Product Category · 04 / 06

Feldspar

Rajasthan-sourced Feldspar in three grades — Standard (blended), Soda Feldspar (Na₂O-rich), and Potash Feldspar (K₂O-rich) — for glass manufacturing, ceramics, sanitaryware, and tile industries worldwide.

Explore Grades ↓ Request Quote

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Feldspar (Standard)

Na₂O + K₂O 10–13% · Blended flux grade

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Soda Feldspar

Na₂O 8–10.5% · Glass & ceramics grade

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Potash Feldspar

K₂O 8–11% · Ceramics & sanitaryware

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Products in Category

Rajasthan

Primary Sourcing Belt

Na₂O/K₂O

Flux Oxides

CoA

With Every Shipment

Feldspar Exporter Rajasthan◆ Soda Feldspar India◆ Potash Feldspar Ceramics◆ Na₂O Flux Glass Grade◆ K₂O Flux Ceramic Grade◆ Feldspar Powder -200 Mesh◆ Sanitaryware Glaze Flux◆ Feldspar Exporter Rajasthan◆ Soda Feldspar India◆ Potash Feldspar Ceramics◆ Na₂O Flux Glass Grade◆ K₂O Flux Ceramic Grade◆ Feldspar Powder -200 Mesh◆ Sanitaryware Glaze Flux◆

Feldspar mineral Rajasthan export pink white soda potash

Rajasthan Sources

Major feldspar producing state

Soda & Potash grades available

Lumps & -200 mesh powder

📍 Directly Sourced · Rajasthan, India

Category Overview

India's Largest
Feldspar Producer

Rajasthan is one of India's largest producers of Feldspar, with extensive deposits supplying the glass, ceramics, tiles, and sanitaryware industries both domestically and globally. GeoCore Minerals offers Feldspar in three forms — a standard blended grade, Soda Feldspar, and Potash Feldspar — allowing buyers to select the flux profile best suited to their manufacturing process.

◆Soda Feldspar: Na₂O 8–10.5% — preferred for glass manufacturing where sodium flux is required

◆Potash Feldspar: K₂O 8–11% — preferred for ceramics and sanitaryware for smoother glaze finish

◆Standard Grade: combined Na₂O + K₂O 10–13% — versatile blended flux for general ceramic/glass use

◆Available in lumps and powder (-200 mesh); CoA with Na₂O, K₂O, SiO₂, Al₂O₃, Fe₂O₃ per shipment

Feldspar Standard ↓ Compare All Grades

Understanding Feldspar

Why Flux Oxide Type Matters

Feldspar is a flux — it lowers the melting temperature of ceramic or glass batches. But the type of flux oxide (Na₂O vs K₂O) determines which grade suits your specific application.

Na₂O

Sodium Oxide — Albite end-member

Soda Feldspar

Rich in sodium oxide — Na₂O acts as a strong flux that significantly lowers the melting temperature of the glass or ceramic batch. Preferred where fluidity and clarity are critical, especially in glass manufacturing. Soda Feldspar also improves chemical durability of the final glass product.

Glass Manufacturing Ceramics Fiberglass

K₂O

Potassium Oxide — Orthoclase end-member

Potash Feldspar

Rich in potassium oxide — K₂O produces a higher viscosity melt compared to Na₂O, which gives ceramic bodies better workability and produces a smoother, glossier glaze finish. Preferred for sanitaryware, high-quality floor tiles, and porcelain where glaze quality is paramount.

Ceramics & Sanitaryware Tile Manufacturing Glazes

Na₂O
+K₂O

Combined flux — blended grade

Feldspar (Standard Grade)

A blended product combining both Na₂O and K₂O flux content — offered as a cost-effective, versatile option for buyers whose processes do not require a strictly soda- or potash-dominant composition. Widely used as a general-purpose flux in ceramics, glass, and tile manufacturing.

General Ceramics Glass Tiles

Feldspar

Feldspar (Standard Grade)

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Feldspar (Standard Grade)

Blended Na₂O + K₂O Flux · Rajasthan

Flux Oxide Profile — All Three Grades

Standard Na₂O+K₂O

10–13%

Soda Na₂O

8–10.5%

Potash K₂O

8–11%

Fe₂O₃ Max

0.3%

CeramicsGlassTilesGeneral Flux

Feldspar (Standard Grade)

GeoCore Minerals' standard Feldspar is a blended-grade product combining both soda (Na₂O) and potash (K₂O) flux content, offered as a versatile, cost-effective option for buyers whose processes don't require a strictly soda- or potash-dominant composition. It is widely used as a flux in ceramics, glass, and tile manufacturing to lower melting temperatures and improve product strength.

Indicative Specifications

SiO₂	65% – 70%
Al₂O₃	17% – 20%
Na₂O + K₂O (Combined Flux)	10% – 13%
Fe₂O₃ (Iron Oxide)	0.1% – 0.3%
Moisture	0.5% – 1.5%
Form	Lumps / Powder
Mesh Size	-200 mesh (or as per requirement)

Specifications subject to confirmation per order and grade. Combined Na₂O+K₂O reported as total flux — individual oxide breakdown available on request. CoA provided with every shipment.

