Talk:Popigai impact structure

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Location from Norilsk[edit]

Where is Popi really from Norilsk? The page says it's 'just North' of the settlement, but Google Earth says it's over 500 of either one or t'other away from Norilsk. I'm aware that one, other or both could be wrong, so what's the truth? Lady BlahDeBlah (talk) 23:46, 1 March 2009 (UTC)[reply]

It is at +71° 39' 42.97", +110° 57' 39.59" I've added a link to Google Maps. 70.74.191.229 (talk) 05:22, 10 January 2014 (UTC)[reply]

Add Crater Infobox?[edit]

Someone may want to apply crater template {{Infobox crater | crater_name = {{SUBST:PAGENAME}} | image_crater = | alt_crater = | caption_crater = | image_bathymetry = | alt_bathymetry = | caption_bathymetry = | location = | coords = {{coord|89|59|59|N|179|59|59|W|region:ZZ_type:waterbody|display =inline,title}} | type = | basin_countries = | length = | width = | area = | depth = | max-depth = | volume = | rim = | elevation = | cities = | reference = }}

--YakbutterT (talk) 23:32, 18 February 2010 (UTC)[reply]

Trustworthyness of Sources[edit]

For a piece of news that will shock the diamond dealing world, there is only one source - the Christian Science monitor. This source is repeated all places online, and they are seemlingly the only ones that know about this. Can someone confirm this from more sources? — Preceding unsigned comment added by 193.9.0.125 (talk) 09:16, 18 September 2012 (UTC)[reply]

"twice as hard"[edit]

The article currently states the diamons at Popigai are "twice as hard" as normal and they contain lonsdaleite. Lonsdaleite has a hardness of 6-7 vs diamond at 10. I see the Russian source and various tabloids do say that, but seems such a claim requires a better source. The translated Russian source is hyping the story (is it a WP:RS?) and the tabloids follow along - any fact checking there? Vsmith (talk) 10:16, 18 September 2012 (UTC)[reply]

Seems a friendly ip has now modified the text and changed the twice as to 58% harder w/ a ref. Thanks, Vsmith (talk) 11:52, 18 September 2012 (UTC)[reply]

If you click the "lonsdaleite" link, the extreme hardness of pure lonsdaleite crystal is explained there. The 6-7 hardness you mention is because it is usually found with impurities that make it softer. There is no way to actually measure the hardness of the stuff found in the crater, because the usual hardness test of something is to scratch it with a diamond, and in this case you can't. But IIRC they found that drill bits coated with these impact diamonds last longer than bits coated with normal diamonds. 69.228.171.70 (talk) 15:40, 22 September 2012 (UTC)[reply]

Reference #5 is bogus[edit]

This reference goes to an empty domain with ads. — Preceding unsigned comment added by 24.101.250.87 (talk) 16:12, 18 September 2012 (UTC)[reply]

Fixed, url change, thanks - Vsmith (talk) 18:54, 18 September 2012 (UTC)[reply]

What type?[edit]

Popigai is the best example yet of the formation of a crater of this typeWhat type?--Wetman (talk) 22:38, 13 September 2014 (UTC)[reply]

Irreverent content[edit]

Extraneous irreverent content removed, having to do with comparing content to the content that is compared to the source content of the article i.e. the relationship between C and B when the article uses B to describe A --74.93.100.211 (talk) 23:52, 6 November 2014 (UTC)[reply]

External links modified (January 2018)[edit]

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Removed puffery[edit]

I removed puffery and exaggerated claims about the diamond deposits here. Very unlikely to be of commercial interest, now or in the future. --Pete Tillman (talk) 04:50, 11 November 2018 (UTC)[reply]

Impact crater or impact structure[edit]

@Paul H.: I assume you have some opinion on this? I would support moving this to "Popigai impact structure". Hemiauchenia (talk) 22:54, 14 December 2022 (UTC)[reply]

@Hemiauchenia: I agree. I looked at "Popigai Impact Structure and its Diamond-Bearing Rocks" by Victor L. Masaitis, ed., 2019, Springer International Publishing AG, ISBN 978-3-319-77987-4. Its paleo-topographic expression (crater) has been destroyed to the extent that it is best classified as an "impact structure." Paul H. (talk) 02:53, 15 December 2022 (UTC)[reply]

impactor size different in text and infobox?[edit]

text says the thing was 8km if chondrite or 5km if rocky, infobox gives 5+-2km. That implies it can't have been 8 at all, but max 7 and that it could have been just 3km! So, which of those is actually in the whatever source was used to get that? It should be at least the same info in the two... 141.138.34.69 (talk) 14:42, 4 April 2023 (UTC)[reply]

Likely impactor was around 6.1km, weighing roughly 500 billion tons, left impact crater of around 90-93km, NASA states impactor was between 5 and 8km, however 6km mark is more likely case. ^[1]

References

^ https://earthobservatory.nasa.gov/images/148403/russias-crater-of-diamonds

[1] ttps://earthobservatory.nasa.gov/images/148403/russias-crater-of-diamonds

[1]