Based on the metasomatic (thermodynamic) zonation of the groundwater contamination plume identified in my study, I prepared a schematic impact map.

Unlike conventional chloride concentration isolines (which are often weakly informative), this approach reflects the thermodynamic state of the aquifer. The map clearly shows that the aggressive corrosion-by-mixing zone (Subzone III) occupies a large area and, in several places, extends beyond the existing monitoring well network.

This indicates that the current monitoring system is insufficient to delineate the full zone of influence of the mine water impoundment.

The criteria for defining metasomatic subzones and the associated risks are described in detail in the current published version of my monograph:
https://zenodo.org/records/16741148

#PHREEQC #RStats #QGIS #Geochemistry #Groundwater #Contamination #Hydrogeology #EnvironmentalGeochemistry #SvystunovaGully

Leaching Of Legacy Paper Mill Sludge Induces Lithification By Cementation Of Fluvial Sediment
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https://doi.org/10.1016/j.ancene.2025.100523 <-- shared paper
--
[For almost 300 years – from 1709 to 2004 – Penicuik and district was producing high-quality paper which went out all over the world; Walter Scott’s Waverley novels and Robert Louis Stevenson’s notebooks were printed on Penicuik paper, and Turner painted on it too.]
#Legacy #Papermill #Penicuik #Midlothian #scotland #Sludge #Anthropogenic #lithification #Conglomerate #Cementation #geology #water #hydrology #fluvial #sediment #calcium #leacging #river #stream #waterways #streambed #calciumcarbonate #CaCO3 #SEM #EDX #sampling #XRD #waste #wastemanagement #industrial #industry #industrialwaste #pollution #sedimentology #geochemistry #papermillsludge #PMS

Minetosh souhaite à tous les membres du #Fediverse une bonne année !
Et pour la nouvelle année, il y a du nouveau sur Minetosh online (https://www.minetoshsoft.com):
AmphiCalc-1 pour le calcul et la classification automatiques des amphiboles. En raison de la complexité des amphiboles, AmphiCalc-1 fournira plusieurs routines de calcul. La première, « Amp13RM », qui calcule les compositions des amphiboles à partir de 13 cations (à l'exclusion de Na, K, Mn et Ca), est désormais disponible. Amp13RM calcule automatiquement les oxydes, les cations, la formule brute, les distributions de Fe²⁺ et Fe³⁺, ainsi que d'autres paramètres des amphiboles à partir d'analyses par microsonde électronique. Les diagrammes suivants, utiles à la classification des amphiboles, sont générés automatiquement : diagramme de fuite, diagramme ACF et diagramme AFM.

#Minetosh #geologie #geology #géologie #amphibol #amphibole #LeakeDiagramm, #AcfDiagramm, #AfmDiagramm #LeakeDiagram, #AcfDiagram, #AfmDiagram #LeakeDiagramme, #AcfDiagramme, #AfmDiagramme #leakediagram, #acfdiagram, #afmdiagram #geochemie #geochemistry #géochimie #mineralogie #mineralogy

Minetosh wishes everyone in the #Fediverse a happy new year!
And for the new year, there's something new on Minetosh online.(https://www.minetoshsoft.com):
AmphiCalc-1 for the automatic calculation and classification of amphiboles. Due to the complexity of amphiboles, AmphiCalc-1 will provide several calculation routines. The first part, "Amp13RM" – amphibole compositions based on 13 cations excluding Na, K, Mn, and Ca – is now online. Amp13RM automatically calculates the oxides, cations, formula composition, Fe²⁺ and Fe³⁺ distributions, and other parameters of amphiboles from microprobe analyses. The following diagrams for classifying amphiboles are automatically generated: Leake diagram, ACF diagram, and AFM diagram.

