calcite Archives

Raman images showing the distribution of OM (red) and titanite (Ttn, purple) inside spheroids immediately adjacent to apatite (Ap, turquoise) and lepidocrocite (Lpc, white) embedded in the basaltic glass fragment composed of chlorite (Chl, blue). Note the surrounding matrix of calcite (Cal, green) does not contain apatite, the presence of microscopic size apatite and of nanoscopic size apatite crystals, and the location of the two regions of interest (ROI) for each. -- Nature Communications Earth & Environment

Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Fossils & Paleontology, Imaging & Spectroscopy, Microbiology & Virology, Nanotechnology & SynBio, Status Report

Ichnofossils in Volcanic Glass From Palaeoproterozoic Hydrothermal Vents Were Burrowed By Microorganisms Probably Seeking Phosphate

by Keith CowingApril 6, 2026April 6, 2026

Ichnofossils in basaltic glass are putative microscopic trace fossils occurring on modern seafloor and throughout Earth history. While their biological origin remains debated, it is unknown why microorganisms thrive in […]

Different types of coastal microbial mats were documented: Lift-off mats from Sisal (B), Pustular (C) and flat (D) microbial mats from Progreso, and flat mats from Ría Lagartos (E). -- PLoSONE via PubMed

Biosignatures & Paleobiology, Fossils & Paleontology, Habitable Zones, Microbiology & Virology, Origin & Evolution of Life, ROVs/Submersibles/Diving, Sample Return, Status Report, Water/Hycean Worlds & Oceanography

Microbial Diversity Of Coastal Microbial Mats Formations In Karstic Habitats From The Yucatan Peninsula, Mexico

by Keith CowingJune 10, 2025June 10, 2025

In this study, we report for the first time an exploration of the physicochemical characteristics and the prokaryotic diversity of three different types of microbial mats from karstic habitats located […]

calcite

Ichnofossils in Volcanic Glass From Palaeoproterozoic Hydrothermal Vents Were Burrowed By Microorganisms Probably Seeking Phosphate

Microbial Diversity Of Coastal Microbial Mats Formations In Karstic Habitats From The Yucatan Peninsula, Mexico

ALMA Central Molecular Zone Exploration Survey (ACES) I: Overview

RNA And Proteins Joined Up At The Origins Of Life: Persistence Is The Point

Selection For Growth Drives The Emergence Of Genetic Heredity In Protocells

NASA SMD ROSES-25 Amendment 65: New Opportunity: C.4 Planetary Science Enabling Facilities

TESS Photometry and Radial Velocity Analysis of the sub-Neptune Exoplanet π Mensae c and the Wider π Mensae Planetary System