S SterlingportGlobal Ltd · UK
Minerals

Two minerals. One standard.

A narrow product line by design. Every shipment is graded, lab-verified and shipped against an enforceable specification. Other minerals (kaolin, feldspar, tourmaline, lithium, base metals) are available on enquiry where our supplier network can deliver to spec.

Raw silica quartz chunk in hand 01 · Silica Quartz · 99.99% SiO₂
01 · Silica Quartz

Crystalline (vein) quartz, across the purity spectrum.

Lumps for fused-silica and refractory; chips for ceramics; sand and grit for glass, photovoltaic and semiconductor applications. We run two flow configurations to match buyer specification.

Purity
99.99% / 99.96% SiO₂
Lumps
50–200 mm
Chips
1–10 mm
Sand / grit
< 0.3 mm · 0.3–1 mm · 1–6 mm
Varieties
Transparent · semi-transparent · milky
Capacity
1,000 MT / month own-source
Packaging
Jumbo bags · 50 kg bags · bulk on request
Documentation
COA on request · PSI on contract
Grade A

Construction / glass grade

High-throughput flow for general industrial use. Crushing + washing + screening + basic magnetic separation.

Applications · container glass, flat glass, foundry sand, engineered stone, refractory.
Grade A+

High-purity / tech grade

Multiple grinding & magnetic stages · flotation for feldspar removal · acid leaching for ppm-level impurities.

Applications · photovoltaic / solar wafers, semiconductor, fused-silica, optical glass.
Product range

Seven product lines, one upstream.

The full output the mineral processing line can produce, from raw lumps to fused-silica and solar chips. Available against firm specification and qualifying volume.
Line Product Size Use
01Quartz Lumps10–150 mmRefractory · fused-silica feedstock
02aSilica Quartz Sand0.3–0.7 · 0.7–1.0 · 1.0–2.5 mmContainer & flat glass · foundry · engineered stone
02bSilica Quartz Grit2.5–4.0 · 4.0–6.0 mmFiltration · industrial & specialty
03Ornamental StoneCut to specificationArchitectural & decorative
04Engineering MarbleSlabs · engineeredQuartz-based engineered surface
05Silica EMC PowderFine-milledElectronic moulding compound
06Fused SilicaTech-grade lumps / chipsHigh-purity industrial & PV
07Solar ChipsWafer-gradePhotovoltaic feedstock

Lines 05–07 require qualifying volume & firm specification · contact for trial allocation

From the rock face

Origin verified. Specification first.

Open-cast bench mining at the family-held quartz operation. Mechanised extraction, graded at source, stockpiled under cover, sampled before screening.
White silica quartz heap from the active operation
Raw extraction · awaiting grading
CAT excavator extracting silica quartz
CAT 320 · open-cast bench mining
Silica quartz stockpile
Stockpile · ready for screening
Mining extraction at the family quartz site
Quarry wall · pre-screen face
Multi-level operational quarry
Operational pit · multi-bench
02 · Mica

Sheet, flake and processed mica. Nigeria origin.

Honey mica powder, white mica flakes, sheet mica and processed grades. Sourced direct from Nigerian operators and graded for export to insulation, coatings, paint, rubber and specialty industrial buyers.

Forms
Sheet · flake · processed powder
Origin
Nigeria · graded
Grades
Honey mica · white mica
Mesh
40 mesh standard · on spec
Use
Insulation · coatings · paint & rubber
Capacity
On enquiry
Documentation
Export certified
Nigeria honey mica powder, 40 mesh sample on branded scale 02 · Mica · Nigeria origin
Mica gallery

Honey & white grades, documented.

Recent samples from the Nigerian operators we source from. Spec sheets and lab data available on enquiry.

Translucent sheet mica flakes in hand
Sheet mica · translucent
White mica flakes cluster
White mica · flakes
White mica powder sample
White mica · powder
Honey mica powder on scale, 40 mesh
Honey mica · 40 mesh
Tray of honey mica powder, packed for sample
Sample tray · packed
Honey mica powder hero shot, 40 mesh, 100 ml container
Honey mica · 40 mesh · 100 ml
Exporting from origin

From factory floor to port.

Jumbo-bag packing at the Sri Lankan factory, container loading, sealed and document-ready. Cargo leaves with COA, BL and any agreed PSI. It clears the same way it left.
Forklift loading labelled jumbo bags into a shipping container at the Sri Lankan factory
Forklift loading · jumbo bags · factory floor
Container interior with stacked jumbo bags, strapped and ready for sealing
Sealed for Korea · Japan · China · KSA · Gulf
Sterlingport team on a Saudi Arabian silica quartz exploration site
Saudi Arabia coming online

Saudi Arabia exploration underway.

Exploration is underway on the Kingdom's silica quartz deposits with our Saudi partners. A mechanised quartz quarry and processing factory are in scope. The first-shipment timeline is being worked through with buyers asking for early allocation.

Stage
Site exploration · partner-led
Origin
Kingdom of Saudi Arabia
Mineral
Vein (crystalline) silica quartz
Buyer access
Early-allocation enquiries welcome
Beyond our line

Other minerals, on enquiry.

Where our supplier network can deliver against your specification and INCOTERMS, we also broker the following on a project basis. Volumes and timelines on enquiry.
Industrial
Kaolin · Feldspar
Ceramics, paper, paint, glass. Bulk and processed grades.
Specialty
Tourmaline · Agate
Gem-grade and industrial ornamental.
Battery materials
Lithium ore
Mine-gate spodumene / lepidolite material for refiners.
Base & specialty
Cu · Zn · Pb · Be · Monazite
Copper, zinc, lead concentrates and rare-earth-bearing material.
Processing flow

How a cargo gets to spec.

The standard sequence for high-purity silica quartz. Construction-grade flows stop earlier in the chain; tech-grade flows take it all the way.
  1. 01
    Crushing
    Jaw and cone, to controlled size
  2. 02
    Washing
    Log washer · attrition
  3. 03
    Screening
    Sand / grit / lump classification
  4. 04
    Magnetic
    Iron & heavy impurity removal
  5. 05
    Flotation · Acid
    Tech-grade only · ppm-level cleaning
Standards

Every shipment, fully papered.

The documentation set we ship as standard. Anything extra a buyer requires, we accommodate.

Document 01
Certificate of Analysis
Third-party laboratory results: SiO₂%, trace elements, particle size.
Document 02
Pre-Shipment Inspection
Independent PSI report where contractually specified, at load port.
Document 03
INCOTERMS & LC
FOB / CIF / CFR specified up front. Letter of Credit accepted.
Document 04
Trial Cargo Protocol
First-cargo trial volume offered to qualified buyers, on agreed terms.
Enquire

Let's discuss your requirement.

Send us specification, monthly volume and port of discharge. We come back with origin, grade and INCOTERMS, usually within one working day.

Open the contact page → Email Mr. Kamil →