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1000 results for “silicatefondue”
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#Neptunite can have solid solution substitutions. The photo below is of a manganese-rich neptunite from Mont Saint-Hilaire. Photo by dakotamatrix dot com
#MinCup23 #Quebec -
#Neptunite can have solid solution substitutions. The photo below is of a manganese-rich neptunite from Mont Saint-Hilaire. Photo by dakotamatrix dot com
#MinCup23 #Quebec -
A bit of red on a white day
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The ground we live on is the top of a moving rock area that is really hot. The ground we live on is broken up into little rocks. Sometimes the little rocks move on top of each other. This makes the rocks get really tall. Sometimes one goes under the other one. The under rock gets really hot and becomes the moving rock under the ground. The moving rock under us sometimes comes up through the ground making new hot rock. [J. G.]
#PlateTectonics #UpGoer5 #EarthSystemScience #McGillUniversity -
Upon death, living things either break down as the surrounding air, in a way, quickly eats up what is left of them or, they get covered under ground when not broken down. As the ground layer above gets bigger and heavier, the remains are pressed into a different and thicker form of matter. It takes a lot of time for the ground layer to grow heavy enough to change the state of the matter in such a way. Those old remains can then be burnt for power.
[V. B.]
#FossilFuels #UpGoer5 #McGillUniversity -
The really big ball that we live on is made of huge pieces of ground that move around. Sometimes they knock into each other, run away from each other, or slip side to side. If two of them get stuck, power builds up in the rock and lets go as they are set free. The ground shakes a lot, large cracks form, rocks might slip down, and houses fall. If that happens in the big water area, a very tall wave will move onto the land and run into it. [M. T.]
#Earthquake #UpGoer5 #McGillUniversity -
#UpGoer5 As the number of people gets bigger in an area, the number of stuff that is able to back them up gets lower. The number of people found in a place is controlled by what is going on around them; such as how much food, water and homes found. When the total of how much of these is found around them gets lower, the total number of people coming into this world gets less. They then reach a still state where the number of people stops getting big. [L.N.] #CarryingCapacity #McGillUniversity
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More #EarthSystemScience #UpGoer5
Trees can tell us is what the world was like in the past. The rings inside a tree can show us how much it grew each year. In wet years, the tree will grow a thick ring, and in dry years, it will grow a small ring. People can study tree rings to see how hot and cold the world has been and how it has changed over time. It helps us understand how the world is changing now and how it may change. [S. H.-R.]
#Proxies #McGillUniversity #SimpleWords -
Ekman spiral continued....
The deeper water does not feel the wind, but it does feel the water above moving. So the same thing happens again, except this time the water goes in a direction even further from that of the wind, and so on, turning as we go deeper. At each step, we lose a bit of force, so we have less and less as we go down.
[A. B.-K.]
[2/2]
#Ekman #UpGoer5 #McGillUniversity #SimpleWords #EarthSystemScience -
When there is wind over water, the water's direction is normal to that of the wind. Whether it goes left or right is decided by the side of the mother ball we are on. Since the mother ball turns, the water closest to the middle goes the fastest. So when wind carries water further away from the middle, the water keeps its force, and that's why it doesn't move in the same direction as the wind. Continued....
[A. B.-K.]
[1/2]
#Ekman #UpGoer5 #McGillUniversity #SimpleWords -
Did you know that floors can move and dance? You can see it if you give it a chance. There are three ways the floor can move. The first is when two floors move close together. The second way the floor can move is when one floor is moving left and the other floor is moving right. This little dance can make points with hot red coming out. The final move a floor can do is rub close and shake, making a little dance for me, and you! [C.M.]
#plateTectonics #upgoer5 #McGillUniversity #simpleWords -
I asked my students to explain an Earth System Science concept using only the ten hundred most common English words. Inspired by a toot by Andy @revkin and enabled by Theo Sanderson's online editor: https://splasho.com/upgoer5/
There were some amazingly creative creations!
#upgoer5 #simplewords #Earth SystemScience -
Kyanite isn't just a fetching blue mineral that documents the experience of sediments under extreme duress.
It's an ore -Virginia alone mined 83,000 tonnes in 2023. Kyanite in furnace insulation transforms to mullite when heated, expanding to reduce porosity and shrinkage.Virginia Kyanite (photo: J. Wyman) from:
https://energy.virginia.gov/geology/Kyanite.shtml#MinCup24 #Kyanite #Mullite #Virginia #Piedmont #Appalachians
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The student favorite at last weekend's Montreal Gem and Mineral show was this dinosaur footprint from Middletown, Connecticut. This is in the Triassic rift that's now the Connecticut River valley and the track was made by an unknown species. The generic name for the tracks ('Eubrontes') is the Connecticut State fossil.
It didn't sell, and spurred discussions of private versus public ownership of our fossil heritage.
#FossilFriday #Triassic #Connecticut #Dinosaur #RiftValley #Eubrontes
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#zircon is useful for fission-track cooling ages too -its closure temperature is ~220°C (the temperature when the fission tracks are annealed away). John Garver's group at Union college (@geo_garver) used ziron fission tracks to show that the same Adirondack rocks have been cooling since the late-Precambrian/Cambrian rifting of Rodinia.
#MinCup23 #zircon #Adirondack #UnionCollege -
Congratulations to Dr. Keavin Moore, who successfully defended his PhD thesis, "Coupled Models of Water on Terrestrial Planets Orbiting M-Dwarfs"
(supervised by Nic Cowan)Keavin's models predict that water dissolved in a magma ocean, combined with recycling hydrated crust back into the mantle, can both limit water loss during the early active phase of a red dwarf star.
