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DELTA: Geochem mode. Analysis results of mining activities

DELTA: Geochem mode. Analysis results of mining activities. Sonia GÜiza González sonia.guiza@olympusndt.com Geochemistry – International Mining Group (IMG) Olympus Innov -X. Content. Mineral processing samples for Exploitation mining. 2. Soil samples for Exploration mining.

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DELTA: Geochem mode. Analysis results of mining activities

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  1. DELTA: Geochem mode.Analysis results of mining activities Sonia GÜizaGonzález sonia.guiza@olympusndt.com Geochemistry – International Mining Group (IMG) Olympus Innov-X

  2. Content • Mineral processing samples for Exploitation mining. • 2. Soil samples for Exploration mining. • 3. Standard Rocks for Petrographic identification. • Conclusions

  3. 1. Mineral processing samples CASE DESCRIPTION: Samples sulfurs concentrates of Cormin Laboratory in Peru. Results for: As, Pb, Zn, Cu, Ag. RESULTS: Laboratory –without information analytical methodology (perhaps AA) and Niton results. ABREVIATORS: Lab = laboratory results D = Delta; geoch = mode geochem; min = mode miner N = Niton

  4. Summary fit parameter (R2)

  5. Comparison results Zinc Lead

  6. Cont. Cupper Arsenic

  7. Silver Analysis

  8. 2. Auger soil sampling The presence of a veneer of post-mineralization over-burden and a well developed organic soil horizon posed a problem for surface soil sampling. Hence, auger drill-ing (up to 4 to 5 meters depth) was proposed as an effective method to collect a representative sample from the B-soil horizon sampling target.

  9. Description results Count samples: 45 • PULP SAMPLE: Sample with preparation requirements (drying, crushing, splitting, pulverizing to 75 micron – 200 mesh). Chemistry Analysis: ALS-Chemix; ICP-AES; aqua regia digestion. ABREVIATORS: Lab = laboratory results, D = Delta; gch = mode; s = soil, N = Niton; HH_PA = Handheld Portable Analyzer; N = number values or results >LOD.

  10. Comparison type elements Exclusive elements results by laboratory analysis that was ICP-AES were Ba, Be, Ce, Ga, Ge, Hf, In, La, Li, Na, Re, Sc, Tl HH_PA = Handheld Portable Analyzer; D=Delta and N=Niton.

  11. Summary fit parameter (R2)

  12. Bold is laboratory result with unit of concentration. Statistical Analysis Bold is lab result; D=Delta; gch=geochem; s=soil.

  13. Excellent correlation HH_AP&Lab Iron Manganese

  14. The best is Delta Lead (N was <LOD) Zinc (N got 33 results, D got 45)

  15. Geochem is not the best Calcium, D_gch got 13 results only Cupper, D_gch got 26 results only

  16. N is the best Potassium Vanadium

  17. Logarithmic Scale Niobium Arsenic

  18. Other examples Nickel depend to LOD, better Delta Ytrium result the best of Delta (Niton haven’t this element)

  19. 4. Standard rocks of USSG

  20. Comparison major elements as oxides

  21. Correlation coefficient diagram

  22. Comparison for element D=Delta geochem mode

  23. Comparison every samples Standard Delta_geochem Delta_geochem Standard

  24. Lab = Standard result; D=Delta Ds=mode soil and Dgch=geochem Trace elements

  25. Conclusions 1. Geochem mode for exploitation mining is recommendable if there are elements of low concentration and custom need some light elements. 2. Soil mode for exploration mining is more recommendable that geochem mode because, samples as soil or sediment has a low concentration of elements. 3. Geochem mode is recommendable for lithological studies, which are important comparison of rocks and geochemistry orientation survey.

  26. Other conclusions Geochem mode should replace Mining Plus Mode, but NOT mining. This mode has one beam so the time of analysis is quickly as possible. Mining mode is an excellent option for fast diagnostic, for example As and Pb on gold samples. Geochem LOD has some differences than Soil mode. It is necessary to know what elements and what is the difference of LOD. Geochem mode have NOT replaced the soil mode yet. Geochem Mode is necessary to review some elements add if it is more useful in mining activities as tellurium by gold exploration or remove some elements. Other case is Neobium has a good result on logarithmic scale.

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