Applications

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Ceramics (General)

Tile body, stoneware, general ceramic flux

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Glass Manufacturing

General glass batch formulations

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Floor & Wall Tiles

Cost-effective flux for standard tile grades

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Construction Ceramics

Terracotta and structural ceramics

Packaging

🧺

25kg / 50kg

HDPE / PP woven bags

📦

Jumbo Bags

1MT FIBC bags

🚢

Bulk Loading

Container / vessel

Request Quote ↗ Compare All Grades

Feldspar

Soda Feldspar

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Soda Feldspar

Na₂O 8–10.5% · Glass & Ceramics Grade

Flux Oxide Profile — All Three Grades

Standard Na₂O+K₂O

10–13%

Soda Na₂O

8–10.5%

Potash K₂O

8–11%

Fe₂O₃ Max

0.2%

GlassCeramicsFiberglassContainer Glass

Soda Feldspar

Soda Feldspar is rich in sodium oxide (Na₂O), making it especially suited for glass manufacturing, where it lowers melting temperature while improving the chemical durability and clarity of the final product. GeoCore Minerals sources Soda Feldspar processed to consistent purity and low iron content for buyers requiring tighter flux specifications. The lower K₂O content (<2%) ensures a clean sodium flux profile without potassium interference.

Key Parameter

8–10.5%

Na₂O (Sodium Oxide)

K₂O Limit

<2%

Low potassium ensures clean Na flux

Indicative Specifications

SiO₂	66% – 70%
Al₂O₃	18% – 20%
Na₂O	8% – 10.5%
K₂O	<2%
Fe₂O₃ (Iron Oxide)	0.05% – 0.2%
Moisture	0.5% – 1.5%
Form	Lumps / Powder
Mesh Size	-200 mesh (or as per requirement)

Na₂O and K₂O are the critical parameters — buyers should specify minimum Na₂O and maximum K₂O at inquiry. CoA provided with every shipment.

Applications

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Container Glass

Bottles, jars — Na flux improves clarity

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Flat & Float Glass

Architectural glass & window panes

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Ceramics

Tile body and general ceramic flux

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Fiberglass

Na-dominant flux for fibre glass batch

Packaging

🧺

25kg / 50kg

HDPE / PP woven bags

📦

Jumbo Bags

1MT FIBC bags

🚢

Bulk Loading

Container / vessel

Request Quote for Soda Feldspar ↗ Compare All Grades

Feldspar · Premium Ceramic Grade

Potash Feldspar

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Potash Feldspar

K₂O 8–11% · Premium Ceramic & Sanitaryware Grade

Flux Oxide Profile — All Three Grades

Standard Na₂O+K₂O

10–13%

Soda Na₂O

8–10.5%

Potash K₂O

8–11%

Fe₂O₃ Max

0.25%

CeramicsSanitarywarePorcelainGlazes

Potash Feldspar

Potash Feldspar is rich in potassium oxide (K₂O), prized in ceramics, sanitaryware, and tile manufacturing for the smoother glaze finish and improved thermal stability it imparts during firing. The higher viscosity of the K₂O melt compared to Na₂O produces a more controlled firing behaviour and a superior surface finish — making Potash Feldspar the preferred grade for premium ceramic producers worldwide.

Key Parameter

8–11%

K₂O (Potassium Oxide)

Na₂O Limit

<2.5%

Low sodium ensures clean K flux

Indicative Specifications

SiO₂	64% – 68%
Al₂O₃	17% – 19%
K₂O	8% – 11%
Na₂O	<2.5%
Fe₂O₃ (Iron Oxide)	0.05% – 0.25%
Moisture	0.5% – 1.5%
Form	Lumps / Powder
Mesh Size	-200 mesh (or as per requirement)

K₂O is the critical parameter for ceramic buyers. Specify minimum K₂O and maximum Na₂O requirements at inquiry stage. CoA with full oxide breakdown provided with every shipment.

Applications

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Sanitaryware

Casting slip & vitreous glaze

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Premium Ceramics

High-end tile bodies and glazes

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Porcelain & Bone China

Fine tableware and translucent porcelain

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Technical Ceramics

Electrical insulators and substrates

Packaging

🧺

25kg / 50kg

HDPE / PP woven bags

📦

Jumbo Bags

1MT FIBC bags

🚢

Bulk Loading

Container / vessel

Request Quote for Potash Feldspar ↗ Compare All Grades

Specification Reference

All Three Grades — Side by Side

Compare Na₂O, K₂O, SiO₂, and Al₂O₃ across all Feldspar grades to choose the right one for your process.

