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Posted by Admin on August, 26, 2026
"Silica quartz" covers a range of processed forms and purity tiers, from standard industrial lumps to fine ceramic-grade powder to high-purity quartz for solar and electronics use. This guide maps the category, then covers Vietnam and Taiwan destination ports, indicative pricing, and packing options for buyers sourcing from India.
On This Page
- What Does "Silica Quartz" Cover?
- The Three Forms: Lumps, Powder & High-Purity Quartz
- Understanding High-Purity Quartz (HPQ)
- Which Form Does Your Industry Need?
- Destination Ports in Vietnam
- Destination Ports in Taiwan
- Indicative FOB Pricing by Form & Grade
- Packing Options for Export
- Frequently Asked Questions
What Does "Silica Quartz" Cover?
Silica quartz is the umbrella mineral name for crystalline silicon dioxide (SiO2) sourced from natural quartz rock. It isn't a single product — it's a category that gets processed into different physical forms and purity tiers depending on where it's headed next: a smelting furnace, a ceramic body, a glass melt, or a solar-grade crucible. Understanding which form and tier you need is really the first sourcing decision, before purity percentages or pricing even come into play.
The Three Forms: Lumps, Powder & High-Purity Quartz
Quartz Lumps
Coarsely crushed, sized rock (roughly 5mm to 80mm) used directly in silicon metal and ferrosilicon smelting, glass batch feed, foundry blends and decorative aggregate. Minimal processing beyond crushing and sizing.
Quartz Powder
Ground to 100-500+ mesh for ceramic tile bodies, porcelain, sanitaryware, glazes, paints and construction chemical fillers. The processing step that turns lumps into a fine, reactive powder.
High-Purity Quartz (HPQ)
Intensively purified to 99.9%+ SiO2 with extremely low trace metals, used in solar panel crucibles, semiconductor processing and optical/lighting applications. A distinct processing tier, not just a finer grind.
Understanding High-Purity Quartz (HPQ)
HPQ sits apart from standard industrial silica quartz because the purification target is different in kind, not just degree. Where ceramic or glass-grade material is judged mainly on SiO2 percentage and iron content, HPQ specifications track trace elements — aluminium, titanium, sodium, potassium, lithium and others — down to parts-per-million levels, because these elements interfere with the electrical or optical performance of the final product. Very few global deposits and processors qualify as true HPQ sources, which is why this tier commands a substantially different price and supply base compared to standard industrial or ceramic-grade silica quartz.
Which Form Does Your Industry Need?
| INDUSTRY | TYPICAL FORM | TYPICAL PURITY TARGET |
|---|---|---|
| Silicon Metal / Ferrosilicon | Lumps (40-80mm) | 99%+ SiO2, low Fe/Al/P |
| Glass Manufacturing | Lumps (20-40mm) or Powder | 98.5-99.5% SiO2 |
| Ceramic Tiles / Porcelain / Sanitaryware | Powder (100-300 mesh) | 98.5-99.5% SiO2, low iron for white bodies |
| Paints, Coatings, Construction Chemicals | Powder (200-350 mesh) | 97-99% SiO2 |
| Foundry & Filtration | Lumps (5-20mm) | 98-99.5% SiO2 |
| Solar / Semiconductor / Optical | High-Purity Quartz (HPQ) | 99.9%+ SiO2, ppm-level trace limits |
Destination Ports in Vietnam
Cai Mep-Thi Vai / Cat Lai (Ho Chi Minh City area)
Main gateway for southern Vietnam's industrial belt, with deep-water berths at Cai Mep-Thi Vai supporting large bulk vessels for lump or powder cargo.
Hai Phong Port
Vietnam's principal northern port serving Hanoi-area manufacturers, with expanding capacity at the Lach Huyen terminal.
Da Nang Port
Serves central Vietnam buyers, connected via the East-West Economic Corridor to Laos and Thailand.
Destination Ports in Taiwan
Kaohsiung Port
Taiwan's largest harbor and primary hub for bulk and container cargo, serving southern Taiwan's industrial and electronics manufacturing base.
Taichung Port
Alternative routing for buyers based in central Taiwan.
Keelung Port
Serves northern Taiwan and the Taipei metropolitan area, including proximity to Taiwan's electronics manufacturing clusters.
Indicative FOB Pricing by Form & Grade
| FORM / GRADE | TYPICAL SPECIFICATION | INDICATIVE FOB RANGE (USD/MT) |
|---|---|---|
| Industrial Lumps | 97-99% SiO2, mixed size | $30 - $70 |
| Standard Ceramic Powder | 98.5-99.5% SiO2, 100-300 mesh | $45 - $110 |
| Fine / Low-Iron Powder | 99%+ SiO2, 400-500 mesh | $90 - $140 |
| High-Purity Quartz (HPQ) | 99.9%+ SiO2, ppm trace limits | $400 - $1,500+ |
The pricing gap between standard industrial grades and HPQ is intentional in the table above — it reflects genuinely different processing intensity, not a typo. Freight to Vietnam and Taiwan adds to any of these FOB figures, so buyers typically request CIF or CFR quotes to compare total landed cost.
Packing Options for Export
Bulk Vessel / Loose Loading
Cost-efficient for large-volume lump buyers in smelting and glass batch operations.
1-Ton Jumbo Bags
Standard mid-volume format for both lumps and powder, suited to forklift/crane handling.
25-50 kg Bags
Common for powder buyers and smaller trial orders across ceramics, paints and construction chemicals.
Sealed Drums / Specialty Packing
Used for HPQ and moisture-sensitive high-purity material requiring contamination control during transit.
Frequently Asked Questions
What is silica quartz, and how does it differ from quartz powder or quartz lumps?
Silica quartz is the general mineral category name for crystalline SiO2. Lumps and powder are two processed forms of it — lumps being coarsely crushed rock, powder being finely ground material.
What is high-purity quartz (HPQ)?
Silica quartz purified to 99.9%+ SiO2 with very low trace-element content, used in solar crucibles, semiconductor and optical applications — a distinct processing tier from standard industrial material.
Which forms does Aalok Overseas export?
Both lump form, sized for smelting and glass batch use, and powder form, ground to a range of mesh sizes for ceramics, sanitaryware, glass and filler applications.
Which ports in Vietnam and Taiwan accept shipments?
Vietnam: Cai Mep-Thi Vai/Cat Lai (south), Hai Phong (north), Da Nang (central). Taiwan: Kaohsiung (primary), Taichung (central), Keelung (north).
How does pricing vary between lump, powder and HPQ forms?
Lumps are typically lowest-cost due to minimal processing; standard powder sits mid-range; HPQ commands significantly higher pricing due to the intensive purification required for electronics and solar-grade specification.
Not Sure Which Form or Grade You Need?
Tell us your end application and target purity, and we'll recommend the right form — lump, powder or a custom specification — with pricing and a sample for shipment to Vietnam or Taiwan.
Talk to the Export Teamindianfeldspar.com
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