The hypothesis diagram for the high-aluminum light rocks on Jezero, figure 6 from the paper above
The hypothesis diagram for the high-aluminum light rocks on Jezero, figure 6 from the paper above
️ചൊവ്വയിൽ ജീവന്റെ സാന്നിധ്യം? പുതിയ കണ്ടെത്തലുമായി പെഴ്സിവിയറൻസ് റോവർ
Read full story:
https://nivadaily.com/mars-rover-finds-kaolinite-hints-past-water/
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Royer et al: "Intense alteration on early Mars revealed by high-aluminum rocks at Jezero crater"
https://doi.org/10.1038/s43247-024-01837-2
Short summary by @IRAP : https://astrodon.social/@IRAP/114041811773990603
[Under the Martian #tropics ...] There was a time when #water abounded and shaped the Martian #landscapes. This is evidenced by several fragments of clear, alumina-rich #rocks recently analyzed by the instruments of the #Perseverance rover ...
These rocks contain minerals such as #kaolinite, one of the markers of a once habitable environment. Infos+ : https://www.irap.omp.eu/en/2025/02/could-mars-have-had-a-tropical-climate-in-the-past/
[Sous les #tropiques martiens ...] Il fut un temps où l' #eau abondait et façonnait les #paysages martiens. En témoignent plusieurs fragments de #roches claires riches en alumine récemment analysés par les instruments du rover #Perseverance ...
Ces roches renferment des minéraux telle la #kaolinite, l'un des marqueurs d’un environnement autrefois habitable. Infos+ : https://www.irap.omp.eu/2025/02/mars-aurait-elle-connu-un-climat-tropical-passe/
Poster for a new iteration of analysis of light-toned float rocks, and a suggested formation scenario. #spinel #kaolinite
Royer et al : "Mineral Diversity of Light-Toned Float Rocks in Jezero Crater as Seen by SuperCam"
https://www.hou.usra.edu/meetings/lpsc2025/pdf/1872.pdf
18/n
#JezeroDeltaScience #JezeroRimScience #JezeroBrightRocks
[EDIT]: final paper at https://www.nature.com/articles/s43247-024-01837-2
Fuck yeah #MinCup24 time!!
Also, #kaolinite may be classic and will probably win (and will probably be what spouse votes for), but I went for #abelsonite.
Listen I may only be a lay person who doesn't understand all the science, but it's an organonickel. Science thinks the organic part is *chlorophyll* even tho it forms at depth, according to mindat. How fucking cool is that?!
via @MineralCup
Today is the first duel of #MinCup2024. It's the well known #kaolinite, an important ingredient for #porcelain/#china, vs. the rare #mineral #abelsonite. Doesn't matter how rare... #foodbowl beats everything
#DoesItCat ? Of course
Today: last week one of the humans was on #hedgewatch in a #porcelain #cafe. I'm impawressd. One main ingredient of china is the #clay #mineral #kaolinite. Which is produced by weathering of e.g. #feldspar.
Humans #PawForScale
#GeologyWithCats #geology #catsoftwitter #catsofx #CatsOfMastodon
It's neck-and-neck between #Zircon and #Calcite in the #MinCup23 semi-final!
Zircon has knocked out my favorite #Kaolinite the past two years, and so, as revenge, I'm voting for it so it can win and be ineligible to compete in future MinCups!
(I'm sure it has some fine qualities that others will be happy to recite, but I'm driven solely by tactical considerations).
https://www.mineralcup.org/2023/campaigns/campaigns/round-4-match-1
Congratulations and welcome to #MinCup23 Round 3, #Zircon!
For the second year running, the resilient timekeeper has outlasted the industrial softy. Better luck next year, #Kaolinite!
Bracket: https://www.mineralcup.org/bracket
Because of the real properties of #Kaolinite, Boettger (building on Tschirnhaus) was able to produce real porcelain, rather than trying to fake alchemical results that would expose him as a fraud.
All brought to you by the "clay mineral and industrial superstar" kaolinite, which is facing off against zircon in the first match of Round 2 of #MinCup 23.
Kaolinite is awesome! Vote Kaolinite!
https://www.mineralcup.org/2023/campaigns/campaigns/round-2-match-1
Very much a "fool me once..." type of guy, the Elector of Saxony demanded that the process be replicated and the results inspected, and a commission was duly established. Boettger's porcelain passed.
The initial products were red and black "stoneware", but the process for making hard-paste porcelain was quickly refined, and Boettger and his workers were soon capable of making fine, white, translucent, china.
#Kaolinite for the win!
10/
Yeah, yeah, #Zircon tells time...
But #Kaolinite saves lives!
Or, at least one life.
When mixed with the right ingredients and fired at high heat, kaolin clay turns into #porcelain. Understanding this process turned an alchemist facing death for fraud into the first head of the legendary #Meissen porcelain factory. 1/
Follow along, and vote #Kaolinite, #histodons
https://www.mineralcup.org/2023/campaigns/campaigns/round-2-match-1
Todays #Mincup23 duel is #Zircon vs #Kaolinite. I voted for both earlier. Very difficult... I am afraid I must vote for Zircon the sturdy #mineral being impawtent in #geochonology and showing #chatoyancy the #cat's eye effect.
#MinCup2023 #catsofmastodon
#MinCup23
This time, instead of just looking at the Wikipedia pictures, I also skimmed the articles, and learned that #kaolinite is used in manufacturing paper to make it smoother and brighter. As someone who occasionally uses brush pens, I *do* appreciate smooth paper that won't make my brush pens fray, so I'm voting for kaolinite!
#handlettering
#MinCup23 Round 2 Match 1:
Industrial superstar #Kaolinite battles geochronoloy’s resilient stalwart #Zircon. Will the Time Lord outlast another opponent, or will clay slip into Round 3?
Vote: https://www.mineralcup.org/2023/campaigns/campaigns/round-2-match-1