#Mannardite
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salvaterra.bsky.social
An in the last pages of the #MinCup25 sketchbook, paddlewheelite X mannardite.

Going with mannardite. What a bold mineral.

#minerals #sciart #sketchbook #b&wart
sketchbook page photo with the black and white pen drawings of paddlewheelite and mannardite tiny minerals. a pen rests upon the page.
September 16, 2025 at 2:11 PM
mineralcup.bsky.social
#MinCup25 Round 1 Match 16 - It's a battle of the tiny as bright green #paddlewheelite goes up against jet black #mannardite. Both are small yet mighty minerals, but only one can win!

Vote: www.mineralcup.org/2025/vote/r1...
Results: www.mineralcup.org/2025/results...
Vote in Round 1 Match 16 — Mineral Cup
Click here to vote in Paddlewheelite vs Mannardite Photo credits: Travis Olds and Matteo Chinellato
www.mineralcup.org
September 16, 2025 at 12:10 AM
mineralcup.bsky.social
#MinCup25 Round 2 Match 8: Bright green radioactive #cuprosklodowskite is up against jet black phantom #mannardite.

Vote: www.mineralcup.org/2025/vote/r2...
Results: www.mineralcup.org/2025/results...
Vote in Round 2 Match 8 — Mineral Cup
Click here to vote in Cuprosklodowskite vs Mannardite Photo credits: Harold Moritz and Domenico Preite
www.mineralcup.org
September 24, 2025 at 12:07 AM
salvaterra.bsky.social
Round 2 Match 8: cuprosklodowskite X mannardite.

I'm sorry mannardite you are awesome but I HAVE to take the absurd green explosion home.

#MinCup25 #minerals #sciart
Illustration of two minerals competing in the round 2 match 7 of the Mineral Cup 2025. cuprosklodowskite versus mannardite. The first is a mess of tiny green blades embedded on a rock. The second is a bold black crystal.
September 24, 2025 at 1:14 PM
corgiseveryhour.bsky.social
Sparkling jet black #Mannardite is easily overlooked with its tiny crystals, but has a big impact. This barium-titanium-vanadium oxide can be common enough within some black shales to be a vanadium ore. When encased within clear quartz, mannardite forms striking black phantoms.
Absolutely striking!
Mannardite encased in a palm sized pyramid of quartz. The encased mannardite looks like soot sprites from the Spirited Away movie. Small round nodules of mannardite with spikes emanating from them in a milky clear background A mannardite nodule in a pyramidal cone sticking up from a clear quartz base with spikes of mannardite from left to right. Another extreme closure of mannardite pyramidal cone sticking at a 45 degree angle with a quartz base Twin barrels of mannardite on clear quartz with a 3rd barrel growing at the bottom left.
September 16, 2025 at 4:21 PM
martinhajovsky.bsky.social
Also, with all the greens and blues in the second round of #MinCup25 already, jet black #Mannardite reminds me of the Spinal Tap album cover:

“There's something about this that's so black, it's like how much more black could this be? And the answer is none. None more black.”
Mannardite. None more black. Mannardite. None more black. Spinal Tap “Smell the Glove” album cover. None more black.
September 16, 2025 at 3:17 AM
glacierpique.bsky.social
Why is V so concentrated in crude oil and oil shales?

Anoxic waters, H2S reduction, formation of porphyrin complexes, precipitation, clay adsorption, shale deposition, mineralization.

Tiny, V-rich #Mannardite punches above its weight.
#MinCup25
#Porphyrins
Prism of black Mannardite contrast with white matrix. Image from mindat’s website, copyright Alessio Becucci Silver prism of Mannardite contrasts with white matrix. Image from mindat’s website, copyright Chinellato Matteo
September 16, 2025 at 1:55 AM
bowtiediene.bsky.social
Mannardite has a fun polarization simulation on www.mindat.org/min-2567.html. Also it contains vanadium. #MinCup25
A polarization simulation of Mannardite showing colorful grains.
September 16, 2025 at 1:56 AM
adriguatame.bsky.social
Looking forward to learn about cuprosklodowskite, haüyne, jeremejevite, kosmochlor, mannardite, paddlewheelite, thortveitite (I would not even know how to pronounce those names!)
August 30, 2025 at 1:59 AM
glacierpique.bsky.social
#Mannardite does not give up the ocean’s secrets without a fight. Complex, multivalent ions concentrate V, Ba, and Ti in tiny crystals in fine-grained shales.
#MinCup25

