We use cookies to show content based on your preferences. If you continue to browse you accept their use and installation. More information. >

FMF - Friends of Minerals Forum, discussion and message board
The place to share your mineralogical experiences


Spanish message board






Newest topics and users posts
23 Sep-12:13:13 Will barite save the world? (Bob Kerr)
23 Sep-12:04:31 Re: possibilty of adding/publishing a pdf file to the forum? (Tobi)
23 Sep-10:55:10 Re: possibilty of adding/publishing a pdf file to the forum? (Jordi Fabre)
23 Sep-10:44:49 Possibilty of adding/publishing a pdf file to the forum? (Tobi)
23 Sep-10:27:51 Re: a tri-state galena and calcite (Rgangue)
23 Sep-07:07:50 Re: a tri-state galena and calcite (Edelmin)
23 Sep-04:26:34 Re: collection of volkmar stingl (Volkmar Stingl)
22 Sep-19:37:22 Re: a tri-state galena and calcite (John Hodgson)
22 Sep-17:04:03 The mizunaka collection - fluorite (Am Mizunaka)
22 Sep-15:23:18 Re: collection of sante celiberti (Sante Celiberti)
22 Sep-12:56:04 Re: a mineralogical trip through the states of usa - indiana (R Saunders)
22 Sep-11:24:13 Re: a tri-state galena and calcite (Rgangue)
22 Sep-10:56:01 Re: a tri-state galena and calcite (R Saunders)
22 Sep-10:21:58 Re: northern ireland, ireland collecting sites (Rgangue)
22 Sep-10:18:31 Re: a tri-state galena and calcite (Rgangue)
22 Sep-09:43:12 Re: a tri-state galena and calcite (R Saunders)
22 Sep-09:12:01 Re: a mineralogical trip through the states of usa - indiana (R Saunders)
22 Sep-08:22:04 Re: collection of david carter (David916)
22 Sep-04:50:48 Re: very nice amethyst in the railroad works in north of spain (Heat)
22 Sep-04:11:45 Re: collection of volkmar stingl (Volkmar Stingl)
22 Sep-03:22:44 Re: very nice amethyst in the railroad works in north of spain (Hans Cremers)
22 Sep-03:11:53 Re: quartz and epidote with possible hedenbergite from imilchil, morocco (Sante Celiberti)
21 Sep-16:58:02 Quartz and epidote with possible hedenbergite from imilchil, morocco (Adam)
21 Sep-14:00:15 Re: very nice amethyst in the railroad works in north of spain (James Catmur)
21 Sep-13:57:11 Re: very nice amethyst in the railroad works in north of spain (James Catmur)

For lists of newest topics and postings click here


RSS RSS

View unanswered posts

Why and how to register

Index Index
 FAQFAQ RegisterRegister  Log inLog in
 {Forgotten your password?}Forgotten your password?  

Like
84843


The time now is Sep 23, 2021 13:28

Search for a textSearch for a text   

A general guide for using the Forum with some rules and tips
The information provided within this Forum about localities is only given to allow reference to them. Any visit to any of the localities requires you to obtain full permission and relevant information prior to your visit. FMF is strictly against any illicit activities related to collecting minerals.
Stay at home - Coronavirus / Covid-19
  Goto page Previous  1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19
  Index -> National Library of Spain / Biblioteca Nacional de España (BNE) and FMF
Like
974


View previous topic :: View next topic  
Author Message

Don Lum




Joined: 03 Sep 2012
Posts: 2457
Location: Arkansas


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Aug 01, 2021 14:31    Post subject: Re: Stay at home - Coronavirus / Covid-19  

Here is an interesting article:

https://centerforfoodsafety.org/blog/6201/know-the-health-risks-before-investing-in-an-antimicrobial-nano-silver-mask-and-what-to-buy-instead
(link normalized by FMF)

