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

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

The two deposits of phyllite schists from the Opole Voivodeship are the only deposits of that raw material hitherto proven in Poland (map). Exploitation of the Chomiąża was phased out in 1989, leaving relatively small part of its economic resources (about 310 thousand tonnes). In 2001, production was recommenced at other deposit, the Dewon - Pokrzywna deposit at Jarnołtówek near Głuchołazy. In 2010 there was new deposit documented - Dewon - Pokrzywna 2. Anticipated economic resources of phyllite schists in Poland were estimated in 2011 at about 18.08 million tonnes and production (from Dewon-Pokrzywna deposit) 157 thousand tonnes. Production increased by 100 thousand tonnes in comparison with 2010.

Quartzitic schists occur only within the Strzelin granite massif at Jegłowa in the Lower Silesian region. The Jegłowa deposit is still the only deposit of that raw material which has been proven in Poland. Its anticipated resources were estimated in 2011 at about 5.93 million tonnes and economic resources at 3.78 thousand tonnes. Production of quartzitic schists in 2011 was equal 40 thousand tonnes (increased by 38 thousand tonnes). The Jedłowa deposit is widely known for occurrences of beautiful quartz crystals, especially clear and colorless rock crystals.

Micaceous schists occur in the Orłowice deposit located near Lwówek Śląski and in the Jawornica deposit in the Kłodzko area. Total anticipated economic resources of that mineral raw material as of 31.12.2011 were estimated at 6.67 million tonnes, and economic resources at 4.41 million tonnes. In 2011, production of these schists from Orłowice deposit increased to 4.79 thousand tonnes and from Jawornica deposit decreased to 0.52 thousand tonnes (schists from this deposit are used as crushed stones).

Prepared by: Janina Dyląg