Hematite from England, the United Kingdom. Photo credit: John Sobolewski
Hematite victorious in its quarterfinal.
I love you blue #Hauyne and look forward to voting for you again in #MinCup26, but very happy for the triumph of #Hematite in this round of #MinCup25.
#Hauyne kicked out my favourite last round, which is reason enough to vote for #hematite. But I actually do love #hematite more as well. Thus easy choice.
haüyne crystals - blue embedded in surrounding minerals
hematite - almost black, smooth crystals with excellent facets.
The haüyne has my vote in this round. I have a weakness for blue, though the allure of #MartianBlueberries hematite is strong...
The pictures seemed to be missing from the original post, so I attached pics of #hauyne and #hematite to this post […]
[Original post on mastodon.cooleysekula.net]
Two mineral structures, sodalite on the left and tugupite on the right. Tugupite has beryllium in a tetrahedral site and five-fold coordinated sodium (large grey balls), not four-fold. From: Defects in sodalite‑group minerals determined from X‑ray‑induced luminescence. Adrian A. Finch, Henrik Friis, & Mufeed Maghrabi (2016) Phys Chem Minerals 43:481–491
#Tugtupite is our second sodalite-structure (after #Haüyne). FInch et al. (2016) investigated the sources of color from point defects, bonds, and coordination in the #sodalite cage structure.
Tugupite is different, due to the beryllium substitution by also […]
[Original post on fosstodon.org]
For the next round you should keep in mind that #hauyne has beautiful satellite reflections. I think reciprocal space beauty is an argument that should be taken into account here. @stecanossa.bsky.social
Such a beautiful blue color as that of #hauyne can’t be matched, even if crystals are usually very small.
If Paul Hollywood's eyes were made of gems, they'd be #hauyne blue, so it gets our vote today in #MinCup25 #GBBO 🧪 + 🍞 + 💙
The mineral hauyne from In den Dellen quarries, Niedermendig, Mendig, Laacher See volcanic complex, Eifel Mts, Rhineland-Palatinate, Germany Source: https://gemologyproject.com/wiki/index.php?title=Hauyne
The orange-pink fluorescence of hauyne illuminated by long-wave UV light. Source: https://gemologyproject.com/wiki/index.php?title=Hauyne
A description of #Haüyne fluorescence at: https://gemologyproject.com/wiki/index.php?title=Hauyne
These samples are found in a quarry near the Laacher See (Eifel Mts, Rhineland-Palatinate, Germany)
This crater was formed only ~13,000 years ago in an eruption […]
[Original post on fosstodon.org]
As of a minute ago, pectolite is losing to haüyne.
Maybe if they spelled it pectölite, it would be doing better.
#MinCup25 #pectolite #hauyne
So many spellings, so little time.
#hauyne is a gorgeous deep blue volcanic rock, known as Azure spar, and may have my vote yet!
bsky.app/profile/corg...
Its time for ROUND 2 OF #MINCUP25
EPIC BATTLE OF THE BLUES!
You have #Pectolite versus #hauyne
A rivalry between Robins egg blue of pectolite and the florescent dark blue of hauyne!
Reposts of pics and notes below!
Im on the fence on this one, but im leaning towards our volcanic flourescent #HAUYNE
Round 2 of #MinCup25 already! I'm sticking with #hauyne, because while #Pectolite seems awesome, I love the fact that most hauyne is found by amateur collectors instead of mined.
It is a great start for #Hauyne! Let us hope for this trend to continue for the rest of the day!
why is #pectolite doing so poorly? It's one of those minerals I can look up endlessly and get drawn in while #hauyne is just blue
Du trodde det var slutt med mineralmaset etter 32 kandidater i ringen? Nå begynner runde to i køppen og her handler det om HEVN. Jeg stemmer på hauyn i dag, som straff for at den andre var den som slo ut min favoritt asbesten i aller første match for over fjortendager siden.
#MinCup25
#Hauyne
Empieza la 2da ronda de #MinCup25 con el Match entre Pectolita #Pectolite y Haüyna #Hauyne. Cruce de azules para ver quien llega a cuartos de final.
Votá: www.mineralcup.org/2025/vote/r2...
Yo voy por Haüyna
Battle of the Blues!
I like the blues, it’s a great genre of music. As a fan of Sodalite , I’m Team #hauyne
💖 The round 2 matches are going to be just as brutal.......
Revenge vote against pectolite, so it's #hauyne for now.
#MinCup25 Round 2 Match 1: It's a pair of striking blue beauties as #pectolite the uncrushable faces off against #hauyne, the phoenix from volcanic ashes!
Vote: www.mineralcup.org/2025/vote/r2...
Results: www.mineralcup.org/2025/results...
#Hauyne got my vote here. Both are very cool. I like uses for my votes and jeremejevite was basically just a gem stone. Beautiful though. #Na3Ca(Si3Al3)O12(SO4) all the way.
www.mineralcollection.eu/product/1901...
#hauyne #mendig #fluorescentminerals #uvreactiveminerals #germanminerals #mineralsgermany #tektosilicates #silicates #minerals #rocks #crystals #stones
www.mineralcollection.eu/product/1790...
#hauyne #systematicminerals #indendellen #volcanicminerals #germanminerals #mineralsgermany
