Claudia Zahn#Cavansite with #Stilbite - Wagholi Quarries, Maharashtra, #India - 6.2cm
Photo ©️ Mineral Masterpiece
By #GeologyWonders
#Geology #GeologyPage #Nature #Minerals #Crystals #Gems #Nature #NatureLovers #NaturePhotography #Photographer #RockPorn
Awesome #Calcite with #Cavansite from Wagholi, Pune District, Maharashtra, #India
Photo: Spirifer Minerals
By #GeologyWonders
#Geology #GeologyPage #Nature #minerals #crystals #gems #Nature #NatureLovers #NaturePhotography #Photographer #RockPorn
Mineral Cup & Ore Cup#Vivianite is leading #Cavansite in Round 1 Match 7 of #MinCup23
Just less than 15 minutes to campaign, argue, persuade and vote!
Vote here: https://www.mineralcup.org/2023/campaigns/round-1-match-7
Results here: https://www.mineralcup.org/results/round-1-match-7
Just less than 15 minutes to campaign, argue, persuade and vote!
Vote here: https://www.mineralcup.org/2023/campaigns/round-1-match-7
Results here: https://www.mineralcup.org/results/round-1-match-7
Round 1 Match 7 — Mineral Cup
Ready for a pair of rare and delicate beauties? Spooky Vivianite darkens when exposed to air while brilliant blue Cavansite owes its unusual hue to vanadium. Both minerals are utterly unmistakable, but only one will continue to the next round. Which will it be?
Zeolith 
Today I went with #Vivianite over #Cavansite for #MinCup23, notably because 1) have you seen that green (next bracket might be a tough choice, as it is pitted against dioptase...) and 2) just found that it was use as a green pigment by Vermeer (thanks @minouette for the information), and that's kind of my current hyperfixation, so...
Laura Smith-Petersen#MineralCup2023 Today's matchup is a no-brainer for me. #Cavansite has a silly name and is the color of toilet bowl cleaner. #Vivianite grows on dead bodies. DEAD BODIES. How can you beat that?
Vicky VeritasThe Deccan Traps voluminous eruptions 66 million years ago, so large they caused an extinction event, are why the best #cavansite in the world is found in India. #MinCup23
Know Your City: Cavansite, a rare turquoise-hued mineral unique to Pune
Pune: “If you go to any museum in the world and they have Cavansite, it has to be from Pune. It is a greatly prized mineral because it is so rare,” says Muhammad Fasihuddin Makki, a city-based mineral collector.
GeologistsCat@MineralCup Today in the #MinCup23 duell between #Vivanite against #Cavansite my vote goes to Vivanite. I didn't know of this #minerals before & must admit that I decided based on the pictures I found in the internet...
My vote goes to #cavansite today. Its name is derived from the calcium, vanadium, and silica it contains, & its color is a vibrant & stable blue that you can display on a shelf (unlike its competitor). This is a stalactite from India, which is pretty darn cool, too. #MinCup23
Kerstin Neuhaus#Cavansite is also blue and contains crystal water, but it is a silicate with the chemical composition Ca[V(+IV)O|Si4O10] · 4H2O. The name comes from the calcium and vanadium cations it contains. Isn't it beautiful?
I am all about learning new things and also I have to deal with V-containing materials at work quite a lot, hence my vote goes to #Cavansite.
📷 Parent Géry
InoruHmmm. #vivianite vs #cavansite is not a very chaotic matchup at all - they're both very pretty and fairly rare, the latter moreso than the former, but not very chaotic.
Cavansite owes its gorgeous blue to vanadium, but it's too rare to be a common ore, so it's more usually a collector's mineral. And vanadium isn't really much fuss until you process it, as far as I can tell; just exercise a little common sense in handling, per most minerals. (c) #MinCup23