VANCOUVER, BRITISH COLUMBIA--(Marketwired - Dec 14, 2015) - CKR Carbon Corporation ("CKR" or the "Company") (TSX VENTURE:CKR)(FRANKFURT:CB8) is pleased to announce the results of assays and test work on samples of vein material with varying amounts of country rock from the recent bulk sampling program at the Aukam project in Southern Namibia. The samples were sent to Lilof Enterprises ("Lilof"), (formerly Gecko Laboratories) of Swakopmund, Namibia for the assays and test work.
Assay Results
Results of assays from 84 unscreened samples ranging in weight from 3.12kg to 10.75kg show a range of 11.39% Cg (carbon as graphite) to 72.14% Cg with an average of 27.66% Cg. In addition, 21 of the 84 samples (25%) assayed more than 30% Cg.
Flake Size Distribution
Prior to flotation testing, flake size distributions were determined on three composite samples. The distribution is consistent between the three samples showing primarily medium to large flake (35.0 to 38.4%) and fine flake (39.7 to 42.0%) sizes. Results are given in the table below.
| Description | Particle Size | Test 1 | Cumulative | Test 2 | Cumulative | Test 3 | Cumulative | |||||
| (um) | % | % | % | % | % | % | ||||||
| Large-Medium | +212 | 22.4 | 22.4 | 21.8 | 21.8 | 23.2 | 23.2 | |||||
| +150 | 16.0 | 38.4 | 14.6 | 36.4 | 11.8 | 35 | ||||||
| Small | +105 | 9.9 | 48.3 | 8.0 | 44.4 | 10.4 | 45.4 | |||||
| +75 | 12.0 | 60.3 | 13.6 | 58.0 | 12.7 | 58.1 | ||||||
| Fine | +45 | 15.1 | 75.4 | 16.0 | 74.0 | 14.6 | 72.7 | |||||
| -45 | 24.6 | 100 | 26.0 | 100 | 27.3 | 100 | ||||||
| TOTAL | 100 | 100 | 100 |
Flotation results
A 129kg sample of the Aukam material with a head grade of 29.65% Cg was upgraded by flotation and acid wash to a grade of 96.13% Cg. The concentrate was also low in sulphur, showing an average of 0.08% S. The rougher concentrate averaged 80.59% Cg and the cleaner concentrate averaged 89.58% Cg. Significant graphite reported to the rougher and cleaner tails which assayed 6.2% Cg and 8.95% Cg, respectively, indicating potential to further optimize the process.
The test samples were taken as part of a 25 tonne bulk sampling program at the Aukam project and were chosen to ensure they are representative of the material (See news release dated 8 October, 2015). All carbon analyses were performed by thermo-gravimetric assay at Lilof Enterprises Laboratory in Swakopmund. Check assays were performed on 17 samples for carbon and sulphur by an external laboratory (Bureau Veritas).The results of the check assays compared favourably to that obtained by Lilof Enterprises, with an average of 26.51% Cg for the Lilof assays compared to 26.91% Cg for Bureau Veritas.