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Questions related from Ioannis Kamvisis
Dear colleagues Good morning. I have noticed that in the few recent years extreme natural phenomena are more frequent than before (see file attached). Is this assumption correct? Please comment...
15 January 2024 460 9 View
Dear colleagues Good day to you all. One of the most famous debates in Igneous Petrology is the relation between the diamondiferous rocks (i.e. lamprophyres, lamproites, orangeites and...
06 November 2023 778 0 View
12 September 2023 1,711 4 View
Dear colleagues Good day to you all. The old conventional depth of 150km for the diamond stability field has several times been updated to lower values (in particular to 75, 80, 100, 110, 120, 135...
20 June 2023 7,275 2 View
Dear colleagues Good morning. I have found a rock speciment (first photo) within a crater in the Pindus mountains of Greece. Is it a volcanic carbonatite? A photomicrograph of a known carbonatite...
28 April 2023 3,735 12 View
Dear colleagues Good morning. I recently visited a crater and collected a couple of samples from the ring. Could these be geyserites or something else? Best regards Ioannis
16 March 2023 2,943 8 View
DEAR COLLEAGUES I RECENTLY VISITED THE HILL OF THORIKON NEAR LAURION. IT HAS AN IGNEOUS FORMATION ON THE TOP. OLD MAPS CALL IT AN OPHIOLITE. I SEND THREE PHOTOS. WHAT KIND OF ROCK DO YOU THINK IT...
07 March 2023 1,127 6 View
Dear colleagues I was wondering, are there any kimberlite occurrences in Europe (outside of the East European Craton i.e. Baltic and Ukrainian shields)? Could the lack of information on this area...
19 February 2023 3,195 8 View
Dear colleagues I am stydying two circular ponds with a ring (see attached photos). I cannot figure out if they are impact craters or maars. Could anyone help? Best regards Ioannis
03 March 2022 9,865 16 View
Diamond exploration uses certain kimberlitic indicator minerals like G10 garnet (pyrope), magnesiochromite, picroilmenite, Cr-diopside, forsteritic olivine and zircon. Are there any other...
20 October 2021 8,871 17 View
01 January 1970 3,087 2 View
