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1000 results for “silicatefondue”
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#Leucite is used to make dental porcelain (or rather, leucite + glass from melting feldspar incongruently). Thiis is becuase it:
is immune system compatible
is machinable
is fracture resistant with low porosity
it doesn't easily stain or discolour
and most importantly, its thermal expansion matches the metal anchorImage from: J.R. Mackert et al (1986)The effect of the leucite transformation on dental porcelain expansion, Dental Materials 2: 32-36
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#Leucite is used to make dental porcelain (or rather, leucite + glass from melting feldspar incongruently). Thiis is becuase it:
is immune system compatible
is machinable
is fracture resistant with low porosity
it doesn't easily stain or discolour
and most importantly, its thermal expansion matches the metal anchorImage from: J.R. Mackert et al (1986)The effect of the leucite transformation on dental porcelain expansion, Dental Materials 2: 32-36
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#Leucite is used to make dental porcelain (or rather, leucite + glass from melting feldspar incongruently). Thiis is becuase it:
is immune system compatible
is machinable
is fracture resistant with low porosity
it doesn't easily stain or discolour
and most importantly, its thermal expansion matches the metal anchorImage from: J.R. Mackert et al (1986)The effect of the leucite transformation on dental porcelain expansion, Dental Materials 2: 32-36
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@FaithfullJohn Unfortunately it suffers from negative relief and pitiful birefringence so it has an image problem...
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@FaithfullJohn Unfortunately it suffers from negative relief and pitiful birefringence so it has an image problem...
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@FaithfullJohn Unfortunately it suffers from negative relief and pitiful birefringence so it has an image problem...
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@FaithfullJohn Unfortunately it suffers from negative relief and pitiful birefringence so it has an image problem...
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@FaithfullJohn Unfortunately it suffers from negative relief and pitiful birefringence so it has an image problem...
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Leucite has a range of volcanic hills named after it, see:
https://www.geowyo.com/leucite-hills.htmlThese are strange, high potassium lamproites from the mantle, only 1-2 million years old.
Match that, organic goo #carpathite !
Students at Smith College have a nice page of #leucite thin section images:
https://www.science.smith.edu/geosciences/petrology/petrography/leucite/leucite.html -
Leucite has a range of volcanic hills named after it, see:
https://www.geowyo.com/leucite-hills.htmlThese are strange, high potassium lamproites from the mantle, only 1-2 million years old.
Match that, organic goo #carpathite !
Students at Smith College have a nice page of #leucite thin section images:
https://www.science.smith.edu/geosciences/petrology/petrography/leucite/leucite.html -
Leucite has a range of volcanic hills named after it, see:
https://www.geowyo.com/leucite-hills.htmlThese are strange, high potassium lamproites from the mantle, only 1-2 million years old.
Match that, organic goo #carpathite !
Students at Smith College have a nice page of #leucite thin section images:
https://www.science.smith.edu/geosciences/petrology/petrography/leucite/leucite.html -
Leucite has a range of volcanic hills named after it, see:
https://www.geowyo.com/leucite-hills.htmlThese are strange, high potassium lamproites from the mantle, only 1-2 million years old.
Match that, organic goo #carpathite !
Students at Smith College have a nice page of #leucite thin section images:
https://www.science.smith.edu/geosciences/petrology/petrography/leucite/leucite.html -
Leucite has a range of volcanic hills named after it, see:
https://www.geowyo.com/leucite-hills.htmlThese are strange, high potassium lamproites from the mantle, only 1-2 million years old.
Match that, organic goo #carpathite !
Students at Smith College have a nice page of #leucite thin section images:
https://www.science.smith.edu/geosciences/petrology/petrography/leucite/leucite.html -
A page on #baryte found in Nova Scotia by Ronnie Van Dommelen. To quote: "The best use for barite, however, is as a beautiful mineral specimen!"
http://nsminerals.atspace.com/barite.html
The photos unfortunately have no scale indicated (except for the early1950's Willys Wagon).
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Re-post from MinCup past:
The non-detection of #perovskite in non-stars shows that it's there.Cool red dwarf stars have deep absorption bands from TIO gas in their atmospheres. In yet cooler brown dwarfs those bands have disappeared: opaque perovsite dust has condensed, making the titanium invisible.