Parameter	Feldspar (Standard)	Soda Feldspar	Potash Feldspar
SiO₂	65% – 70%	66% – 70%	64% – 68%
Al₂O₃	17% – 20%	18% – 20%	17% – 19%
Na₂O	Combined with K₂O	8% – 10.5%	<2.5%
K₂O	Combined with Na₂O	<2%	8% – 11%
Na₂O + K₂O (Total)	10% – 13%	~10–12%	~9–13%
Fe₂O₃ (Iron Oxide)	0.1% – 0.3%	0.05% – 0.2%	0.05% – 0.25%
Moisture	0.5% – 1.5%	0.5% – 1.5%	0.5% – 1.5%
Form	Lumps / Powder	Lumps / Powder	Lumps / Powder
Mesh Size	-200 mesh (or as required)	-200 mesh (or as required)	-200 mesh (or as required)
Primary Use	General ceramics, glass, tiles	Glass manufacturing, ceramics	Ceramics, sanitaryware, glazes, porcelain
Key Advantage	Versatile, cost-effective blended grade	Clean Na₂O flux for glass clarity	Smooth glaze finish, superior ceramic bodies
Packaging	All grades: 25kg/50kg bags · Jumbo bags (1MT) · Bulk loading — as per buyer requirement

All specifications are indicative. Na₂O/K₂O ratios are often the exact parameter ceramic and glass buyers negotiate on — confirmed values provided via CoA with each shipment. Specify your minimum flux oxide requirement at inquiry.

Industries We Supply

Where Feldspar
Is Used

Feldspar is the world's most abundant mineral group and a critical raw material across ceramics, glass, and construction industries.

🏺

Ceramics & Sanitaryware

Feldspar is an essential flux in ceramic body formulations — it lowers firing temperature, promotes vitrification, and improves mechanical strength. Potash Feldspar is preferred for premium sanitaryware and porcelain for its superior glaze finish.

Potash FeldsparStandard Grade

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Glass Manufacturing

Soda Feldspar contributes Na₂O to the glass batch — acting as a network modifier that lowers melting temperature, reduces viscosity, and improves chemical durability. Used in container, flat, and specialty glass production.

Soda FeldsparStandard Grade

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Floor & Wall Tiles

Both Soda and Potash Feldspar are used in tile body formulations and surface glazes. The flux oxide profile selected depends on firing temperature, tile format, and desired surface finish specification of the tile producer.

Soda FeldsparPotash Feldspar

🍽️

Porcelain & Fine Tableware

Snow-white porcelain tableware requires high-purity Potash Feldspar with low Fe₂O₃ content. K₂O's higher melt viscosity produces the precise control needed for the translucency and finish of fine bone china and porcelain.

Potash Feldspar

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Fiberglass

Soda Feldspar is used as a source of Al₂O₃ and Na₂O in the fiberglass batch — contributing to the chemical durability and mechanical properties of glass fibres used in insulation and composite materials.

Soda Feldspar

🔬

Technical & Specialty Ceramics

Electrical insulators, substrates, and laboratory ceramics require precise flux oxide control. Potash Feldspar's controlled K₂O content and consistent Al₂O₃ make it the grade of choice for technical ceramic manufacturers.

Potash Feldspar

Sourcing & Quality

From Rajasthan's
Feldspar Belt to Your Plant

A transparent, documented supply process — from mine to export port.

Mine Sourcing

Direct relationships with feldspar mines and processing units across Rajasthan's established mineral belts — India's leading feldspar-producing state.

Crushing & Grinding

Feldspar lumps crushed and milled to -200 mesh or other particle size as per buyer specification. Wet or dry processing available depending on grade requirements.

Chemical Testing

Pre-shipment laboratory analysis: SiO₂, Al₂O₃, Na₂O, K₂O, Fe₂O₃, moisture, and loss on ignition (LOI) — reported per confirmed buyer specification.

Grade Separation

Soda and Potash grades are sourced and processed separately to maintain distinct Na₂O/K₂O profiles — not blended post-processing.

Packaging

25kg/50kg HDPE/PP bags, 1MT jumbo bags (FIBC), or bulk container loading — sealed and batch-labelled with grade and lot identification.

Export Documentation

Commercial Invoice, Packing List, Bill of Lading, Certificate of Origin, CoA — shipped via Mundra, Kandla, or JNPT on FOB, CIF, or CFR terms.

Request a Quote

Source Premium
Feldspar from Rajasthan

Share your grade, flux oxide requirement (Na₂O/K₂O minimum), mesh size, quantity, and destination — we'll respond within 24–48 hours.

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Response within 24–48 hours

✓

Full oxide breakdown CoA per shipment

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Sample available on request

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FOB / CIF / CFR Incoterms

WhatsApp Direct

Feldspar Inquiry Form

Feldspar Grade *

Your Name *

Company

Email *

Phone / WhatsApp

Form Required

Quantity (MT)

Destination Port

Incoterm

Flux Oxide Specification

Feldspar

India's LargestFeldspar Producer

Why Flux Oxide Type Matters

Feldspar (Standard Grade)

Feldspar (Standard Grade)

Soda Feldspar

Soda Feldspar

Potash Feldspar

Potash Feldspar

All Three Grades — Side by Side

Where FeldsparIs Used

From Rajasthan'sFeldspar Belt to Your Plant

Source PremiumFeldspar from Rajasthan

Related Product Categories

India's Largest
Feldspar Producer

Where Feldspar
Is Used

From Rajasthan's
Feldspar Belt to Your Plant

Source Premium
Feldspar from Rajasthan