GST as your Partner
Geological Services
Geophysical Services
Laboratory Services
Quality Services
Geo Database Services
Other Services

Laboratory Services

price list

The GST laboratory is among the leading establishment in the country undertaking chemical, mineralogical, petrological analyses of mineral, soil, rock and water samples. It also provides services on environmental studies and mineral beneficiation tests.

GST Laboratory has developed a Quality Assurance System (QAS), which complies with the ISO/IEC 17025-General Requirements for the Competence of Testing and Calibration Laboratories.

Chemical analyses

Services offered include: sample preparation, fire assay and wet chemistry analysis. The chemical laboratory performs a wide range of determinations, which include:

  • Major elements (SiO2, Al2O3, TiO2, P2O5, CaO, Fe2O3, K2O, MgO, MnO and Na2O.
  • Base metals (Pb, Zn, Ni, Cu).
  • Trace elements (Ag, As, CO, Cr, Cu, MO, Ni, Pb, Zn, Au, Hg).
  • Precious metals (Au, Ag).
  • Water analysis (both clean and waste) for various components such TDS, sulphates, conductivity, salinity, pH, turbidity, colour and cations are analysed in water colour.
  • Pollutant elements (metals) such as: mercury, lead, zinc, cadmium, arsenic and selenium.

Petrological and mineralogical studies

The Mineralogy and petrology laboratory section is equipped with modern facilities for sample preparation, analyzing different minerals, rocks and identification of gemstones. The laboratory offers services on preparation of thin and polished sections, micropetrographic studies and gemological studies.


The laboratory offers services for rock cutting and polishing as per customer demand. The laboratory cuts and polishes specimens for dimension and decoration stones.


                                                          of rock
                                                          samples at the
                                                          lapidary unit
Preparation of rock samples at the lapidary unit

Mineral processing

The minerals processing laboratory incorporates facilities for technology testing in mineral separation using magnetic, electrostatic, gravitational, froth flotation and gold cyanidation techniques. Upgrading tests on industrial minerals are also conducted.

Denver froth flotation cell

Teaching materials

Teaching kits containing rocks and minerals are supplied to schools and other training institutions as teaching materials (see price list) .

Petrophysical measurement

Petrophysical properties of rocks are essential for interpreting geophysical measurements and in assessing geochemical, mineralogy and geophysical constituents of rocks. The Geological Survey of Tanzania (GST) undertakes petrophysical measurements for determining  petrophysical properties of rock and ore samples.

The following petrophysical measurements are undertaken:

  • Magnetic susceptibility of rocks
  • Remanent magnetization
  • Q ratio calculation.
  • Rock density.
  • Rock conductivity.

Petrophysical studies and more