Pyroxene with exsolution lamellae in a gabbro from Susa, Yamaguchi, Japan.
January 2, 2025 at 10:47 AM
Pyroxene with exsolution lamellae in a gabbro from Susa, Yamaguchi, Japan.
#ThinSectionThursday Exsolution and alteration of Fe-Ti-Mn oxides from a weathering horizon of carbonatite in Western Australia
May 2, 2025 at 2:27 AM
#ThinSectionThursday Exsolution and alteration of Fe-Ti-Mn oxides from a weathering horizon of carbonatite in Western Australia
In XPL, exquisite exsolution in alkali feldspar (perthite). Hints of granophyric intergrowth with quartz. Riebeckite (Fe3+ rich) amphibole is somewhat masked but edged in places with vivid interference colours of Fe3+ bearing biotite. Granite from Mt Tremont, NH, USA #ThinSectionThursday 🧪⚒️
September 11, 2025 at 11:26 AM
In XPL, exquisite exsolution in alkali feldspar (perthite). Hints of granophyric intergrowth with quartz. Riebeckite (Fe3+ rich) amphibole is somewhat masked but edged in places with vivid interference colours of Fe3+ bearing biotite. Granite from Mt Tremont, NH, USA #ThinSectionThursday 🧪⚒️
I don't often work with igneous rocks, but they do have cool microstructures, too!
Skeletal Fe-Ti-oxide grains with lots of exsolution lamellae. (Width of image is ca 40 µm.)
#ThinsectionThursday
Skeletal Fe-Ti-oxide grains with lots of exsolution lamellae. (Width of image is ca 40 µm.)
#ThinsectionThursday
December 19, 2024 at 8:02 AM
I don't often work with igneous rocks, but they do have cool microstructures, too!
Skeletal Fe-Ti-oxide grains with lots of exsolution lamellae. (Width of image is ca 40 µm.)
#ThinsectionThursday
Skeletal Fe-Ti-oxide grains with lots of exsolution lamellae. (Width of image is ca 40 µm.)
#ThinsectionThursday
Bluesky needs some more cool geo images, so here's some orthopyroxene from a serpentinized peridotite (Semail ophiolite, Oman), seen with cross-polarised light in the optical microscope. The coloured patches seem to be exsolution features.
May 28, 2024 at 9:54 AM
Bluesky needs some more cool geo images, so here's some orthopyroxene from a serpentinized peridotite (Semail ophiolite, Oman), seen with cross-polarised light in the optical microscope. The coloured patches seem to be exsolution features.
Sillimanite; rutile; garnet; reddish biotite; and somewhat altered plagioclase. XP: garnet is black, sillimanite is gray, and feldspar shows some exsolution. Contributed by Matt Kohn. You can contribute too! Send images and short caption to akoziol1 at udayton dot edu. #thinsectionthursday
July 24, 2025 at 1:10 PM
Sillimanite; rutile; garnet; reddish biotite; and somewhat altered plagioclase. XP: garnet is black, sillimanite is gray, and feldspar shows some exsolution. Contributed by Matt Kohn. You can contribute too! Send images and short caption to akoziol1 at udayton dot edu. #thinsectionthursday
The exsolution of Helium-3 from Earth's core:
www.geologyin.com/2023/05/heli...
This rare isotope is leaking from magnesium oxide in seabed volcanic rocks after being trapped during Earth's formation, but likely in quantities far too low to be useful as a fusion fuel source.
www.geologyin.com/2023/05/heli...
This rare isotope is leaking from magnesium oxide in seabed volcanic rocks after being trapped during Earth's formation, but likely in quantities far too low to be useful as a fusion fuel source.
September 19, 2025 at 1:23 AM
The exsolution of Helium-3 from Earth's core:
www.geologyin.com/2023/05/heli...
This rare isotope is leaking from magnesium oxide in seabed volcanic rocks after being trapped during Earth's formation, but likely in quantities far too low to be useful as a fusion fuel source.
www.geologyin.com/2023/05/heli...
This rare isotope is leaking from magnesium oxide in seabed volcanic rocks after being trapped during Earth's formation, but likely in quantities far too low to be useful as a fusion fuel source.
Thin Section Thursday!
This megacryst of orthopyroxene shows high relief and faint pleochroism in PPL. Cross the polars, & the crystal comes alive with abundant thin bands of exsolution lamellae of clinopyroxene. Contributed by Matt Kohn. #thinsectionthursday
This megacryst of orthopyroxene shows high relief and faint pleochroism in PPL. Cross the polars, & the crystal comes alive with abundant thin bands of exsolution lamellae of clinopyroxene. Contributed by Matt Kohn. #thinsectionthursday
November 13, 2025 at 1:40 PM
Thin Section Thursday!
