QUARTZ
Critical industrial mineral, valued for its high silica content, low impurities, and versatility. Mineastra supplies Quartz in Lumps, Grits, Powder, and HPQ (High-Purity Quartz), serving glass, ceramics, electronics, foundries, engineered stone, and construction industries. With partner mine capacity of 8,000–10,000 MT/month, Mineastra delivers consistent bulk supply of Quartz Lumps, Grits, and Powder for glass, ceramics, and industrial buyers.
EXTENDED PRODUCT DESCRIPTION
APPLICATION IMAGES
EXTENDED SPECS
RAW STONES
QUARTZ
LUMPS
White (Snow-White Grade)
Semi-white / off-white
Snow White Quartz Lumps
SiO₂ (Silica): 99.5%
Al₂O₃ (Alumina): ≤ 0.3%
Fe₂O₃ (Iron Oxide): ≤ 0.02%
Moisture: < 0.1%
Whiteness: 97%
Color / Appearance: Brilliant, pure white
Applications:
High-grade glass manufacturing
Optical glass
Solar glass
Premium engineered stone (slabs & countertops)
High-purity ceramics
Industrial
Industrial Grade Quartz Lumps
SiO₂ (Silica): 97%
Al₂O₃ (Alumina): 1.5%
Fe₂O₃ (Iron Oxide): 0.15%
Moisture: < 0.5%
Whiteness: 85%
Color / Appearance: White-grey, brownish patches
Applications:
Bulk cement production
Ferro-silicon alloying
Construction fillers
Refractory bricks
Chemical industries
Milky White
Milky White Quartz Lumps
SiO₂ (Silica): 98.5-99.5%
Al₂O₃ (Alumina): 0.3% – 0.7%
Fe₂O₃ (Iron Oxide): 0.03-0.05%
Moisture < 0.2%
Whiteness: 90% – 94%
Color / Appearance: Bright milky white, uniform, minimal patches
Applications:
Countertops & engineered stone (quartz surfaces)
Glass manufacturing (clear/colored glass)
High-end ceramics & sanitaryware
Foundry applications
Physical Specifications
Size Fractions (Screened & Graded): 25 – 50 mm, 50 – 100 mm, 100 – 150 mm, 150 – 250 mm, 250 mm
Density / Bulk Density: 1.55 – 1.65 g/cm³
Hardness (Mohs): 7
Thermal Stability: Melting point ~1710°C
Sorting & Grading
Sorting Method: Manual handpicking, optical sorting, or mechanized screening
Impurity Control:
Low Fe₂O₃ for glass & ceramics
Strict selection for engineered stone
Properties: Lusture, Hardness, Fracture, Density, Melting point,
Packaging & Supply
Packaging Options:
Jumbo bags (1 MT)
HDPE woven bags (50 kg)
Loose container loading
Container Capacity: ~25 MT / 20 ft container.
Off White / Cream Quartz Lumps
SiO₂ (Silica): 98.5%
Al₂O₃ (Alumina): 1.0%
Fe₂O₃ (Iron Oxide): 0.08%
Moisture: < 0.3%
Whiteness: 92%
Color / Appearance: Slight cream / off-white
Applications:
Regular glass manufacturing
Sanitaryware ceramics
Foundries (moulding sand)
Paints & coatings fillers
Refractories
Snow-white Grits
Semi White Quartz Grits
SiO₂ (Silica): 98.5%
Al₂O₃ (Alumina): 1.0%
Fe₂O₃ (Iron Oxide): 0.08%
Moisture: < 0.3%
Whiteness: 92% (slight cream)
Color / Appearance: Off-white / cream shade
Applications:
Container & regular glass
Sanitaryware ceramics
Refractories
Foundries (moulding sand)
Paints & coatings fillers
Physical Specifications
Size Fractions (Screened & Graded): 0.1 – 0.3 mm, 0.3 – 0.6 mm, 0.6 – 1.2 mm, 1.2 – 2.5 mm, 2.5 – 4.0 mm, 4.0 – 6.0 mm, 6.0 – 10 mm
Density / Bulk Density: 1.55 – 1.65 g/cm³
Hardness (Mohs): 7
Thermal Stability: Melting point ~1710°C
Sorting & Grading
Sorting Method: Multi-stage crushing, sieving, and optional optical sorting for premium grades
Impurity Control:
Snow White: Ultra-low Fe₂O₃ (<0.02%) for solar, optical glass, engineered stone
Semi White: Balanced Fe₂O₃ levels, strict sizing for sanitaryware/ceramics
Industrial Mixed: Higher tolerance impurities, optimized for cement & metallurgical industries
Packaging & Supply
Packaging Options:
Jumbo bags (1 MT)
HDPE woven bags (50 kg)
Loose container loading
Container Capacity: ~25 MT / 20 ft container.
