Industrial Minerals

Quartz Trading

We specialize in high-purity quartz essential for semiconductor and solar industries, with rigorous quality control standards.

Business Overview

Global Group Korea has secured exclusive worldwide distribution rights for high-purity quartz through a strategic partnership with VISH KVARTZ INTANZ in Tanzania. Our quartz is an essential material for the semiconductor and solar industries.

VISH KVARTZ INTANZ operates 18 quartz mines across two regions and three locations in Tanzania, with a confirmed reserve base of 18 million metric tons. Achieving exceptional silica (SiO₂) purity ranging from +99.9% to +99.99% with electrical conductivity below 4 μS/cm, our quartz meets the most stringent demands of the global semiconductor, photovoltaic, and fibre optic industries.

18MMetric Ton Reserves

99.99%SiO₂ Purity

18Quartz Mines

Chemical Analysis Report

Certified quality analysis of our Tanzanian high-purity quartz

Test Parameters	Analysis Results (% / ppm)
SiO₂ (%)	+99.99 – +99.9
Fe₂O₃ (ppm)	0.0002 – 0.0043
Al₂O₃ (ppm)	0.0021 – 0.0046
Na₂O (ppm)	0.0001 – 0.0004
K₂O (ppm)	0.0002 – 0.0009
CaO (ppm)	0.0004 – 0.0005
MgO (ppm)	0.0002 – 0.0004
Ti (ppm)	0.0005 – 0.0008

Electrical Conductivity (EC)< 4 μS/cm

Mining Operations & Logistics

18 quartz mines across two regions and three locations in Tanzania

Kwaluguru

Tanga Region

Magali

Morogoro Region

Msongozi

Morogoro Region

Quartz Mines

12-15 km

National Highway

250 km

Dar es Salaam Port

Global Export

Production Capacity

Scalable output from each mining site to meet growing demand

Sorted & Sized Boulders

Size50–300 mm

Capacity5,000–10,000 tons/month per site

Dressed Lumps

Size50–150 mm

Capacity1,000–2,000 tons/month per location

Production capacity is scalable to match increasing demand with consistent quality assurance.

Key Features

Exclusive Distribution

Sole company with worldwide distribution rights for VISH KVARTZ INTANZ Tanzanian quartz.

Ultra-High Purity

Supplies high-purity quartz of 99.99% or higher, meeting semiconductor and solar industry standards.

Stable Supply

Guarantees long-term supply stability based on a confirmed reserve base of 18 million metric tons across 18 mines, with each site capable of delivering 5,000 to 10,000 tons per month.

Consistent Quality

Quartz from a single mine enables consistent quality management, minimizing production deviation.

Semiconductor Grade

Catering to critical applications including semiconductor silicon wafer production, photovoltaic (PV) cell manufacturing, and fibre optic systems.

Massive Reserves

With 18 million metric tons of confirmed reserves across 18 mines, we ensure decades of uninterrupted supply for your long-term projects.