Zemex Industrial Minerals

For decades, Zemex Industrial Minerals has been a cornerstone of New Zealand’s industrial and construction sectors, providing essential high-purity industrial minerals that support infrastructure development, sustainable agriculture, and advanced manufacturing.

As part of the Fletcher Building group — one of New Zealand’s largest building and materials companies — Zemex combines local expertise with national reach to deliver reliable, consistent, and responsibly sourced mineral solutions across the country.

🏗️ Who We Are

Zemex Industrial Minerals is a leading producer and supplier of non-metallic industrial minerals , including:

• Limestone (crushed and ground)
• Agricultural Lime
• Silica Sand
• Industrial Fillers
• Aggregates and Base Materials

These resources are extracted from carefully managed quarries across New Zealand, including key operations in Northland, Waikato, Bay of Plenty, and the North Island’s central regions .

Used in everything from motorways and buildings to farm fields and wastewater treatment, Zemex minerals are foundational to Kiwi progress.

⚙️ Key Applications Across Industries

Zemex Industrial Minerals serves a wide range of sectors with performance-driven products:

✅ Construction & Infrastructure

• Crushed limestone and aggregates for road bases, concrete, and asphalt
• High-calcium lime for soil stabilization and civil engineering projects

✅ Agriculture & Farming

• Agricultural lime to neutralize acidic soils and improve pasture productivity
• Widely used by dairy, sheep, and crop farmers across Northland and Waikato

✅ Manufacturing & Industry

• Ground calcium carbonate used as a filler in paints, plastics, and adhesives
• Silica sand for glass production and foundry casting

✅ Environmental & Water Treatment

• Limestone used in pH correction for stormwater and industrial effluent systems
• Neutralization media in mining and wastewater management

🌿 Sustainability and Responsible Resource Management

At Zemex, we believe natural resources should be used wisely and sustainably. Our environmental commitments include:

• Progressive land rehabilitation — restoring quarries into productive landscapes or conservation areas
• Water recycling in washing and screening processes
• Dust suppression and emissions monitoring
• Biodiversity protection in and around operational zones

Zemex works closely with local iwi (Māori tribes), councils, and environmental agencies to ensure all activities align with cultural values and regulatory standards.

❓ Frequently Asked Questions (FAQs)

Q: Where does Zemex Industrial Minerals operate in New Zealand?
A: Zemex has major quarry and processing operations in Northland, Waikato, and the upper North Island , with distribution networks reaching nationwide.

Q: Can I buy agricultural lime in bulk or bagged form?
A: Yes — we supply agricultural lime in bulk loads for large farms and in tonne bags or 25kg sacks through select rural retailers.

Q: Is Zemex committed to sustainability?
A: Absolutely. From land reclamation to low-emission transport options, sustainability is embedded in every stage of our operation.

Partner With Zemex Industrial Minerals

Whether you’re building critical infrastructure, improving farmland, or manufacturing high-performance materials, Zemex Industrial Minerals delivers quality, consistency, and Kiwi reliability.

📞 Contact your local Zemex team today to request a quote, product sample, or technical data sheet.

🌐 Learn more: www.zemex.co.nz
📍 Operates nationally from Northland to Taranaki and Auckland to Hawke’s Bay