See “Mannardite as the main vanadium-hosting mineral in black shale-hosted vanadium deposits, South China” by Yang, et. al. 2003.
Row of tiny black prisms of Mannardite stand on a matrix of quartz grains. Image from mindat’s website. Gianfranco Ciccolini author of the photo. A complex mineral formula with superscripts and subscripts for multivalent V3+, V4+, and Fe3+ ions. Shiny prism of black Mannardite with silver needles of Zinkenite on clear quartz matrix. Image from mindat’s website, copyright by Matteo Chinellato
September 24, 2025 at 12:26 PM
elysiamacht.bsky.social
Mannardite inside quartz, with celsian. "Black phantoms". Mysterious, hazy, and people mistaking it for ankangite. #Mannardite is so black-metal-goth-vote that Ankangite got discredited. Gone. Poof.

Only M. remains. 🤘😎

ALTs relevant to contain the dark universes from spreading! ⚫🌌💥😱

#MinCup25
Mannardite from Brazil. A 3.4 cm tall polished Quartz with a “sea urchin” of black mannardite floating inside. It's as if an animated character was caught in the middle of how it may look when very angry perhaps, or the aggro emojis or such. Most of all, a black, black, black region in the middle that looks like a hole had broken into another universe inside. A glimpse of the other side's stars and galaxies are just barely visible when staring into the black opening inside the clear quartz. It looks as if the opening had exploded open from that side, the wisps or strands of black forming all around the centre, towards us. Links for image sites or texts in a post below this. MCV-Quartz with Mannardite and Celsian Gemstone. A somewhat raindrop shaped see-through clear gemstone with thin wispy strands of hazy black and tiny tiny white bursts inside it. It's been formed + polished into shape or whatever all done to get it looking that shape. The same raindrop or teardrop shape quartz piece with the black mannardite inside it. Here it's seen from the other side, where you see more of the black heart of it. It's as if the first photo's hole into another universe was only starting to spread here, a smaller glimpse into the black on the other side beyond the opening. As if it was only through luck the quartz was containing the might of mannardite, existing for the black to spread, for a bigger glimpse into the black of the other side in miniature form. The thing on its side here may also look somewhat like the clear crystalline eye of some beast beyond our ken. A less translucent, more white looking quartz with mannardite from Madagascar-4.85ct. This time the stone itself is a white egg, described as oval + cabochon if such terms say anything to you. But there is a crack and a widening hole on top/side of the egg-resembling stone, and again the black of mannardite is breaking out of its containment. Just with a different looking effect given it now seems as if something was breaking out of an egg. From a gemfrance auction site, so gone already.
September 16, 2025 at 4:39 AM
saavikford.bsky.social
Am I understanding the MinDat page on #Mannardite correctly, that it occurs in Hadean crust rocks? Bc if so, that’s a pretty good argument for it?
September 16, 2025 at 12:45 AM
minouette.bsky.social
Some will favour the odd metaphor in the name paddlewheelite, but for sentimental reasons I vote mannardite which honours Dr. George William Mannard (1932-1982), Canadian exploration geologist & mining executive, president of Texasgulf Canada then Kidd Creek Mines where my Dad worked 🧵 #MinCup25 🧵
Paddlewheelite Bright green crystals in Klement vein, Svornost Mine, Jáchymov, Karlovy Vary District, Karlovy Vary Region, Czech Republic via https://www.mindat.org/min-52712.html Ankangite & Celsian in Quartz / Quartz with Mannardite Transparent cut rounded triangle cabochon held by needle-nose pliers with silvery-black lines of inclusions via https://gemologicalcollections.com/product/ankangite-celsian-in-quartz-quartz-with-mannardite-5-72-trillion-cabochon-12-1-x12-3-x-6-mm-y98291/
September 16, 2025 at 1:06 PM
salvaterra.bsky.social
The minerals eliminated in the second round of the #MinCup25

