#mincup25 — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #mincup25, aggregated by home.social.
-
Native copper in a sedimentary conglomerate. It is proposed that detrital hematite reacts with copper sulfate solutions to reduce the copper and the fluids carry away the iron and sulfur.
From Calumet and Hekla Mine, Michigan. University of Waterloo Earth Sciences Museum Collection.
#OreCup25 #MinCup25 #Copper #Michigan #UpperPeninsula #UWaterloo
-
And here are color versions of the 32 minerals in #MinCup25 placed on the bracket.
Winner #Kyanite, runner up #Tugtupite
Drawings by Fernando Salvaterra on BlueSky(@salvaterra.bsky.social)
-
We have a #MinCup25 champion!!
Congratulations, #Kyanite!
https://www.mineralcup.org/2025After eight years of competing, another few hours to verify votes was nothing, right?
Amazing first run, #Tugtupite, and better luck next year.
-
@MineralCup What a wonderful month of friendly contest! Thank you to all who made #MinCup25 possible!
Although I'm still annoyed that beautiful and intriguing #Sapphirine hasn't been back since 2023!
-
@MineralCup What a wonderful month of friendly contest! Thank you to all who made #MinCup25 possible!
Although I'm still annoyed that beautiful and intriguing #Sapphirine hasn't been back since 2023!
-
@MineralCup What a wonderful month of friendly contest! Thank you to all who made #MinCup25 possible!
Although I'm still annoyed that beautiful and intriguing #Sapphirine hasn't been back since 2023!
-
@MineralCup What a wonderful month of friendly contest! Thank you to all who made #MinCup25 possible!
Although I'm still annoyed that beautiful and intriguing #Sapphirine hasn't been back since 2023!
-
@MineralCup What a wonderful month of friendly contest! Thank you to all who made #MinCup25 possible!
Although I'm still annoyed that beautiful and intriguing #Sapphirine hasn't been back since 2023!
-
With #Kyanite in the final, better purchase your samples today (from your favourite retailer) before the prices go up!
Own the winner for a reasonable cost!
-
The Montreal Gem and Mineral Show is happening at the end of the month in the main convention center (Le Palais des Congrès).
No guarantee of fantastic #Tugtupite or #Kyanite samples, but many others for sure. There's always a good representation of Canadian and Quebec localities.
#MinCup25 #Montreal #Quebec #Canada #MontSaintHilaire #Grenville #Minerals
-
Wouldn't it be amazing to have a kitchen counter top made from kyanite?!
Photos from:
https://primestones.com/blogs/kyanite-a-blue-gem/ -
#MinCup25 Final: After a month of learning and laughter, victory and heartbreak, we’re at the final match to determine the 2025 Mineral Cup Champion! We have blue blades of #kyanite up against optical magician #tugtupite.
Vote: https://www.mineralcup.org/2025/vote/r5m01
Results: https://www.mineralcup.org/2025/results/r5m01 -
With 5.5 hours remaining to vote, #Tugtupite has the lead by under 40 votes over #Dioptase.
Campaign for your fav and recruit new players to pick which mineral will compete in the #MinCup25 finals against #Kyanite!
-
Repost: 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 -
#MinCup25 Semifinals 1: It's a battle of classic minerals for red #hematite vs blue #kyanite.
Vote: https://www.mineralcup.org/2025/vote/r4m01
Results: https://www.mineralcup.org/2025/results/r4m01 -
This is one of the dykes found near Ayer's Cliff, just SE of Magog, Quebec. It's a set of three dykes, one of which has the deep-derived xenoliths. That one dyke (not photogenic) has weathered much faster, perhaps due to a higher carbonate content.
#kyanite #MinCup25 #Quebec #Xenolith #Grenville #Appalachians -
#MinCup25 QF3 UPDATED RESULTS:
#KYANITE win and will continue on to the semi-finals.We’re so sorry for the false hope, #Kosmochlor fans, but we caught 3 players stuffing the ballot box in the final hours. Once their excess votes were removed, Kyanite’s lead returned (although you did close the gap a lot!)
-
A photo of a Cretaceous dyke intruding into Appalachian-deformed sedimentary rocks deposited in the lower Paleozoic: Earth history from 110 to almost 500 million years ago.
But #kyanite records more of the story: it's part of xenoliths brought to the surface by these dykes that document Grenville crust (1.1 billion years old) at depth.
See: Trzcienski: Kyanite-garnet-bearing Cambrian rocks and Grenville granulites from the Ayer's Cliff, Quebec... Geology (1989)
#MinCup25 #Quebec #Appalachians -
Look “space green” kosmochlor may be of meteorite origin and occasionally carved as it’s associated with jadeite, but blue kyanite definitely gets the arts vote for jewelry and use in porcelain and pottery glazes. Plus is gets physics points as an index mineral. #MinCup25
Vote for kyanite here: https://www.mineralcup.org/2025/vote/r3m03
-
#MinCup25 Quarterfinals 3: It's a showdown between Team Green and Team Blue for #kosmochlor vs #kyanite.
Vote: https://www.mineralcup.org/2025/vote/r3m03
Results: https://www.mineralcup.org/2025/results/r3m03 -
#MinCup25 Round 2 Match 7: It's high-pressure #kyanite against deep-space #taenite.
Vote: https://www.mineralcup.org/2025/vote/r2m07
Results: https://www.mineralcup.org/2025/results/r2m07 -
-
The organizers of #MinCup25 are very clever. Today and yesterday feature three aluminosilicates that are compositionally co-linear!
Diagram from Barton (1982), published in the American Mineralogist.
#kyanite #topaz #zunyite #aluminosilicate #MineralSocAmerica #ArgillicAlteration
-
#MinCup25 Round 1 Match 13: It's a battle of high-pressure colourful beauties of #topaz vs #kyanite. Which can stand the heat of round 1?
Vote: https://www.mineralcup.org/2025/vote/r1m13
Results: https://www.mineralcup.org/2025/results/r1m13 -
Crystals won’t help your chakras, but #zunyite wonderous little stars will certainly make you smile :) #MinCup25
RE: https://bsky.app/profile/did:plc:efs523olver6h4eait3togjq/post/3lyn4xfeod22y -
Twinkle, twinkle little #zunyite stars! #MinCup25
RE: https://bsky.app/profile/did:plc:yj6sgwsok5dex56a4jq56xso/post/3lylwrbjrmc26 -
#MinCup25 Round 1 Match 12: It's the visually-unmistakable #zunyite vs the physically funky #molybdenite.
Vote: https://www.mineralcup.org/2025/vote/r1m12
Results: https://www.mineralcup.org/2025/results/r1m12 -
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.