#Minetosh #geologie #geology #géologie #amphibol #amphibole #LeakeDiagramm, #AcfDiagramm, #AfmDiagramm #LeakeDiagram, #AcfDiagram, #AfmDiagram #LeakeDiagramme, #AcfDiagramme, #AfmDiagramme #leakediagram, #acfdiagram, #afmdiagram #geochemie #geochemistry #géochimie #mineralogie #mineralogy

Minetosh wünscht allen im #Fediverse ein frohes neues Jahr!
Und zum neuen Jahr gibt es etwas Neues auf Minetosh online (https://www.minetoshsoft.com):
AmphiCalc-1 zur automatischen Berechnung und Klassifizierung von Amphibolen. Aufgrund der Komplexität der Amphibole wird AmphiCalc-1 mehrere Rechenroutinen zur Verfügung stellen. Der erste Teil "Amp13RM" – Amphibol-Zusammensetzungen auf der Grundlage von 13 Kationen ohne Na, K, Mn und Ca – ist nun online. Amp13RM berechnet aus Mikrosondenanalysen automatisch die Oxide, die Kationen, die Formelbesetzung, die Fe²⁺- und Fe³⁺-Verteilung, sowie weitere Parameter von Amphibolen. Folgende Diagramme zur Klassifizierung der Amphibole werden automatisch erstellt: Leake-Diagramm, ACF-Diagramm, AFM-Diagramm.

#Minetosh #geologie #geology #géologie #amphibol #amphibole #LeakeDiagramm, #AcfDiagramm, #AfmDiagramm #LeakeDiagram, #AcfDiagram, #AfmDiagram #LeakeDiagramme, #AcfDiagramme, #AfmDiagramme #leakediagram, #acfdiagram, #afmdiagram #geochemie #geochemistry #géochimie #mineralogie #mineralogy

Carbonated Ultramafic Igneous Rocks In Jezero Crater, Mars [NASA's Perseverance Rover]
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https://doi.org/10.1126/science.adu8264 <-- shared paper
--
#Perseverance #rover #JezeroCrater #Mars #geology #exploration #extraterrestrial #hydrography #water #hydrology #hydrospatial #magmatic #rocks #life #carbonate #Martian #geochemistry #sampling #sediment #lacustrine #fan #fluvial #Aqueous
#UKSpaceAgency | #NASA

Whiting event (Geology ⛰️)

A whiting event is a phenomenon that occurs when a suspended cloud of fine-grained calcium carbonate precipitates in water bodies, typically during summer months, as a result of photosynthetic microbiological activity or sediment disturbance. The phenomenon gets its name from the white, chalky color it imbues to the water. These events have been shown to...

https://en.wikipedia.org/wiki/Whiting_event

#WhitingEvent #Water #Geology #Phenomena #Geobiology #Geochemistry

4/
Designed for researchers, scholars, and advanced students in environmental science, geochemistry, and systems ecology, this work provides a robust conceptual and analytical framework. It is an essential reference for those seeking to understand the material basis of life and the complex interdependencies that define our planet’s future.

#books
#nonfiction
#EnvironmentalScience
#geochemistry
#SystemsEcology
#Springer

The “Hydrochemical Gap”: why manual saturation indices don’t work
Many Kryvbas studies still estimate calcite saturation as if high-salinity waters behaved like distilled water.
This plot shows the opposite.

🔵 Blue line: textbook Ksp for calcite.
🔴 Red points: actual ion activity product (IAP) for real samples (PHREEQC).

Key facts:

1️⃣ At 30–40 g/L salinity, real IAP is 1.5–1.6 log units lower — meaning free Ca²⁺ activity is ~38× lower than concentration-based formulas predict.

2️⃣ The dip at 2–5 g/L marks the mixing zone, where ionic strength and ion-pairing change non-linearly and break simple calculations.

3️⃣ Main reason:
• high ionic strength suppresses activity,
• Ca²⁺ forms complexes,
• multicomponent interactions are non-linear.

Result:
Manual SI calculations suggest “precipitation,” but real activity shows undersaturation and aggressive water.
Only thermodynamic modelling reveals the true behaviour.