This megacryst of orthopyroxene shows high relief and faint pleochroism in PPL. Cross the polars, & the crystal comes alive with abundant thin bands of exsolution lamellae of clinopyroxene. Contributed by Matt Kohn. #thinsectionthursday
This megacryst of orthopyroxene shows high relief and faint pleochroism in PPL. Cross the polars, & the crystal comes alive with abundant thin bands of exsolution lamellae of clinopyroxene. Contributed by Matt Kohn. #thinsectionthursday
Try as I might I couldn't capture the sharpness of the perthite exsolution in this thin section. Just had to post best I got 😢.
September 11, 2025 at 11:26 AM
Try as I might I couldn't capture the sharpness of the perthite exsolution in this thin section. Just had to post best I got 😢.
While I was preparing for my teaching lab, I came across this gorgeous anorthosite showing pyroxene exsolution textures! Check out that cpx trying mightily to leave an orthopyroxene host.
A real treat for #thinsectionthursday
Field of view is 3 mm, and xpl image is taken with sensitive tint plate
A real treat for #thinsectionthursday
Field of view is 3 mm, and xpl image is taken with sensitive tint plate
November 9, 2023 at 8:33 PM
While I was preparing for my teaching lab, I came across this gorgeous anorthosite showing pyroxene exsolution textures! Check out that cpx trying mightily to leave an orthopyroxene host.
A real treat for #thinsectionthursday
Field of view is 3 mm, and xpl image is taken with sensitive tint plate
A real treat for #thinsectionthursday
Field of view is 3 mm, and xpl image is taken with sensitive tint plate
Like
"Mining Dilithium isn't easy, it's not like picking up rocks in the backyard. You have to find an area of prior fractional crystallization, wherein you'll find nanometre thin exsolution lamellae of both lithium and dilithium within surrounding spodumene minerals in pegamite formations."
"Mining Dilithium isn't easy, it's not like picking up rocks in the backyard. You have to find an area of prior fractional crystallization, wherein you'll find nanometre thin exsolution lamellae of both lithium and dilithium within surrounding spodumene minerals in pegamite formations."
July 7, 2026 at 12:48 PM
Like
"Mining Dilithium isn't easy, it's not like picking up rocks in the backyard. You have to find an area of prior fractional crystallization, wherein you'll find nanometre thin exsolution lamellae of both lithium and dilithium within surrounding spodumene minerals in pegamite formations."
"Mining Dilithium isn't easy, it's not like picking up rocks in the backyard. You have to find an area of prior fractional crystallization, wherein you'll find nanometre thin exsolution lamellae of both lithium and dilithium within surrounding spodumene minerals in pegamite formations."
🔊PhD Position Nano-catalyst exsolution for electrochemical synthesis of renewable fuels
📍Instituto de Tecnología Química, ITQ, UPV-CSIC
🗓️ Fecha límite/Deadline: 01/01/2026
➡️
📍Instituto de Tecnología Química, ITQ, UPV-CSIC
🗓️ Fecha límite/Deadline: 01/01/2026
➡️
PhD Position Nano-catalyst exsolution for electrochemical... – RSEQ
A PhD Position Nano-catalyst exsolution for electrochemical synthesis of renewable fuels is available at the Instituto de Tecnología Química, ITQ, UPV-CSIC in Valencia. They are looking for a…
shre.ink
December 24, 2025 at 8:01 AM
🔊PhD Position Nano-catalyst exsolution for electrochemical synthesis of renewable fuels
📍Instituto de Tecnología Química, ITQ, UPV-CSIC
🗓️ Fecha límite/Deadline: 01/01/2026
➡️
📍Instituto de Tecnología Química, ITQ, UPV-CSIC
🗓️ Fecha límite/Deadline: 01/01/2026
➡️
Proof of concept!
There are known instances where melts have quenched themselves by exsolving fluids near isothermally and hitting their dry solidus temperature!
The paper's even open acces.
There are known instances where melts have quenched themselves by exsolving fluids near isothermally and hitting their dry solidus temperature!
The paper's even open acces.
May 31, 2024 at 11:21 PM
Proof of concept!
There are known instances where melts have quenched themselves by exsolving fluids near isothermally and hitting their dry solidus temperature!
The paper's even open acces.
There are known instances where melts have quenched themselves by exsolving fluids near isothermally and hitting their dry solidus temperature!
The paper's even open acces.
⚒️ Article: The proposed basal magma ocean within the early Earth may have been contaminated by oxides exsolved from the core, which could explain seismic velocity anomalies observed in the lowermost mantle
www.nature.com/articles/s41...
www.nature.com/articles/s41...
