#mincup24 — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #mincup24, aggregated by home.social.
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Repost from Adriana Guatame
(@adriguatame.bsky.social):
With #kyanite I always remember this video created by Stacey Phillips via the Mineralogical Society (the LEGO stop motion science videos) -
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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⚒️🧪 geology
Congratulations #dioptase! Your Queenly emerald glow has outshone the Lady of Darkness’ gothic vibes. Farewell #vivianite. May you return from your underworld of darkness to rally your fans next year.
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#MinCup24 R2M4: #Dioptase versus #Vivianite
Dioptase is rare and has glorious emerald to teal-green vitreous and translucent crystals. Vivianite can grow on decaying wood, bones and other organic material, much to gothic delight.
If this match feels familiar, we saw this same battle in Round 2 Match 3 of Mineral Cup 2023. But every year are new voters with new motivations! Which will you choose this year?
VOTE: https://www.mineralcup.org/2024/vote/r2m4
⚒️🧪 geology
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#MinCup24 R2M3: #Howlite versus #Stibnite
Howlite is an opaque bone-white mineral marbled with black veins and a massive habit that earns it the nickname “white tourquise.” Soft, dark stibnite has a flare for the dramatic as kohl, an eyeliner used starting in 3000 BCE.
VOTE: https://www.mineralcup.org/2024/vote/r2m3
⚒️🧪 geology
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#Ringwoodite is a second chance for #Spinel (which lost out to #Vivianite earlier). Ringwoodite has the chemistry of olivine (Mg2SiO4) but the crystal structure of spinel (MgAl2O4).
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#MinCup24 Round 1 Match 8: #Spinel vs #Vivianite
Spinel makes gems and has some interesting geophysical stories to tell but I have to give the art vote to Vivianite -a pigment in the gorgeous blues of the Pacific NW peoples (including Tshimshian & Haida) & some European medieval, through 18th century paintings, Māori tattoos, Wiru masks from PNG.
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#Whewellite is currently leading #Howlite by 20 votes.
Which of these two #MinCup24 newcomers will make it through to the next round? You have just under six and a half hours to recruit, campaign and vote!VOTE: https://www.mineralcup.org/2024/vote/r1m06
RESULTS: https://www.mineralcup.org/2024/results/r1m06 -
This is an interesting matchup because #howlite is considered a basic of rock collecting - in the massive form, anyway. I would now commit blood sacrifices for an teeny crystal form howlite. (Look, mindat's picture was pretty and then I noticed it had a scale and the specimen is so SMOLLLLL.)
But #whewellite is ... I'm not sure I understand the science right but a hydrated acid salt? That interestingly seems to make it being an oxalate less alarming than if it was oxalic acid... that detour aside!, it got my vote just because it got me more curious about it. And made me look up more things.
Besides, the fact that scientifically, "salt" is more than just Na tickles me as someone who regularly downs loads of Na (gotta love that dysautonomic life). 😂
via @MineralCup
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#MinCup24 ROUND 1 MATCH 5:
It’s time to get spooky with #Howlite’s bone-like appearance and #Whewellite’s hidden origins! It's a pair of newcomers to the cup with lots for you to uncover.VOTE: https://mineralcup.org/2024/vote/r1m05
RESULTS: https://mineralcup.org/2024/results/r1m05 -
Vivianite! Phosphate bones plus dissolved iron equals blue #Vivianite.
https://www.alaskasnewssource.com/2023/10/28/rare-blue-tusked-mammoth-auction-anchorage/