.1 % ThO2 |
| U (Uranium) |
0.03% U3O8 |
0.6 lb/T or 300 ppmU3O8 |
- |
| Va (Vanadium) |
0.1 % Va |
1000 ppm |
- |
| W (Tungsten) |
0.1 % WO3 |
1000 ppm WO3 |
- |
| Zn (Zinc) |
0.3 % |
3000 ppm |
- |