#minerals #sciart
a poster with illustrations of 8 minerals eliminated in the second round of the 2025 mineral cup: pectolite, stibnite, baryte, carpathite, titanite, molybdenite, taenite, mannardite They have a colour variation from greys, beiges, whites and black. One, titanite, is dark green.
September 26, 2025 at 1:14 PM
maiainmi.bsky.social
Sorry, #mannardite, but how could I not vote for a mineral named #paddlewheelite? #MinCup25
September 16, 2025 at 10:37 AM
bowtiediene.bsky.social
Sure it's easy to vote for a bright green, radioactive mineral. But mannardite has vanadium, which is a very cool element. Also, have I mentioned the fun optics of mannardite grains? That's WAY more colors than just green. #MinCup25
Simulation of mannardite grains as seen from a polarization microscope.
September 24, 2025 at 1:03 AM
karidru.bsky.social
You gotta love something called paddlewheelite, and also you gotta love when radioactive stuff is ACTUALLY luminous green, but I went with mannardite for being so shiny, black, and gothy. And for making phantoms in quartz cuz I love that.
September 16, 2025 at 3:42 AM
saavikford.bsky.social
#Mannardite is the little goth rock who could! Jet black & found in the oldest terrestrial rocks, Hadean era crust!

This is the last bout of Round 1 so step up to vote & be counted!

#MinCup25
September 16, 2025 at 1:40 AM
lesuper.bsky.uy
El último juego de la 1era ronda de #MinCup25 es entre dos desconocidos sin siquiera página de Wikipedia en español por lo que van en inglés: #Paddlewheelite un carbonato de uranio complejo radiactivo vs #Mannardite un sulfato muy raro

Votá: www.mineralcup.org/2025/vote/r1...

Yo voté #Mannardite
September 16, 2025 at 12:55 AM
mikekling9.bsky.social
My Master many years ago was about a black shale hosted ore mineralization!

Vote #mannardite
September 16, 2025 at 5:08 PM
obialik.bsky.social
Ready? I'm not, but it's almost here, #MinCup25! ⚒️
(naturally, #TeamCalcite)
Blank Bracket for MinCup25 listing Calcite Dioptase Kyanite Perovskite Stibnite Titanite Topaz Wavellite Baryte Molybdenite Azurite Carpathite Chrysotile Cuprosklodowskite Haüyne Hematite Ikaite Jeremejevite Kosmochlor Leucite Mannardite Nontronite Okenite Paddlewheelite Pectolite Pollucite Sanidine Silver Taenite Thortveitite Tugtupite Zunyit
August 29, 2025 at 5:17 PM
yirara-bah.bsky.social
#paddlewheelite has such a cute name. But then I saw this imagine www.reddit.com/r/Damnthatsi... and I knew which one to chose as the decision between cute name and cute mineral is easily decided 🕷️ Team #Mannardite it is.
From the Damnthatsinteresting community on Reddit: Quartz crystal with Mannardite phantom inside, an Urchin Quartz!
Explore this post and more from the Damnthatsinteresting community
www.reddit.com
September 16, 2025 at 9:21 AM
minouette.bsky.social
young to remember if Mannard was one of the geologists I met but he nonetheless impacted my family’s lives, and I am voting for Mannardite.
September 16, 2025 at 1:09 PM
eos.org
#Mannardite crystals encased in quartz sometimes look like spooky little black sea urchins, creating specimens called—you guessed it—urchin quartz. It’s our choice in the final 1st-round matchup of #MinCup25.
September 16, 2025 at 5:22 PM
martinhajovsky.bsky.social
Holy shamoley! 1,419 votes were cast and #Mannardite the Dark wins by one vote over #Paddlewheelite to close out Round One of #MinCup25. #EveryVoteCounts
September 17, 2025 at 12:40 AM