Aqua-Techniek B.V.
Nijverheidsweg 15a
3225 LL Hellevoetsluis
The Netherlands

Aqua-garco / Coarse garnet, Almandite

Aqua-garco is a naturally occurring mineral with uniform physical, chemical, hardness and microstructure characteristics, which provide the essential pro­per­ties for a wide variety of industrial uses.

Aqua-garco is the compositional variety known as almandite. There are no free elements; all oxides are combined chemically as an iron-rich alumino­silicate, which has the formula: Fe3Al2(SiO4)3. Texturally and compositionally uniform in all sizes. All material mined from the same high-grade deposit.


Inert filter medium

  • as polishing layer (because of it’s high density you can choose finer sizes com­pared to Aqua-sand) wherever extremely high water quality is required,
  • for removal of suspended solids down to 1 µm,
  • for pre-filtration to protect valuable units like Activated Carbon Filters, Ion-exchangers and Reverse Osmosis Membranes,
  • in single-, dual- or triple-layer filter, combined with Aqua-sand or Aqua-cite or Aqua-sand plus Aqua-cite.

Chemical analysis

EN 12910
SiO2mass-%3732 - 42
Al2O3mass-%2115 - 25
FeOmass-%2920 - 40
Fe2O3mass-%40 - 15
TiO2mass-%< 10 - 5
CaOmass-%20 - 5
MgOmass-%60 - 15
MnOmass-%< 10 - 5

Physical characteristics

EN 12910
Bulk densitykg/m322502150 - 2250
Acid solubility insoluble
Shape sub-rounded to sub-angular
Sizes available Standard sizes 0.3 - 0.6 mm and 1.4 - 2.5 mm, other sizes upon request.


  • 25 kg woven plastic bags, palletised covered by plastic foil, 1 mt per pallet.
Keep up to date with Aqua Techniek BV
Follow our social media or subscribe to our newsletter