Insights
Notes on quartz grades, geology, supply chains and processing, written for buyers and engineers.
Quartz particle sizes: mesh to micron
A mesh-to-micron table using standard test sieve openings, and how to write a size range a supplier can check.
Quartz purity grades: what 3N, 4N and 5N mean for buyers
What 3N, 4N and 5N mean, why SiO2 is often calculated by difference, and what to check instead.
Sri Lanka’s vein quartz: geology, variation and testing
Why Sri Lankan vein quartz can be high in SiO2, why purity varies across a deposit, and what that means for buyers.
From quarry to clean room: how quartz moves from mine to semiconductor fab
The stages between a quartz vein and a semiconductor fab, who runs each one, and where processed vein quartz fits.
Quartz in the solar supply chain: where feedstock ends and crucible grade begins
Quartz appears twice in photovoltaics, as raw material for silicon and as crucibles for ingots. Each has its own specification.
Sourcing quartz feedstock for export: specification, sampling and shipping
A buyer’s order of work for bulk quartz, from the first specification to repeat shipments.
Processing routes and environmental footprint: what can be claimed
How dry, wet and chemical routes differ in energy, water and chemical use, and why a footprint claim needs a lifecycle assessment.
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