#Hydrogeochemistry #Geochemistry #Mining #PHREEQC #RStats #SvystunovaGully #Kryvbas #SvystunovaGully

Scientists discover a new state of matter at Earth's center, name it Happy Fun Ball

https://www.sciencedaily.com/releases/2025/12/251209043053.htm?utm_source=fark&utm_medium=website&utm_content=link&ICID=ref_fark

#stem #Science #geochemistry #cool #earth

🧪 The “Oversaturation Illusion” in Kryvbas Mine Waters

While modeling Kryvbas water chemistry (R + PHREEQC), I found a fundamental issue in how saturation is often evaluated.

We usually calculate calcite equilibrium from ion concentrations — fine for fresh water.
But Kryvbas mine waters are brines, where ionic strength and complexation dominate.

📉 Results from ~1000 samples (minteq.v4):
- Once salinity exceeds ~3 g/L, Ca²⁺ activity drops sharply.
- At 15–20 g/L, calcium activity coefficient is ≈ 0.35.

Meaning: more than half of the “calcium concentration” is inert — a dead load that cannot form precipitates.

This explains why traditional methods predicted oversaturation where the water was actually aggressive and dissolving rocks.

Modeling: PHREEQC + minteq.v4 (US EPA), Davis equation.

#Hydrogeochemistry #WaterChemistry #PHREEQC #Geochemistry #Groundwater
#Mining #Tailings #IonActivity #Thermodynamics #Kryvbas #OpenScience #RStats #SvystunovaGully

#SvystunovaGully
888 downloads!
Looks like I’ve created something that people actually find interesting.

But here’s the real question: with a daily rate of 30–40 downloads... what are the odds of catching such a perfectly round number by accident? 🤣

(Maybe the Universe has a soft spot for hydrogeochemistry!) 😁

#OpenScience #Zenodo #Geochemistry #Hydrogeology #MineWater #DataScience #ResearchLife #ScienceHumor #Groundwater #EnvironmentalScience #Contamination #PHREEQC #RStats #LaTeX #QGIS #FOSS #WaterPollution

🎉 A small milestone for my hydrogeochemistry monograph about #SvystunovaGully

Today, my Zenodo record passed 1,500 downloads across both released versions — something I never expected when I began this project as a personal, curiosity-driven exploration.

It’s an independent study on groundwater–rock interaction, technogenic metasomatism, and carbonate–water equilibria, based largely on PHREEQC thermodynamic modelling and geospatial data.

I’m grateful to everyone who took an interest, skimmed, downloaded, or shared it.
Your attention gives this work a life I didn’t imagine it would ever have.

❗ And one more thing: in the monograph’s preamble I explicitly thank the developers of free and open-source software. Without their tools — R, PHREEQC, QGIS, LaTeX, Linux, JabRef and many others — this research would simply not have been possible.

#Hydrogeochemistry #Geochemistry #Groundwater #PHREEQC #FOSS #OpenScience #RStats #QGIS #Zenodo #EnvironmentalScience #Carbonates #Metasomatism #GeoData #WaterPollution

Chemical cycling (Planetary science 🪐)

Chemical cycling describes systems of repeated circulation of chemicals between other compounds, states and materials, and back to their original state, that occurs in space, and on many objects in space including the Earth. Active chemical cycling is known to occur in stars, many planets and natural satellites. Chemical cycling plays a...

