Malach Posted October 30, 2022 Share Posted October 30, 2022 I found more of this rock, found at Anyer beach, Indonesia Link to comment Share on other sites More sharing options...
FranzBernhard Posted October 30, 2022 Share Posted October 30, 2022 Banded jasper? Botryoidal chalcedony? Are there any volcanic rocks nearby? Franz Bernhard Link to comment Share on other sites More sharing options...
Malach Posted October 30, 2022 Author Share Posted October 30, 2022 (edited) 32 minutes ago, FranzBernhard said: Banded jasper? Botryoidal chalcedony? Are there any volcanic rocks nearby? Franz Bernhard Yeah tons of volcanic rock from the explosion of Krakatau mountain. Maybe this is one of the volcanic rocks? Edited October 30, 2022 by Malach Link to comment Share on other sites More sharing options...
FranzBernhard Posted October 30, 2022 Share Posted October 30, 2022 Could be (with some pebbles adhering to it). Please break one open. Franz Bernhard Link to comment Share on other sites More sharing options...
Malach Posted October 30, 2022 Author Share Posted October 30, 2022 8 minutes ago, FranzBernhard said: Could be (with some pebbles adhering to it). Please break one open. Franz Bernhard I didn't bring one with me and I'm no longer at the beach now, perhaps this picture might help a bit Link to comment Share on other sites More sharing options...
FranzBernhard Posted October 30, 2022 Share Posted October 30, 2022 Looks like mostly limestone with some bioerosion (bright ones) - the dark ones? Sorry, out of reach . Franz Bernhard Link to comment Share on other sites More sharing options...
hemipristis Posted October 30, 2022 Share Posted October 30, 2022 6 hours ago, Malach said: I found more of this rock, found at Anyer beach, Indonesia The bottom photo resembles blue encrusting algae 1 'Those who cannot remember the past are condemned to repeat it.' George Santayana Link to comment Share on other sites More sharing options...
Malach Posted October 30, 2022 Author Share Posted October 30, 2022 41 minutes ago, hemipristis said: The bottom photo resembles blue encrusting algae thanks for the information! Link to comment Share on other sites More sharing options...
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