| indianceramica@gmail.com |
Posted by Admin on April, 26, 2026

Premium-grade Soda Feldspar — also marketed as Albite, Sodium Feldspar, and White Feldspar — exported from Rajasthan, India by Aalok Overseas. Engineered for ceramic body stability, glaze brightness, and consistent batch fusion across tiles, sanitaryware, porcelain tableware, and technical ceramics.
Sodium Feldspar — mineral name Albite — belongs to the plagioclase feldspar series and is characterised by its dominant sodium content, expressed as Na₂O in XRF analysis. It is the sodium end-member of the albite–anorthite series (Ab₁₀₀ in pure form) and typically occurs in pegmatite and granite formations across the Ajmer, Bhilwara, and Sirohi belt of Rajasthan, India.
Unlike Potash Feldspar (Orthoclase / Microcline), Sodium Feldspar melts at a lower and broader temperature range — typically 1100–1150°C — making it especially valuable in fast-fire wall tile and floor tile body formulations where lower kiln energy cost is a competitive priority for ceramic manufacturers.
Chemical Formula: NaAlSi₃O₈ | Crystal System: Triclinic | Mohs Hardness: 6 – 6.5 | Specific Gravity: 2.60 – 2.63 | Colour (calcined): White to Cream-White
| Parameter | Aalok Typical Value | Industry Benchmark | Unit |
|---|---|---|---|
| SiO₂ (Silica) | 67.0 – 69.5 | 65 – 70 | % |
| Al₂O₃ (Alumina) | 19.0 – 21.0 | 18 – 22 | % |
| Na₂O (Sodium Oxide) | ≥ 9.5 | 8.5 – 10.5 | % |
| K₂O (Potassium Oxide) | 0.5 – 1.5 | < 2.0 | % |
| Fe₂O₃ (Iron Oxide) | ≤ 0.10 | < 0.15 | % |
| TiO₂ (Titanium Oxide) | ≤ 0.05 | < 0.10 | % |
| CaO (Calcium Oxide) | 0.3 – 0.8 | < 1.5 | % |
| LOI (Loss on Ignition) | 0.3 – 0.8 | < 1.0 | % |
| Whiteness Index (GE/ISO) | 85 – 92 | 80 – 88 | GE |
| Mesh / Fineness (standard) | 200 mesh / 325 mesh | Custom available | — |
| Packaging | 25 kg / 50 kg PP Bags or Bulk Jumbo | As per buyer | — |
* All values verified by XRF analysis. CoA dispatched with every shipment. Custom mesh sizes available on request.
Ceramic body and glaze formulators often focus on silica or alumina ratios — but in sodium feldspar, the Na₂O percentage is the single most commercially important specification. Here's why it dominates procurement decisions:
Na₂O is a more aggressive flux than K₂O at standard firing temperatures. Higher Na₂O means lower firing temperature and faster glass-phase formation — directly reducing kiln energy consumption per tonne of product.
In glaze formulations, higher Na₂O improves fluidity and surface shine without requiring additional zinc oxide or calcium carbonate — simplifying batch chemistry and reducing input cost per square metre.
High-purity albite deposits with Na₂O ≥ 9.5% tend to be lower in Fe₂O₃ and TiO₂ by geological association. The mineralogical purity that drives high Na₂O also delivers the 85–92 GE whiteness that sanitaryware and porcelain buyers demand.
Sourced from a fixed, dedicated mine — not multi-source aggregation — Aalok's sodium feldspar maintains Na₂O within a narrow band shipment to shipment, eliminating reformulation costs triggered by supplier variation.
Sodium Feldspar labelled as "soda feldspar" in the market can vary from Na₂O 7.5% to 11.5%. Without XRF CoA on every consignment, a buyer may unknowingly accept material with Na₂O below 8.5% — which will behave closer to a calcium plagioclase and underperform as a flux. Always specify minimum Na₂O in your purchase order and request batch-level XRF reports, not catalogue specs.
| Industry Segment | Role in Process | Critical Parameter | Export Markets |
|---|---|---|---|
| Wall & Floor Tiles | Body flux; lowers sintering temperature; promotes glass phase | Na₂O ≥ 9.5%; Fe₂O₃ < 0.10% | Vietnam, Indonesia, Malaysia, Bangladesh |
| Sanitaryware / Vitreous China | Body maturation, densification; glaze adhesion promoter | Whiteness 88+; LOI < 0.8% | Sri Lanka, Turkey (Kütahya), GCC |
| Porcelain Tableware | Translucency enhancement; reduces warpage through uniform glass phase | Fe₂O₃ < 0.08%; whiteness ≥ 90 | Vietnam (Bình Dương), Indonesia (Pasuruan) |
| Frit & Glaze Manufacture | Flux in frit batch; controls thermal expansion; surface gloss modifier | Na₂O consistency; low K₂O < 1.5% | Turkey, Malaysia, GCC |
| Technical / Industrial Ceramics | Electrical insulators, laboratory ware body composition | Al₂O₃ ≥ 20%; TiO₂ < 0.05% | Bangladesh (Gazipur), Malaysia |
| Glass & Fibre Glass | Alkali source; reduces melting temperature; improves workability | Na₂O + K₂O ≥ 10%; Fe₂O₃ < 0.12% | GCC (Ras Al Khaimah), Bangladesh |
Both minerals are feldspars — but they are NOT interchangeable without body reformulation. The choice hinges on your firing profile, glaze target, and end-product specification.
| Criterion | Sodium Feldspar (Albite) | Potash Feldspar (Orthoclase) |
|---|---|---|
| Dominant Alkali | Na₂O ≥ 9.5% | K₂O ≥ 10–11% |
| Melting / Fusion Range | 1100–1150°C (Lower) | 1150–1250°C (Higher) |
| Glass Phase Formation | Faster, more fluid | Slower, more viscous |
| Thermal Expansion | Higher (requires COE matching) | Lower, more stable |
| Best For | Fast-fire tiles, frits, glazes, glass | Sanitaryware, fine porcelain, insulators |
| Whiteness Range | 85 – 92 GE | 85 – 92 GE |
| Aalok Supply Link | Soda Feldspar → | Potash Feldspar → |
One of Asia's fastest-growing ceramic tile hubs. Buyers seek low Fe₂O₃ soda feldspar for fast-fire wall tile lines. Price-sensitive but increasingly quality-focused as export orders to Europe rise. Key query terms: tràng thạch natri, fenspat natri.