September 12, 2025 at 3:30 PM
⚒️ Article: The proposed basal magma ocean within the early Earth may have been contaminated by oxides exsolved from the core, which could explain seismic velocity anomalies observed in the lowermost mantle
www.nature.com/articles/s41...
www.nature.com/articles/s41...
I love both minerals! Hematite makes BIFs, one of the best rocks, plus it has so many habits and finishes. Haüyne makes gorgeous blues and it likes to capture bubbles and other minerals as inclusions. It also has some cool patterns on thin section.
TS images: www.alexstrekeisen.it/english/vulc...
TS images: www.alexstrekeisen.it/english/vulc...
September 25, 2025 at 1:11 PM
I love both minerals! Hematite makes BIFs, one of the best rocks, plus it has so many habits and finishes. Haüyne makes gorgeous blues and it likes to capture bubbles and other minerals as inclusions. It also has some cool patterns on thin section.
TS images: www.alexstrekeisen.it/english/vulc...
TS images: www.alexstrekeisen.it/english/vulc...
📸 Amazonite from Beinn Bhreac, Sutherland
Amazonite was first recognised in Scotland in 1875 in boulders on the slopes of Beinn Bhreac. These had been glacially transported from their source, a pegmatite vein in the Ben Loyal alkaline intrusion.
#MineralMonday #ScottishGeology
Amazonite was first recognised in Scotland in 1875 in boulders on the slopes of Beinn Bhreac. These had been glacially transported from their source, a pegmatite vein in the Ben Loyal alkaline intrusion.
#MineralMonday #ScottishGeology
March 24, 2025 at 2:01 PM
📸 Amazonite from Beinn Bhreac, Sutherland
Amazonite was first recognised in Scotland in 1875 in boulders on the slopes of Beinn Bhreac. These had been glacially transported from their source, a pegmatite vein in the Ben Loyal alkaline intrusion.
#MineralMonday #ScottishGeology
Amazonite was first recognised in Scotland in 1875 in boulders on the slopes of Beinn Bhreac. These had been glacially transported from their source, a pegmatite vein in the Ben Loyal alkaline intrusion.
#MineralMonday #ScottishGeology
Researchers from Jülich, Berkeley, and Imperial College London are improving metal exsolution catalyst design principles to enhance catalyst stability in #greenhydrogen production.
#GreenHydrogen #RenewableEnergy #Catalysts #HydrogenNow #CleanEnergy
fcw.sh/FMR3tG
#GreenHydrogen #RenewableEnergy #Catalysts #HydrogenNow #CleanEnergy
fcw.sh/FMR3tG
December 19, 2024 at 5:34 PM
Researchers from Jülich, Berkeley, and Imperial College London are improving metal exsolution catalyst design principles to enhance catalyst stability in #greenhydrogen production.
#GreenHydrogen #RenewableEnergy #Catalysts #HydrogenNow #CleanEnergy
fcw.sh/FMR3tG
#GreenHydrogen #RenewableEnergy #Catalysts #HydrogenNow #CleanEnergy
fcw.sh/FMR3tG
American Mineralogist:
Microstructural and chemical responses of lunar pyroxene to shock shearing under low-to-moderate shock conditions
Jiawei Zhao, et al.
doi.org/10.2138/am-2...
Shock shearing facilitates systematic plastic deformation, frictional melting, and pigeonite exsolution in augite.
Microstructural and chemical responses of lunar pyroxene to shock shearing under low-to-moderate shock conditions
Jiawei Zhao, et al.
doi.org/10.2138/am-2...
Shock shearing facilitates systematic plastic deformation, frictional melting, and pigeonite exsolution in augite.
April 1, 2026 at 1:14 PM
American Mineralogist:
Microstructural and chemical responses of lunar pyroxene to shock shearing under low-to-moderate shock conditions
Jiawei Zhao, et al.
doi.org/10.2138/am-2...
Shock shearing facilitates systematic plastic deformation, frictional melting, and pigeonite exsolution in augite.
Microstructural and chemical responses of lunar pyroxene to shock shearing under low-to-moderate shock conditions
Jiawei Zhao, et al.
doi.org/10.2138/am-2...
Shock shearing facilitates systematic plastic deformation, frictional melting, and pigeonite exsolution in augite.
