Melaphyre
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Melaphyre is a volcanic rock similar to basalt in origin and appearance. As liquid lava, it cooled on the surface or near it within the earth’s crust. The rock mainly consists of pyroxenes and plagioclase feldspars. It also contains quartz, olivine and orthoclase. It is a massive rock having a conchoidal fracture, made from minute mineral crystals. As it gets weathered, iron oxides make it red-brown. Fissures contain ferruginous blooms called dendrites that resemble fern leaves.
In comparison to other rock formations in the Western Sudeten Mountains, melaphyre is relatively young. It was formed during the Lower Permian epoch, about 240 million years ago.
Karkonosze granite
Granite is a type of intrusive rock, i.e. rock formed in the deeper parts of the earth’s crust from magma that cooled and... more »
Mica-schist
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Basalt
Basalt is lava cooled at the surface of the earth or in volcanic pipes that existed in the Western Sudeten Mountains 20-30... more »
Melaphyre
Melaphyre is a volcanic rock similar to basalt in origin and appearance. As liquid lava, it cooled on the surface or near it... more »
Amphibolite
This specimen of amphibolite comes from the mine in Ogorzelec (Rudawy Janowickie Mountains). It is over 500 million years old.... more »
Sandstone
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Dolomite marble
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