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Mineral resources of Poland> Rock raw materials and others> Phyllite, quartz and micaceous schists
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Phyllite, quartzitic and micaceous schists

General information

Metamorphic schists (phyllite, quartzitic and micaceous) are used in the building construction as the major component of a fine gravel cover of roll tar paper (phyllite and micaceous schists), in an agriculture as inert dust carrier of pesticides (phyllite and micaceous schists), and in the manufacture of fire-proof materials as one of the major components of a fire-proof cement (quartzitic schists).

Phyllite schists

Phyllite schists have been documented in 3 deposits in Opolskie Voivodeship (map): Chomiąża, Dewon-Pokrzywna and Dewon-Pokrzywna 2. The total anticipated economic resources of phyllite schists amounted to 15,415.41 thousand tonnes as of 31.12.2022. Similarly to the previous years, the exploitation in 2022 was carried out only from the Dewon-Pokrzywna deposit – it was equal 159.11 thousand tonnes and decreased by 24.39 thousand tonnes in comparison with 2021 (it means the drop was equal 13.29%). The anticipated economic resources of this deposit decreased – due to the exploitation, losses and the better deposit exploration – by 309.06 thousand tonnes (2.35%) and amounted to 12,842.37 thousand tonnes. Two other deposits of phyllite schists have not been exploited.

Figure below shows changes in domestic resources and production of phyllite schists in Poland in the years 1989-2022.

Quartzitic schists

Quartzitic schists occur within the Strzelin granite massif in Dolnośląskie Voivodeship. The only 1 documented and exploited deposit of this raw material in Poland is the Jegłowa deposit. Therefore, it should be particularly protected. Its anticipated resources (excluding protective pillars) in 2022 were equal 8,654.24 thousand tonnes and economic resources 2,723.28 thousand tonnes. The deposit was not exploited in 2022.

Figure below shows changes in domestic resources and production of quartzitic schists in Poland in the years 1989-2022.

In the latest edition of The balance of prospective mineral resources of Poland, there was the assessment of resources prospective for quartzite and quartzitic schists in Poland updated*. The main criteria adopted for establishing the quartzite and quartzitic schists deposits were: the deposit thickness (minimum of 5 m), the overburden thickness to the deposit thickness ratio (maximum 0.5), the SiO2 content (minimum of 95%), the Fe2O3+TiO2+alkali content (maximum of 1%). As the result of such attitude, the prospective resources of quartzitic schists were assessed to be equal 8.49 million tonnes within 1 area which is strictly connected to the already documented Jegłowa deposit (the so-called layers from Jegłowa). To the prospective resources there were also the deeper parts of the Jegłowa deposit included, together with the minor area of the schists outcrop west of the Jegłowa deposit.

Micaceous schists

Micaceous schists have been documented in 2 deposits located in Dolnośląskie Voivodeship: Jawornica deposit in Kłodzko County and Orłowice deposit in Lubań and Lwówek Śląski Counties (map). The total anticipated economic resources of the raw material as of 31.12.2022 were determined at 6,603.44 thousand tonnes and economic resources at 2,990.05 thousand tonnes. The resources of the Orłowice deposit account for 85.55% of the total anticipated economic resources and 82.78% of the total economic resources of the given raw material. The exploitation was carried out only from the Jawornica deposit (0.50 thousand tonnes). As a result of the output and exploitation losses, both the anticipated economic resources and economic resources of the raw material decreased in comparison with 2021 by 0.50 thousand tonnes each.

Figure below shows changes in domestic resources and production of micaceous schists in Poland in the years 1989-2022.


Prepared by: Marcin Tymiński

* Brzeziński D., Galos K., 2020 - "Kwarcyty, piaskowce kwarcytowe i łupki ogniotrwałe (quartzite, quartzitic sandstone and quartzitic schist)". In: "Bilans perspektywicznych zasobów kopalin Polski wg stanu na 31.12.2018 r." (eds. Szamałek K., Szuflicki M., Mizerski W.): 305-308. PIG-PIB, Warszawa [in Polish].