+1 (849) 635-1701

+1 (849) 635-1701

+1 (849) 635-1701

Responsible Mining
Purity and Quality
Siliceous Sand

Geoterra Dominicana

We are an industrial company with more than 10 years in the industrial sand market. We have sand that is perfect for use in golf courses, sandblasting, aqueduct cleaning (sandblasting), glass manufacturing, construction and as a material in filters of all types. We developed the only silica mine that can be found in the Caribbean, and over the years we have managed to maintain a competitive price and a high quality product.

We are the only Silica Sands, Quartz and Industrial Clays mine in the Caribbean.

Years in the Market


Annual Production


Service Area




Majagua Brown Clay

The Majagua Brown Clay operated by Geoterra Dominicana contains a higher percentage of Silica Dioxide than French Green Clay. Also, our Brown Clay contains a lower percentage of Calcium which makes it a suitable Silica Sand for Golf Courses.

  • Silica Dioxide 50.06% 50.06%
  • Aluminum Oxide 30.85% 30.85%
  • Iron Oxide 3.02% 3.02%
  • Calcium Oxide 0.28% 0.28%
  • Magnesium Oxide 0.58% 0.58%
  • Manganese Oxide 0.10% 0.10%
  • Sodium Oxide 1.18% 1.18%
  • Potassium Oxide 3.66% 3.66%

Analysis of sand

Sand Analysis by West Pharmaceutical Services in Perrysburg, Ohio Using the WDXRFmethod of analysis.

  • SiO2 86.8% 86.8%
  • Al2O3 6.6% 6.6%
  • Fe₂O₂O₃. 1.5% 1.5%
  • Cr2O3 0.006% 0.006%
  • TiO2 0.09% 0.09%
  • CaO 0.6% 0.6%
  • MgO 0.5% 0.5%
  • Na₂O 1.3% 1.3%
  • K₂O 1.8% 1.8%
  • LOI @ 1000° 0.86% 0.86%

Sale of Silica Sands for different Industries

We offer silica sand in a wide range of granulometries, dry and wet silica sand, in bags and customized for different industries.

Construction Industry

Glass and Ceramics Industry

Metallurgical and Foundry Industry

Frequently Asked Questions
about Silica Sand

What is silica sand?

Silica sand has to meet several criteria in order to claim the title that your product is silica sand. Silica sand must have a silica content of 95 % silica (SiO2) or higher with an iron oxide (Fe3O2) concentration of less than 0.6 %. If these criteria are not met, the sand is known as “regular” sand. Geoterra Dominicana provides a sand that meets all these criteria allowing its product to be used in a wide range of industrial applications. .

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What are the applications of silica sand?

There are numerous applications for which our sand can be used. The high quality of our sand is well used in golf courses and other sports fields, glass manufacturing, filtration and in the production of industrial and healing clays. These industries are large consumers because of the way they use this product. And for these applications, Geoterra Dominicana’s Si02 sand is an infinitely pure and effective combination.

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What are the benefits of silica clay?

It has a myriad of health properties: detoxifying, anti-inflammatory, decongestant, depurative, refreshing, soothing, antibiotic, healing, moisturizing, immunostimulant, disinfectant, toning, regulating multiple functions of the body and more.

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We are the responsible and quality choice

For all your silica sand needs, Geoterra Dominicana has high quality sand to meet the needs of any industry.


+1 (849) 635-1701
Duarte Highway No.41 Santo Domingo

Geoterra Dominicana SRL. All rights reserved.

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