Martin Monik

2 Questions 7 Answers 0 Followers

Questions related from Martin Monik

Are the grey/white bands composed of magnetite and haematite or are there more iron oxdies/suplfides?

This is a Fe-concretion (about 2 cm in diameter) of possible sedimentary origin (Carpathian Flysch; reflected light microscopy). I suppose the dark grains are could be quartz, subsequently...

23 May 2024 7,937 2 View

Any idea of what the tubular fossils in the pictures might be?

The material is probably Cretaceous chert (or jasper? - in the picture on the right there are probably intrusions of agate) from the contact with submarine volcanic rocks from the Flysch Zone of...

30 May 2017 5,571 12 View