#McGIllUniversity #Exoplanets #MagmaOcean #Atmosphere #WaterWorld #RedDwarf
#TerrestrialWater -
A titanite lozenge imaged both using a cellphone through the microscope ocular, and with a proper imaging system. It's surrounded mostly by quartz (+feldspar).
Likely from the Grenville, but from a teaching collection two generations of retired professors ago.
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A titanite lozenge imaged both using a cellphone through the microscope ocular, and with a proper imaging system. It's surrounded mostly by quartz (+feldspar).
Likely from the Grenville, but from a teaching collection two generations of retired professors ago.
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A titanite lozenge imaged both using a cellphone through the microscope ocular, and with a proper imaging system. It's surrounded mostly by quartz (+feldspar).
Likely from the Grenville, but from a teaching collection two generations of retired professors ago.
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A titanite lozenge imaged both using a cellphone through the microscope ocular, and with a proper imaging system. It's surrounded mostly by quartz (+feldspar).
Likely from the Grenville, but from a teaching collection two generations of retired professors ago.
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I've seen sphene! (Sounds better than "the rock is tight with titanite")
Centimeter-size black sphene (titanite) with apatite (dark brown) and orthoclase feldspar (light brown). Folding pocket knife for scale.
From the Bancroft locality in Ontario, Canada. Grenville-aged (~1.2± billion years)
#MinCup24 #Titanite #Sphene #Bancroft #Ontario #Geology -
I've seen sphene! (Sounds better than "the rock is tight with titanite")
Centimeter-size black sphene (titanite) with apatite (dark brown) and orthoclase feldspar (light brown). Folding pocket knife for scale.
From the Bancroft locality in Ontario, Canada. Grenville-aged (~1.2± billion years)
#MinCup24 #Titanite #Sphene #Bancroft #Ontario #Geology -
I've seen sphene! (Sounds better than "the rock is tight with titanite")
Centimeter-size black sphene (titanite) with apatite (dark brown) and orthoclase feldspar (light brown). Folding pocket knife for scale.
From the Bancroft locality in Ontario, Canada. Grenville-aged (~1.2± billion years)
#MinCup24 #Titanite #Sphene #Bancroft #Ontario #Geology -
I've seen sphene! (Sounds better than "the rock is tight with titanite")
Centimeter-size black sphene (titanite) with apatite (dark brown) and orthoclase feldspar (light brown). Folding pocket knife for scale.
From the Bancroft locality in Ontario, Canada. Grenville-aged (~1.2± billion years)
#MinCup24 #Titanite #Sphene #Bancroft #Ontario #Geology -
Vivianite! Phosphate bones plus dissolved iron equals blue #Vivianite.
https://www.alaskasnewssource.com/2023/10/28/rare-blue-tusked-mammoth-auction-anchorage/
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Perovskite is found just west of Montreal in the Oka Complex; Carbonate-rich, silica-poor magma emplaced in the Cretaceous. The site was mined for niobium in the 1960's and 1970's -it's also enriched in REEs and thorium.
There’s more about perovsite at Oka on MinDat:
https://www.mindat.org/locentries.php?p=14009&m=3166
a non-profit mineral data base founded in 2000 by Jolyon Ralph (who is on Mastodon at @jolyon )#MinCup24 #Perovsite #Oka #Carbonatite #Quebec #Canada #niobium
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Perovskite is found just west of Montreal in the Oka Complex; Carbonate-rich, silica-poor magma emplaced in the Cretaceous. The site was mined for niobium in the 1960's and 1970's -it's also enriched in REEs and thorium.
There’s more about perovsite at Oka on MinDat:
https://www.mindat.org/locentries.php?p=14009&m=3166
a non-profit mineral data base founded in 2000 by Jolyon Ralph (who is on Mastodon at @jolyon )#MinCup24 #Perovsite #Oka #Carbonatite #Quebec #Canada #niobium
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Perovskite is found just west of Montreal in the Oka Complex; Carbonate-rich, silica-poor magma emplaced in the Cretaceous. The site was mined for niobium in the 1960's and 1970's -it's also enriched in REEs and thorium.
There’s more about perovsite at Oka on MinDat:
https://www.mindat.org/locentries.php?p=14009&m=3166
a non-profit mineral data base founded in 2000 by Jolyon Ralph (who is on Mastodon at @jolyon )#MinCup24 #Perovsite #Oka #Carbonatite #Quebec #Canada #niobium
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Perovskite is found just west of Montreal in the Oka Complex; Carbonate-rich, silica-poor magma emplaced in the Cretaceous. The site was mined for niobium in the 1960's and 1970's -it's also enriched in REEs and thorium.
There’s more about perovsite at Oka on MinDat:
https://www.mindat.org/locentries.php?p=14009&m=3166
a non-profit mineral data base founded in 2000 by Jolyon Ralph (who is on Mastodon at @jolyon )#MinCup24 #Perovsite #Oka #Carbonatite #Quebec #Canada #niobium
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Quebec has industrial quantities of kyanite -although I don't think any are being mined today. They're in the Grenville, the roots of the Himalayan-scale mountains formed over a billion years ago. The screenshot below is from MinDat: https://www.mindat.org/locentries.php?p=14009&m=2303
The Ministère has an awkwardly translated page "Mineral Substances in Quebec" that includes Kyanite in its list of wealth:
https://gq.mines.gouv.qc.ca/portail-substances-minerales_en/#MinCup25 #Kyanite #Quebec #Grenville #PlateTectonics #Minerals