_________________
hogwild
Back to top
Reply to topic Reply with quote
Like
   

Peter Lemkin




Joined: 18 Nov 2016
Posts: 350
Location: Prague

View user's profile

Send private message

PostPosted: Aug 02, 2021 00:58    Post subject: Re: Stay at home - Coronavirus / Covid-19  

It looks as if Jordi or some Administrator has moved this to the old 'Covid-19 thread'. I was wondering if someone in Administration was going to point out 'what does this have to do with minerals or the topic of the Forum?'. So, while one could argue ALL have to deal with the virus of the year [and next; and last year], by chance yesterday I came across the interesting fact that many viruses form crystals that look just like the crystals we know and love. Just put 'crystals' and 'virus' into a search engine and I'm sure you will find some. They tend to be small and have to be in liquid [the ones I saw - andI have never heard of one that can be dry and 'freestanding', but perhaps they exist too]. No word yet if anyone had made a crystal of Covid-19. If they do, I don't want one in my collection, thank you. The most beautiful and famous is perhaps the TMV (tobacco mozaic virus) crystals. Another reminder that they are very strange and basically non-living things which INSIDE of living things can act as directors of living cells and systems. They are more akin to just coded RNA (a few are DNA) with some protective proteins. No cells and no organelles. The 'undead' for sure......and perhaps the first visitors from space, but that has not been proven yet.

I did look into the matter of charged particle generators and the matter seems NOT to have been researched by serious researchers very much. What research does exist seems to be very mixed as to whether they [and the problem is there are MANY different types, that charge the particles in different ways and with different charges] help viruses tend to quickly settle on inanimate objects [walls, flooring, furniture, etc.] or allow it to stay in the air. A slight trend toward the former from what I read of the more standard types sold on the big internet sites.

A Czech spin-off of the company that went belly-up with the nano-Ag masks is now making a sheet of fiber to sell to mask makers and other health product producers that is both impermeable to viruses of the size of Covid and contains nano-Ag....in case you want to sew your own or start your own mask company. I don't think it will generally be available unless some Chinese company takes it on. It is certainly a GREAT idea and the only downside is that nano-Ag is harmful to the environment and must be disposed of as one does electronics [for exclusion from the waste chain and to be recycled].

I do think this general matter will affect mineral shows in the coming years. I think more and more shows will go ahead, but with Covid precautions of distancing, masking and some kind of proof of vaccination or recent negative test, etc. With a mask on I'd go to any show I know doesn't get to shoulder-to-shoulder situations [which means most Czech shows sadly will not be possible, unless they put them in larger spaces - unlikely]. They tend to be very well attended in small spaces with very poor ventilation for the attendance numbers, and in years past one would sometimes literally have to push past many others to move along the displays [i.e., social distance = 0!; sheep herd factor = 100%]

We in the developed nations are better off, but with 30-50% vaccination hesitancy even in developed nations and most nations at 0-5% vaccination now, we ALL are in bad shape, even if vaccinated when the varients worse than 'Delta' come - and they will!. The only answer is to get everyone on the Planet vaccinated as soon as possible! It is already very late in the day to do this now and I see no such effort ongoing...only moving lips. The usual from politicians everywhere. The recent trend to anti-science and the 'financial ends justify the means' attitude for the short-term on everything is frightening, even if I 'understand it', in part. It along with the virus and ones to follow soon are the enemy.
Back to top
Reply to topic Reply with quote
Like
   

Roger Warin




Joined: 23 Jan 2013
Posts: 1008


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Aug 02, 2021 10:20    Post subject: Re: Stay at home - Coronavirus / Covid-19  

Hello,

"What does virus have to do with minerals or the topic of the Forum?" Maybe…'
Since this virus is presented to us as spherulites, it is not forbidden to believe that it is possible to crystallize (or to organize) such a virus.
But it wouldn't be a real crystal, but a semi-crystalline object.
This would perhaps be possible if this assembly is in the form of a semi-crystalline polymer.

