Mastodawn

Inoru Sep 2, 2025

Hmmmmm.... I like how fluffy #okenite is - also fun fact: it turns gelatinous in HCl! (The things you learn from reading the whole #mindat page, lol. [Side note does Mindat have an @ over here?]) I think that would be fun to poke under a fume hood. (Alas I don't have any okenite or access to a fume hood.)

But I think I'm gonna go with #stibnite - kohl has been important for thousands of years, after all; plus, antimony has loads of uses both modern and ancient, iirc. (Don't ask me to name any right now lol. Migraine brain says mmm rocks.) And, stibnite *is* closely associated with arsenic - very similar symptoms if you ingest it, actually.

One wonders if using kohl was also poisoning oneself.... 🤔

#MineralCup #MinCup #MinCup25

via @MineralCup

https://mastodon.social/@MineralCup/115131871773211684

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Bob McMeeking Sep 1, 2025

@MineralCup
I used to put up a page to follow the Mineral Cup with links to the crystal structures and details in #Mindat. But I have been reined in recently
https://cds.dl.ac.uk/cgi-bin/cw_page/examples_mincup23.html
You can see many of this years entries via the CrystalWorks link to the #365Minerals collection.
https://cds.dl.ac.uk/cgi-bin/cw_page/examples_rocks.html
I have decided to kick against the pricks and cobbled together a new page with reduced functionality
https://cds.dl.ac.uk/cgi-bin/rfm/crystalworks_trawl_new?8850_3368_5146
Entries not in #365Minerals are flagged with "X"

#MinCup25

MinCup2023

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Bob McMeeking May 15, 2025

@FaithfullJohn @SusiArnott

The #365Minerals entry for today (15th May) is Mullite. A structure with lots of disorder (positional and substitutional). To check out details go to CrystalWorks. There is also a link to Mullite in #Mindat.

https://cds.dl.ac.uk/cgi-bin/cw_page/examples_rocks.html

All the #365Minerals entries are taken from the Entry a Day series posted on Twitter by Nadine Gabriel. Nadine (for very understandable reasons) has virtually abandoned that platform, and sadly she has deleted the #365Minerals series.

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Bob McMeeking May 2, 2025

Haven't been following closely, but the #Mindat site is back

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Bob McMeeking May 2, 2025

Just when you need a bit if innocent diversion it appears that the #Mindat site is down...

Bob McMeeking Feb 26, 2025

The #365Minerals entry for 26th February is Scolecite.

To check it out in CrystalWorks follow the link: https://cds.dl.ac.uk/cgi-bin/cw_page/examples_rocks.html

Scolecite is classified as a Natrolite Zeolite in #Mindat: https://www.mindat.org/min-3594.html

It is a calcium aluminosilicate. The Ca coordination has been set to zero for clarity in the structure displayed

365Minerals

John Faithfull 🌍🇪🇺🏴󠁧󠁢󠁳󠁣󠁴󠁿🧡✊🏻✊🏿Aug 14, 2024

Mindat has a great report on the Museums + Mineralogy 10 Conference which took place on Monday + Tuesday in Cardiff: https://www.mindat.org/article.php/4953/Mineralogy+and+Museums+10+-+Cardiff%2C+UK.+11+-+13+August+2024. Disclaimer: I was a speaker via Zoom from Mull. #Mineralogy #Museums #Geology #Mindat

Mineralogy and Museums 10 - Cardiff, UK. 11 - 13 August 2024.

I have just returned from a most enjoyable couple of days at the Mineralogy and Museums 10 conference in Cardiff. We were greeted by warm weather and sunshine upon arrival and everyone had a great ...