Sillimanite; rutile; garnet; reddish biotite; and somewhat altered plagioclase. XP: garnet is black, sillimanite is gray, and feldspar shows some exsolution. Contributed by Matt Kohn. You can contribute too! Send images and short caption to akoziol1 at udayton dot edu. #thinsectionthursday
July 24, 2025 at 1:08 PM
Sillimanite; rutile; garnet; reddish biotite; and somewhat altered plagioclase. XP: garnet is black, sillimanite is gray, and feldspar shows some exsolution. Contributed by Matt Kohn. You can contribute too! Send images and short caption to akoziol1 at udayton dot edu. #thinsectionthursday
‘Rational Design and Dynamic Ru Exsolution Enables Active Heterostructures Surpassing Pt for Alkaline Hydrogen Evolution' features on the front cover of #JACS' new issue.
Explore the research behind the art: buff.ly/3bBlA4k
#ACS150
Explore the research behind the art: buff.ly/3bBlA4k
#ACS150
January 28, 2026 at 1:00 PM
‘Rational Design and Dynamic Ru Exsolution Enables Active Heterostructures Surpassing Pt for Alkaline Hydrogen Evolution' features on the front cover of #JACS' new issue.
Explore the research behind the art: buff.ly/3bBlA4k
#ACS150
Explore the research behind the art: buff.ly/3bBlA4k
#ACS150
Eh, hell.
Staking a position that a lot of seismicity* observed around volcanoes is related to movement/exsolution/disturbance of aqueous fluid rather than the magma itself.
This appears to be true for the mantle, so why not the crust?
*Excluding tremor.
Staking a position that a lot of seismicity* observed around volcanoes is related to movement/exsolution/disturbance of aqueous fluid rather than the magma itself.
This appears to be true for the mantle, so why not the crust?
*Excluding tremor.
October 24, 2025 at 2:35 AM
Eh, hell.
Staking a position that a lot of seismicity* observed around volcanoes is related to movement/exsolution/disturbance of aqueous fluid rather than the magma itself.
This appears to be true for the mantle, so why not the crust?
*Excluding tremor.
Staking a position that a lot of seismicity* observed around volcanoes is related to movement/exsolution/disturbance of aqueous fluid rather than the magma itself.
This appears to be true for the mantle, so why not the crust?
*Excluding tremor.
What to know about the geodynamo paradox:
– Earth's magnetic field is ≥3.5 B years old
– The inner core, today's main power source, may only be ~0.5–1 B years old
– Iron's conductivity, remeasured in 2012, broke the old energy budget
– Candidate fixes: MgO exsolution, SiO₂ crystallization
– Earth's magnetic field is ≥3.5 B years old
– The inner core, today's main power source, may only be ~0.5–1 B years old
– Iron's conductivity, remeasured in 2012, broke the old energy budget
– Candidate fixes: MgO exsolution, SiO₂ crystallization
August 20, 2026 at 10:55 AM
What to know about the geodynamo paradox:
– Earth's magnetic field is ≥3.5 B years old
– The inner core, today's main power source, may only be ~0.5–1 B years old
– Iron's conductivity, remeasured in 2012, broke the old energy budget
– Candidate fixes: MgO exsolution, SiO₂ crystallization
– Earth's magnetic field is ≥3.5 B years old
– The inner core, today's main power source, may only be ~0.5–1 B years old
– Iron's conductivity, remeasured in 2012, broke the old energy budget
– Candidate fixes: MgO exsolution, SiO₂ crystallization
📢 Tomorrow: we are excited to welcome Dr. Annette Trunschke from Fritz-Haber-Institute of the Max-Planck Societyto our #CRC1333 Colloquium Series. She will give a talk on “Creation of Functional Interfaces from Oxide Precursors via Exsolution Strategies“
▶️more info here 🔗: bit.ly/4ikMq7f
▶️more info here 🔗: bit.ly/4ikMq7f
November 26, 2025 at 7:07 AM
📢 Tomorrow: we are excited to welcome Dr. Annette Trunschke from Fritz-Haber-Institute of the Max-Planck Societyto our #CRC1333 Colloquium Series. She will give a talk on “Creation of Functional Interfaces from Oxide Precursors via Exsolution Strategies“
▶️more info here 🔗: bit.ly/4ikMq7f
▶️more info here 🔗: bit.ly/4ikMq7f
Also metamorphic rocks can have really cool Fe-Ti oxides! I found this cluster with intergrowths of Ti-magnetite and Mn-ilmenite (white & grey lines resp.), and rutile with non-Mn-ilmenite exsolution (grey & white lines resp.), in garnetite from Lago di Cignana.
December 19, 2024 at 8:41 AM
Also metamorphic rocks can have really cool Fe-Ti oxides! I found this cluster with intergrowths of Ti-magnetite and Mn-ilmenite (white & grey lines resp.), and rutile with non-Mn-ilmenite exsolution (grey & white lines resp.), in garnetite from Lago di Cignana.