GRITS
Industrial Grits
Industrial Quartz Grits
SiO₂ (Silica): 97%
Al₂O₃ (Alumina): 1.5%
Fe₂O₃ (Iron Oxide): 0.15%
Moisture < 0.5%
Whiteness: 80 – 85% (greyish)
Color / Appearance: White-grey, mixed tone powder
Applications
Bulk cement production
Construction fillers
Ferro-silicon alloying
Refractory bricks
Chemical industries
Semi-white Grits
Snow White Quartz Grits
SiO₂ (Silica): 99.5%
Al₂O₃ (Alumina): ≤ 0.3%
Fe₂O₃ (Iron Oxide): ≤ 0.02%
Moisture: < 0.1%
Whiteness: 97%
Color / Appearance: Brilliant, pure white
Applications:
High-grade glass manufacturing
Optical glass
Solar glass
Premium engineered stone (slabs & countertops)
High-purity ceramics
POWDER
Semi White Quartz Powder
SiO₂ (Silica): 98.5%
Al₂O₃ (Alumina): 1.0%
Fe₂O₃ (Iron Oxide): 0.08%
Moisture: < 0.3%
Whiteness: 92% (slight cream)
Color / Appearance: Off-white / cream shade
Applications
Container & regular glass
Sanitaryware ceramics
Refractories
Foundries (moulding sand)
Paints & coatings fillers
MICRONISED
Snow White Quartz Powder
SiO₂ (Silica): 99.5%
Al₂O₃ (Alumina) ≤ 0.3%
Fe₂O₃ (Iron Oxide) ≤ 0.02%
Moisture < 0.1%
Whiteness: 96 – 97% (ultra white)
Color / Appearance: Pure brilliant white, fine powder
Applications
Engineered stone & quartz slabs
Optical & solar glass
High-purity ceramics
Paints & coatings fillers
Plastics & polymers
Industrial Quartz Powder
SiO₂ (Silica): 97%
Al₂O₃ (Alumina): 1.5%
Fe₂O₃ (Iron Oxide): 0.15%
Moisture < 0.5%
Whiteness: 80-85% (greyish)
Color / Appearance: White-grey, mixed tone powder
Applications
Bulk cement production
Construction fillers
Ferro-silicon alloying
Refractory bricks
Chemical industries
Physical Specifications
Particle Sizes (Micronized):
D50 = 45 µm, 38 µm, 25 µm, 20 µm, 10 µm, 5 µmDensity / Bulk Density: 1.55 – 1.65 g/cm³
Hardness (Mohs): 7
Thermal Stability: Melting point ~1710°C
Sorting & Grading
Sorting Method: Multi-stage crushing → ball mill/pulverizing → micronized sieving → air classification
Impurity Control:
Snow White Powder: Ultra-low Fe₂O₃ for engineered stone, solar glass, optical-grade uses
Semi White Powder: Controlled Fe₂O₃ for ceramics, fillers, refractories
Industrial Powder: High tolerance impurities, used in cement, ferro-alloys, and refractory mixes
Packaging & Supply
Packaging Options:
Jumbo bags (1 MT)
HDPE woven bags (50 kg)
Loose container loading
Container Capacity: ~25 MT / 20 ft container.
Supply Format: Export-ready, consistent micronized grades