By their origin, rocks are classified as igneous, sedimentary, and metamorphic. Igneous rocks make up about 95% of the lithosphere, whereas the other two types of rock are only 5% of the lithosphere.
Minerals can occur as crystals – as homogeneous, regular geometric solids with some degree of symmetry, which is a reflection of their regular internal composition – the structure.
Loess is a pale yellow to yellowish terrestrial, fine-grained sediment formed by the accumulation of wind-blown particles, hence it is also known as aeolian sediment.
Motifs: pyrite (Brušani, Lika), loess (loess doll from Vukovar)
The souvenir sheet consists of two stamps, and the Croatian Post has also issued a First Day Cover (FDC).
By their origin, rocks are classified as igneous, sedimentary, and metamorphic. Igneous rocks make up about 95% of the lithosphere, whereas the other two types of rock are only 5% of the lithosphere.
Minerals can occur as crystals – as homogeneous, regular geometric solids with some degree of symmetry, which is a reflection of their regular internal composition – the structure.
Without a doubt, one of the most interesting minerals is pyrite – a sulfide mineral with a metallic luster and gold-yellow hue, which at first glance resembles gold.