Spectra from Kesseli et al. (2017), images from Gabicca, LEAP group.
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Re-post from MinCup past:
The non-detection of #perovskite in non-stars shows that it's there.Cool red dwarf stars have deep absorption bands from TIO gas in their atmospheres. In yet cooler brown dwarfs those bands have disappeared: opaque perovsite dust has condensed, making the titanium invisible.
Spectra from Kesseli et al. (2017), images from Gabicca, LEAP group.
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Re-post from MinCup past:
The non-detection of #perovskite in non-stars shows that it's there.Cool red dwarf stars have deep absorption bands from TIO gas in their atmospheres. In yet cooler brown dwarfs those bands have disappeared: opaque perovsite dust has condensed, making the titanium invisible.
Spectra from Kesseli et al. (2017), images from Gabicca, LEAP group.
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Re-post from MinCup past:
The non-detection of #perovskite in non-stars shows that it's there.Cool red dwarf stars have deep absorption bands from TIO gas in their atmospheres. In yet cooler brown dwarfs those bands have disappeared: opaque perovsite dust has condensed, making the titanium invisible.
Spectra from Kesseli et al. (2017), images from Gabicca, LEAP group.
-
Re-post from MinCup past:
The non-detection of #perovskite in non-stars shows that it's there.Cool red dwarf stars have deep absorption bands from TIO gas in their atmospheres. In yet cooler brown dwarfs those bands have disappeared: opaque perovsite dust has condensed, making the titanium invisible.
Spectra from Kesseli et al. (2017), images from Gabicca, LEAP group.
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Repost from MinCup24: Antimony Tin Oxide scatters the wavelengths of infrared light emitted by warm humans. The antimony is often sourced from #stibnite. This material is being used to create fabric infrared invisibility cloaks!
from Jeong et al. (2020) NPG Asia Materials
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Quite a bit of #Chrysotile was extracted from the Jeffrey Mine, Quebec. It is located on a line of oceanic lithosphere attached to North America during the growth of the Appalachians.
The town of Asbestos, home of the mine, has been renamed 'Val-des-Sources'.
Much of the expense of renovating buildings in Quebec is the cost of removing the asbestos insulation.
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The Mineralogical Society of America (publisher of the American Mineralogist and Reviews in Mineralogy and Geochemistry, et al.) is now bridged to the fediverse!
Follow:
@mineralsocamerica.bsky.socialMore #ThinSectionThursday posts, e.g.:
https://bsky.app/profile/mineralsocamerica.bsky.social/post/3lxhlcc5zts2t
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The Mineralogical Society of America (publisher of the American Mineralogist and Reviews in Mineralogy and Geochemistry, et al.) is now bridged to the fediverse!
Follow:
@mineralsocamerica.bsky.socialMore #ThinSectionThursday posts, e.g.:
https://bsky.app/profile/mineralsocamerica.bsky.social/post/3lxhlcc5zts2t
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The Mineralogical Society of America (publisher of the American Mineralogist and Reviews in Mineralogy and Geochemistry, et al.) is now bridged to the fediverse!
Follow:
@mineralsocamerica.bsky.socialMore #ThinSectionThursday posts, e.g.:
https://bsky.app/profile/mineralsocamerica.bsky.social/post/3lxhlcc5zts2t
-
The Mineralogical Society of America (publisher of the American Mineralogist and Reviews in Mineralogy and Geochemistry, et al.) is now bridged to the fediverse!
Follow:
@mineralsocamerica.bsky.socialMore #ThinSectionThursday posts, e.g.:
https://bsky.app/profile/mineralsocamerica.bsky.social/post/3lxhlcc5zts2t
-
The Mineralogical Society of America (publisher of the American Mineralogist and Reviews in Mineralogy and Geochemistry, et al.) is now bridged to the fediverse!
Follow:
@mineralsocamerica.bsky.socialMore #ThinSectionThursday posts, e.g.:
https://bsky.app/profile/mineralsocamerica.bsky.social/post/3lxhlcc5zts2t
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This year's Mineral Cup bracket! Starts September 1st at www.MineralCup.org
How in the world will I choose between #Paddlewheelite and #Mannardite ?
#MinCup #MinCup25 #Mineralogy #Geology #EarthMaterials #MineralCup
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Utility covers turned into street art.
Hackescher Markt, Berlin
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