Quartz Lumps

Quartz Lumps from Pakistan

Quartz is the most abundant silica mineral on Earth’s continents. It occurs as large crystals and veins in igneous, metamorphic, and sedimentary rocks. The purest quartz deposits, containing over 98% SiO₂, are the primary source of raw material for manufacturing fused quartz, silicon metal, ferrosilicon, silica sand, and other high-value silica products. Pakistan’s diverse geology hosts several high-grade quartz deposits, making it a significant global supplier of quartz lumps for industrial applications.

Typical Composition

• SiO₂: 98-99.5%

• Fe₂O₃: 0.02-0.1%

• Al₂O₃: 0.1-0.5%

• TiO₂: < 0.03%

• CaO + MgO: < 0.1%

• Na₂O + K₂O: < 0.2%

• LOI: < 0.3%

Available Sizes

• 10-30 mm

• 30-80 mm

• 50-100 mm

• Customized sizing available

Key Properties

• Hardness (Mohs): 7

• Specific Gravity: 2.65

• Melting Point: 1670 °C

• Thermal Expansion: 0.5 x 10⁻⁶/°C

• Dielectric Constant: 4.2 at 20 °C

• Piezoelectric Constant (d11): 2.31 pC/N

• Resistivity: 7.5 x 10¹⁷ ohm-cm at 20 °C

Quality Assurance

Each lot is accompanied by a Certificate of Analysis detailing full chemical composition, purity grade, and sizing. Purity and trace elements can be customized to meet specific customer requirements. Pre-shipment samples are provided for client approval. Independent lab testing and on-site inspection can be arranged on request.