Quartz Technical Specialist
1. Geological Identification & Material Assessment
- Technically sort post‑blast quartz based on crystalline structure, fracture pattern, and silicon purity classification.
- Conduct real‑time purity assessments through drill cuttings (rock powder) analysis to ensure zero cross‑contamination.
- Characterize quartz lenses and veins by interpreting strike, dip, mineral zoning, and structural deformation patterns to plan efficient, high‑yield extraction benches.
- Identify geological anomalies such as weathered zones, inclusion pockets, and iron‑bearing minerals that may affect purity and processing yield.
2. Drilling & Blasting Optimization
- Operate and tune high‑pressure DTH rigs, optimizing percussion frequency and rotation speed to suit Mohs 7.0 hardness and maintain crystal integrity.
- Design blast patterns, burden and spacing parameters, and powder factors to prevent internal micro‑fracturing of quartz crystals while achieving the required fragmentation.
- Recommend explosive selection and charge sequencing to minimize thermal and shock damage to quartz structure.
- Validate blast performance through post‑blast quality mapping and fragmentation analysis to continuously refine blast strategies.
3. Contamination Control & Quality Assurance
- Implement contamination prevention protocols during drilling, blasting, handling, storage, and sampling to protect high‑purity quartz from contact with steel, ferrous material, clay, or organics.
- Monitor equipment wear and tool material transfer that may reduce SiO₂ purity.
- Work closely with laboratory teams to correlate field assessments with XRF, ICP‑MS, XRD, magnetic susceptibility, or wet chemistry results.
- Develop and maintain grading and acceptance criteria for raw quartz supplied to downstream processing.
4. Production Planning & Operational Support
- Coordinate extraction sequencing and selective mining with quarry operations to maximize high‑grade quartz recovery.
- Provide technical input on bench design, slope control, haulage routes, pump placement, and resource optimization.
- Support selection, commissioning, and optimization of quartz handling and processing equipment (jaw crushers, magnetic separators, optical sorters, flotation circuits).
- Conduct material flow assessments to ensure quartz feed meets plant capacity and purity requirements.
5. Data Recording, Reporting & Continuous Improvement
- Maintain detailed purity mapping and geological database for resource tracking and planning.
- Analyze productivity, yield variance, and purity deviations; recommend improvements based on data trends.
- Prepare weekly and monthly technical reports covering extraction quality, purity results, and operational recommendations.
Education Requirements
Candidates should possess one of the following qualifications (or equivalent):
- Bachelor’s Degree in Mining Engineering, Mineral Processing or related field.
- Professional certifications in drilling & blasting, explosives handling, or mineral quality assessment are an added advantage.
Working Experience Requirements
- Minimum 10 years of hands‑on experience in quartz mining and silica operations.
- Proven experience in DTH drilling, blast design, purity control, and contamination prevention for high‑purity mineral extraction.
- Experience working with high‑purity quartz (>99.5% SiO₂) is highly preferred.
- Familiarity with mineral laboratory analysis (XRF, ICP‑MS, XRD) and on‑site purity grading is an advantage.