https://en.wikipedia.org/wiki/Chemical_cycling

#ChemicalCycling #Geochemistry #PlanetaryScience #BiogeochemicalCycle

Why Is The Federal Government Spending Millions On Aerial Geological Mapping In Southern Colorado?
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https://www.cpr.org/2025/11/19/geological-survey-earth-mri-colorado-minerals/ <-- shared media article
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https://www.usgs.gov/earth-mapping-resources-initiative-earth-mri <-- shared (USGS) Earth Mapping Resources Initiative (Earth MRI) entry page
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https://ngmdb.usgs.gov/emri/#3/40/-96 <-- shared Earth MRI web map(s)
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https://www.usgs.gov/centers/gggsc <-- shared USGS Geology, Geophysics, and Geochemistry Science Center entry page
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https://mrdata.usgs.gov/earthmri/data-acquisition/project.php?f=html&pid=1071 <-- shared USGS Colorado Alkaline Igneous Belt Survey report
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https://www.usgs.gov/programs/mineral-resources-program/science/what-are-critical-minerals-0 <-- shared final 2025 #DOI / #USGS report on list of critical minerals
--
#geophysics #remotesensing #earthobservation #airborne #mapping #spatial #criticalminerals #colorado #geology #structuralgeology #Colorado #USA #EarthMRI #SouthernColorado #geologicdata #geologicmapping #geochemistry #igneous #survey #geophysicalsurvey #economic #economy #mineral #mineralresources
@CPR @USGS @NV5

Life on earth should evolve to prefer breathing oxygen for metabolism. Should

https://www.seti.org/news/this-microbe-breathes-two-ways-the-bacteria-that-challenge-biochemistry/?utm_source=fark&utm_medium=website&utm_content=link&ICID=ref_fark

#stem #science #geochemistry #interesting

Fluid inclusion (Petrology 💎)

A fluid inclusion is a bubble of liquid and/or gas that is trapped within a crystal. As minerals often form from a liquid or aqueous medium, tiny bubbles of that liquid can become trapped within the crystal, or along healed crystal fractures. These inclusions usually range in size from 0.01 mm to 1 mm and are only visible in detail by microscopic study, however s...

https://en.wikipedia.org/wiki/Fluid_inclusion

#FluidInclusion #Petrology #Mineralogy #Geochemistry

In my study of the highly mineralized mine-water storage impoundment in #SvystunovaGully , I used PHREEQC to quantify the equilibrium dissolution potential of calcite for every of >1000 groundwater sample collected over more than 10 years.

For each sample, I modeled how much calcite the water could dissolve if it encountered carbonate rocks along its flow path (SI = 0 at equilibrium). Each sample was treated as an independent thermodynamic system, and the resulting dissolution values were aggregated spatially using Voronoi polygons.

The map below shows the median Δmass of calcite (g/L) for each polygon.
Areas with more negative values represent water that remains capable of dissolving additional carbonate minerals — a long-term indicator of the water’s aggressiveness.

This approach highlights the zones where the aquifer is most vulnerable to carbonate dissolution around the mine-water pond.

#Hydrogeology #Geochemistry #PHREEQC #Groundwater #MineWater #GIS #RStats #Hydrochemistry #OpenScience #Ukraine

New study reveals multi-source, mixed-origin natural gas in the SW Tarim Basin. Using molecular & isotope data, researchers decode gas genetics and improve frontier exploration models. #openaccess at https://www.sciencedirect.com/science/article/pii/S2352854025000658
#NaturalGas #Geochemistry #Basin #PetroleumGeoscience

In my research on the impoundment for highly mineralized mine water, I identified two distinct zones of carbonate mineral dissolution within the underlying carbonate aquifer.

The inner zone is caused by the primary aggressiveness of the mine water toward carbonates.

The outer zone appears after the leaking water has almost reached equilibrium with carbonate minerals — and its behaviour closely resembles freshwater–seawater mixing dissolution.

On the figure, outer zone (III) is marked by the sharp drop in the calcite saturation index.

The crucial point is this:
👉 The outer dissolution zone (III) creates enhanced pathways for further migration of mine water through the aquifer.
❗ It behaves like a positive-feedback system, progressively increasing its own permeability.

All details, and modelling results are documented in the latest draft of my monograph (v0.75):
🔗 https://zenodo.org/records/16741148

#Geochemistry #Rstats #MixingCorrosion #PHREEQC #SvystunovaGully #Contamimation #Groundwater #Thermodynamics #MineWater