sapropel |
lamalginite |
As nouns the difference between sapropel and lamalginite
is that
sapropel is (geology) an aquatic sludge-like sediment rich in organic matter formed in oxygen-free areas at the bottom of lakes, seas etc while
lamalginite is an alginite found in sapropel and composed of thin-walled colonial or unicellular algae that occur as distinct laminae, cryptically interbedded with mineral matter.