golden exfoliated vermiculite

Golden Expanded Vermiculite

Premium golden color expanded vermiculite for horticulture soil amendment, construction insulation, and animal feed. Raw gold vermiculite ore is bulkily supplied at direct factory price!

Golden exfoliated vermiculite is classified into a wide variety of sizes, which includes 20-40mesh, 40-60mesh, 60-80mesh, 80-120mesh, 1-3mm, 2-4mm, 3-6mm, 4-8mm. OEM customization is also accepted.

black gold expanded vermiculite

Crude Golden Vermiculite

Vermiculite is a member of the phyllosilicate group of minerals, resembling mica in appearance. It is found in various parts of the world, vermiculite is basically a hydrated phlogopite mica which has the remarkable ability to expand to many times its original volume when heated at 850 -1100°C.

Crude vermiculite consists of golden and silver vermiculite which are carefully classified into many sizes includes
0.3-1mm1.5-2.5mm 0.5-1.41mm 1-2.8mm 2-4.75mm 3.2-7mm 6-9mm,etc.

Exfoliated Golden Vermiculite

The vermiculite exfoliation process is carried out commercially by passing crude vermiculite through a furnace chamber in a controlled manner. The crude vermiculite then expands at right angles to the cleavage planes, producing concertina-shaped particles many times their original volume.

Exfoliated vermiculite size, including 0.3-1mm, 1-3mm, 1-2mm, 2-4mm, 2-3mm, 3-5mm, 3-6mm, 4-8mm, 6-8mm, etc., and special size can be customized according to your requirements.

Vermiculite Standard Grade

Exfoliated Vermiculite is commercially available in various grain sizes. The most common sizes are 1-3mm, 2-4mm, 3-6mm, and 3-8mm. For mixing your own substrates or growing media, the grain size of 3-6mm is recommended. The grain size 1-3mm (or 2-4mm) can be used as a soil conditioner.

Furthermore, there is vermiculite in very fine grain size (0-1mm). This plays only a minor role in horticulture and is mostly used in the breeding of reptiles as a breeding substrate.

MicafilMedium GradeFine GradeSuperfine GradeMicron Grade
Nominal Size (mm)2 – 151 – 80.5 – 3.00.25 – 1.70.1 – 1.0
Typical Bulk Density (kg/m3)85100100105120
Animal Feed
Animal Feed

Chemical Composition

Vermiculite belongs to the hydrous aluminum silicate minerals which have complex chemical composition. Due to its uncertainty, expressed in a single chemical formula is difficult. In general, the chemical formula of vermiculite is (Mg, Ca) 0.7 (Mg, Fe 3 +, Al) 6.0 (Al, Si) 8.0 O20. Usually, the SiO2 is 37~42%, Al2O3 is 9~17%, Fe2O3 is 5~18%, MgO is 11~23%, H2O is 5~11%, the content of Ca, Na, and K is uncertain. But due to the hydration degree is different, have different oxidation, even with vermiculite, its chemical composition is not the same.

Golden vermiculite43.7515.5515.81.328.981.675.19
Silver-white vermiculite37.5611.855.151.5122.441.056.39

Packaging & Delivery

To better ensure the safety of your goods, professional, environmentally friendly, convenient, and efficient packaging services will be provided.

  • Package details: 50L, 80L, 100L, 100L PP bags, or PE bags packed in ton bag/carton/pallet, or you can customize the package according to your requirement.
  • Delivery time: Within 7 days after receiving your deposit, the lead time could be associated with the quantity.
  • Usual MOQ: One 40HQ container. If you need a small amount, we can send you by air or by LCL without MOQ limitation.
  • Port: Tianjin port.

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