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

Going with mannardite. What a bold mineral.

#minerals #sciart #sketchbook #b&wart
September 16, 2025 at 2:11 PM
#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
#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
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
September 24, 2025 at 1:14 PM
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!
September 16, 2025 at 4:21 PM
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.”
September 16, 2025 at 3:17 AM
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
September 16, 2025 at 1:55 AM
Mannardite has a fun polarization simulation on www.mindat.org/min-2567.html. Also it contains vanadium. #MinCup25
September 16, 2025 at 1:56 AM
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
#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.
September 24, 2025 at 12:26 PM
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
September 16, 2025 at 4:39 AM
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
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 🧵
September 16, 2025 at 1:06 PM
The minerals eliminated in the second round of the #MinCup25

#minerals #sciart
September 26, 2025 at 1:14 PM
Sorry, #mannardite, but how could I not vote for a mineral named #paddlewheelite? #MinCup25
September 16, 2025 at 10:37 AM
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
September 24, 2025 at 1:03 AM
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
#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
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
My Master many years ago was about a black shale hosted ore mineralization!

Vote #mannardite
September 16, 2025 at 5:08 PM
Ready? I'm not, but it's almost here, #MinCup25! ⚒️
(naturally, #TeamCalcite)
August 29, 2025 at 5:17 PM
#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
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
#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
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