Significant sanitaryware and floor-tile production base. Buyers need consistent Na₂O + whiteness for vitreous china bodies. Indonesian procurement managers search feldspar natrium, soda feldspar Indonesia.
Mix of tile manufacturers and frit/glaze producers. Prefer 200 mesh standard fineness with consistent chemistry. Procurement searches: feldspar natrium, sodium feldspar Malaysia.
One of the world's largest porcelain tableware exporters. Technical buyers specify mineralogy-level detail. Turkish query terms: sodyum feldispat, albit, düşük demirli feldispat.
Growing ceramic tile and tableware sector. Cost-efficiency plus quality improvement drive Indian feldspar imports. Search terms: সোডা ফেল্ডস্পার, সোডিয়াম ফেল্ডস্পার.
Sanitaryware and tile production hubs serving Middle East construction boom. Arabic search terms: الفلسبار الصودي، الألبيت، فلسبار الصوديوم.
Sanitaryware and tableware exporters with strict whiteness requirements for EU market compliance. Sinhala: සෝඩා ෆෙල්ඩ්ස්පාර්.
If your ceramic body or glaze shows any of these defects, inconsistent or under-specified feldspar chemistry is frequently the root cause — before firing temperature or forming variables are blamed.
Likely cause: Inconsistent Na₂O between batches. Glaze surface tension varies, causing the melt to bead and pull away from the body during firing.
Likely cause: Elevated LOI or impurity carbonate inclusion. Gas release during firing cannot escape closed glaze melt, creating surface pits in the fired tile.
Likely cause: Fe₂O₃ above 0.15% or TiO₂ above 0.10% in feldspar. Both impart warm coloration incompatible with high-whiteness sanitaryware and porcelain specifications.
Likely cause: Variable alkali oxide ratio (Na₂O + K₂O) across consignments shifts the glass phase onset temperature, causing dimensional inconsistency in the fired body.
Aalok Overseas provides XRF-verified Certificate of Analysis with every shipment and a 48-hour sample dispatch for pre-order qualification testing. Our dedicated mine sourcing eliminates the batch-to-batch variation that causes the defects above.
| Parameter | Detail |
|---|---|
| Mine Location | Rajasthan, India (dedicated single-mine sourcing) |
| Processing Plant | Rajasthan — crushing, grinding, sizing, quality control |
| Export Ports | Mundra Port (primary) · JNPT / Nhava Sheva |
| Packaging Options | 25 kg PP bags · 50 kg PP bags · Jumbo Bags (600–1000 kg) · Bulk |
| Minimum Order | 1 × 20 FCL (full container load) · Sample lots available |
| Payment Terms | T/T in advance · L/C at sight (for established buyers) |
| Documents Provided | XRF CoA · Packing List · Commercial Invoice · B/L · Certificate of Origin · MSDS |
| Sample Dispatch | Within 48 hours of request confirmation |
Procurement managers, R&D heads, and raw material buyers search for this mineral in their native language. Aalok Overseas supplies to all of these markets.
These are the same mineral — the terms are used interchangeably in the ceramics trade. The scientific mineral name is Albite. In commerce, "Soda Feldspar" emphasises the sodium (Na) dominance, while "Sodium Feldspar" is the more formal chemical designation. All refer to NaAlSi₃O₈.
Not without reformulation. Soda feldspar has a lower and broader melting range than potash feldspar and a higher thermal expansion coefficient. A direct replacement without adjusting the silica/alumina balance and glaze COE will cause crawling, shivering, or warpage. Our technical team can advise on substitution ratios for your specific body formula.
Minimum order is 1 × 20-foot FCL (approximately 25–28 MT). Samples are dispatched within 48 hours. Standard container shipment lead time from Rajasthan to Mundra port is 3–5 working days; sea transit depends on destination port.
Yes. A batch-specific XRF CoA is provided with every consignment — not a generic catalogue spec. You receive the actual tested values for the specific production lot loaded in your container. Third-party testing arrangements can also be accommodated on request.
Yes. We can process to custom mesh requirements including coarser grades for body crushing applications and ultra-fine grades for glaze and frit manufacture. Please specify D50 or mesh requirement with your enquiry. Custom mesh products carry a lead time premium.
Our export team responds within 24 hours. Samples dispatched within 48 hours of confirmation. XRF CoA provided with every enquiry response.
sodium feldspar · soda feldspar · albite · white feldspar · Na₂O 9.5% · high whiteness feldspar · low iron feldspar · ceramic feldspar · feldspar India · Rajasthan feldspar · feldspar exporter India · potash feldspar · quartz powder India · mineral exporter Rajasthan · ceramic raw materials India · wall tile minerals · sanitaryware minerals · glaze minerals · frit minerals · porcelain raw materials · albite export India · soda spar · plagioclase feldspar · NaAlSi3O8
© Aalok Overseas India · www.feldsparindia.com · www.aalokoverseas.com · All specifications subject to XRF verification · Rajasthan, India
Search
Recent Posts
Raise your Query
Hi! Simply click below and type your query.
Our experts will reply you very soon.
Leave a Comment