A semi-crystalline polymer has crystalline areas (usually in the form of spherulites) and amorphous areas.
Thus there is a local folding of the linear chains, which allows the appearance of lamellae made up of cubic, orthorhombic or hexagonal unit cells.
I do not have experience in this area.

However, I observed in a thin section of luxullianite some Maltese crosses typical of the extinction of semi-crystalline polymers.
LUXULLIANITE THIN SECTIONS:
The granite rock of Luxulyan (UK) could only produce superb pics, surprising in more ways than one. This granite, which has undergone deep metasomatism, shows orthose phenocrysts and fibroradiated tourmaline spherulites. The birefringence of tourmaline (~ 0.03) gives second order hues under cross-polarized light. The aesthetic effect is surprising.
But it also appears, an optical phenomenon rarely observed in petrology, the presence of extinction crosses correlated with the existence of these spherulites. The position of these crosses is independent of the rotation of the microscope stage, which clearly proves their exceptional character.
But this is only my opinion.

If you want I can present a separate post on luxullianite (UK). It is the granite from the tomb of the Duke of Wellington at St Paul's Cathedral (London).
Roger.



Luxullianite#1-02_R.jpg
 Mineral: Tourmaline
 Locality:
Luxulyan (Luxullian), St Austell District, Cornwall, England / United Kingdom
 Description:
in granite
 Viewed:  597 Time(s)

Luxullianite#1-02_R.jpg



Luxullianite#1-03_R.jpg
 Mineral: Tourmaline
 Locality:
Luxulyan (Luxullian), St Austell District, Cornwall, England / United Kingdom
 Description:
in granite
 Viewed:  600 Time(s)

Luxullianite#1-03_R.jpg



Luxullianite#1-06_R.jpg
 Mineral: Tourmaline
 Locality:
Luxulyan (Luxullian), St Austell District, Cornwall, England / United Kingdom
 Description:
 Viewed:  597 Time(s)

Luxullianite#1-06_R.jpg



Luxullianite#1-12_R.jpg
 Mineral: Tourmaline
 Locality:
Luxulyan (Luxullian), St Austell District, Cornwall, England / United Kingdom
 Description:
granite part
 Viewed:  597 Time(s)

Luxullianite#1-12_R.jpg



Luxullianite#1-15_R.jpg
 Mineral: Tourmaline
 Locality:
Luxulyan (Luxullian), St Austell District, Cornwall, England / United Kingdom
 Description:
mixing
 Viewed:  600 Time(s)

Luxullianite#1-15_R.jpg


Back to top
Reply to topic Reply with quote
Like
2
   

Peter Lemkin




Joined: 18 Nov 2016
Posts: 350
Location: Prague

View user's profile

Send private message

PostPosted: Aug 03, 2021 07:01    Post subject: Re: Stay at home - Coronavirus / Covid-19  

They SELF-ORGANIZE as do mineral crystals! Here is an image of the TMV (tobacco mosaic virus) crystal - made up of MANY viri. The form of most viruses are crystal-like to begin with.


viral crystal1.jpeg
 Description:
 Viewed:  484 Time(s)

viral crystal1.jpeg


Back to top
Reply to topic Reply with quote
Like
3
   

Dany Mabillard




Joined: 01 Jul 2019
Posts: 234
Location: Valais


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Sep 12, 2021 06:49    Post subject: Re: Stay at home - Coronavirus / Covid-19  

Hello everybody !

Nature must be protected and sometimes needs a little help with a touch of fantasy. The last project we realized with my wife, The "Desesperados Hotel" for the insects, our important friends.

Have a nice and safe day.



20210912_132559.jpg
 Description:
 Viewed:  187 Time(s)

20210912_132559.jpg


Back to top
Reply to topic Reply with quote
Like
4
   
Display posts from previous:   
   Index -> National Library of Spain / Biblioteca Nacional de España (BNE) and FMF   All times are GMT - 5 Hours
Page 19 of 19
  Goto page Previous  1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19  

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


All pictures, text, design © Forum FMF 2006-2021


Powered by FMF