At Dhofar Mining Company, we produce and supply natural raw gypsum in a variety of size ranges — from fine powder (0–5 mm) to large aggregates (50–100 mm). Each size is carefully processed to meet diverse applications, whether for cement production, plaster, agriculture, or industrial use. This flexibility ensures our clients receive the exact specifications required for their projects, with consistent quality every time.
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50 – 100mm
Natural Raw Gypsum
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25 – 50mm
Natural Raw Gypsum
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05 – 25mm
Natural Raw Gypsum
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00 – 50mm
Natural Raw Gypsum
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00 – 25mm
Natural Raw Gypsum
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00 – 05mm
Natural Raw Gypsum
NATURAL GYPSUM
TECHNICAL DATA
| Parameters | Standard of Analysis | Min | Max |
|---|---|---|---|
| Calcium as CaO | ASTM C471M | 30% | 33% |
| Magnesium as MgO | ASTM C471M | < 0.5 % | < 1.5 % |
| Silica as SiO₂ | ASTM C25 | 0.30% | 1% |
| Iron as Fe₂O₃ | ASTM C25 | < 0.01 | |
| Aluminium as Al₂O₃ | ASTM C25 | < 0.01 | |
| Combined water (215 - 230°C) / Crystal Water | ASTM C471M | 18.65% | 20.10% |
| Total Sulphate as SO₃ | ASTM C471M | 42.00% | 45.10% |
| Moisture (Free Water) | ASTM C471M | 0.10% | 2% |
| Chloride as NaCl | ASTM C471M | 0.003% | 0.01% |
| pH | ASTM C25 / pH probe | 7 | 8 |
| Gypsum Purity (CaSO₄·2H₂O) | ASTM C471M | 90% | 96.50% |
Quality Management Policy
Dhofar Mining through ERP, systems and procedures ensure:- Full delivery of a quality product and service.
- Customer Service is inherent to the business.
- All work is carried out to a defined standard.
- Adequate skills and resources to fulfill customer requirements.
- Staff are fully trained.
- Strive to continuously improve.
- Complaints are dealt with efficiently and timely.
- Supports strategic direction and provides a framework for setting quality objectives.
- Ensures commitment to satisfy applicable requirements and a commitment to continual improvement of the quality management system.