As some of us in Aus settle in for the Grand Final, as a Hawthorn fan I'm more focused on the Quarter Final of #MinCup26. From a crystal structure view battle of octahedra coordination within #Skutterudite vs tetrahedral coordination within #Quartz. Tough call today, but #Quartz gets the call.

I second that motion! #Quartz #MinCup26
#TeamQuartz

I still think #Quartz should win #MinCup26! Yogev-Einot and Avnir show that its structure is not simply right- or left-handed: T and P change the symmetry, helicity and degree of chirality of its SiO₄-based building blocks. More in @actacrystb.iucr.org: journals.iucr.org/paper?bk0144=

I probably don't have to tell you to vote for #quartz #MinCup26

This was really a tough decision but I am team #Quartz

I have no idea why I can’t vote for #Quartz, I wanted to, but no, I voted for #Skutterudite. Quartz isn’t even a ‘boring’ mineral, I just don’t want it to win, I guess.

#MinCup26 Quarterfinal 2
Both of today's minerals can be found in hydrothermal vein deposits as cobalt arsenide #Skutterudite is against classic silicate #Quartz for a spot in the semi-finals.

Vote: www.mineralcup.org/2026/vote-re...
Results: www.mineralcup.org/2026/vote-re...

VesselAlert Vaixell
Nom del Vaixell: QUARTZ
MMSI: 256392000
Indicatiu: 9HA3900
Tipus: Cisterna Perill cat A
Bandera: Malta
Vist a: 25-Sep-2026 20:11:40 CEST
Estat: en marxa usant motor
Velocitat: 11.9 kts
Direcció: 265 deg
Destinació: ESALG
Distància: 207.5 nm
Senyal RSSI: -16.5 dBFS
Vaixell AIS

VesselAlert Vaixell
Nom del Vaixell: QUARTZ
MMSI: 256392000
Indicatiu: 9HA3900
Tipus: Cisterna Perill cat A
Bandera: Malta
Vist a: 25-Sep-2026 14:52:28 CEST
Estat: en marxa usant motor
Velocitat: 11.3 kts
Direcció: 253 deg
Destinació: CEUTA OPL
Distància: 221.2 nm
Senyal RSSI: -19.2 dBFS
Vaixell

Also I believe that when they find out who did it...they should be banned from participating. As in the case of #Quartz
#MinCup26

To the untrained eye, they both look clear, bright, and luminous.

But as someone who works with gemstones every day, I can tell you the difference between glass and quartz.

You can, too 👇🏼
https://www.hermj.com/quartz-vs-glass/

#jewelry #gems #quartz #art #design #hermj

Bit late to today's #MinCup26 party - but no contest for my vote. #Stichtite has layers (like an onion, like an ogre) and is full of interesting structural points. #Quartz is just... well Quartz, nothing doing here.

The problem with running a #MinCup26 competition at your library is sometimes you have to enter a vote contrary to what you want. I just put in my patrons' choice of #Stichtite, effectively canceling out my own vote for #Quartz. Bah humbug. (But really, I am delighted that patrons are engaging!)