Talk:Greenschist

Volcanoes Mid‑importance

	Volcanoes portal This article is within the scope of WikiProject Volcanoes, a collaborative effort to improve the coverage of volcanoes, volcanology, igneous petrology, and related subjects on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.VolcanoesWikipedia:WikiProject VolcanoesTemplate:WikiProject VolcanoesWikiProject Volcanoes articles
Mid	This article has been rated as Mid-importance on the project's importance scale.

Geology Mid‑importance

	Geology portal Talk:Greenschist is part of WikiProject Geology, an attempt at creating a standardized, informative, comprehensive and easy-to-use geology resource. If you would like to participate, you can choose to edit this article, or visit the project page for more information.GeologyWikipedia:WikiProject GeologyTemplate:WikiProject GeologyGeology articles
Mid	This article has been rated as Mid-importance on the project's importance scale.

Untitled[edit]

New page started at Greenschist/Temp pending copyvio resolution. Vsmith 23:52, 7 September 2005 (UTC)[reply]

Petrology[edit]

To "clarify", in petrology, minerals which are essential constituents of a rock (in this case, chlorite and actinolite) are listed A + B, and minerals which are commonly seen but are not essential components, are listed as +/- (in this case, albite and epidote). It's fairly straightforward. Rolinator (talk) 02:20, 22 February 2008 (UTC)[reply]

Is all greenstone (or green stone) greenschist?[edit]

Greenstone is a term applied to stone used in churches for example in Lincolnshire, which is a long way from any source of volcanic rock (eg. St Peter's Church, South Somercotes) "Greenstone" redirects to greenschist, but is that correct? Can anyone with knowledge of geology (which I have not) help please? --Peter I. Vardy (talk) 14:07, 5 February 2011 (UTC)[reply]

In this case 'Greenstone' refers to the Cretaceous 'Spilsby Sandstone' which contains the green mineral glauconite, the Cretaceous Greensand of southern England is green for the same reason - here is a source for that [1] page 28. Mikenorton (talk) 14:22, 5 February 2011 (UTC)[reply]

Maybe glauconite rather than bluish glaucophane? otherwise agree w/Mikenorton. Greenstone is a general term for green rock whereas greenschist has a specific petrologic meaning. There are a variety of green rocks other than greenschist - glauconitic sandstone, skarn, hornfels and jadeite... Vsmith (talk) 15:10, 5 February 2011 (UTC)[reply]

Two minerals that start with 'glauco' and I get them mixed up, thanks Vsmith for spotting my mistake. Mikenorton (talk) 15:59, 5 February 2011 (UTC)[reply]

Looks like it would be worth adding something to the Greenstone DAB page in the light of this use of the term with a redirect to Spilsby Sandstone Formation - which is a latest Jurassic/early Cretaceous sedimentary rock - if one of us can get around to starting the article. cheers Geopersona (talk) 16:16, 5 February 2011 (UTC)[reply]

pressure error?[edit]

Far as I know, 10 kilobars is NOT 58,000 PSI. but I don't know which pressure is "correct" for greenschist. Oreegdreeg (talk) 00:36, 27 July 2022 (UTC)[reply]

The kbar values are correct. It looks like the values were tweaked without propagating the change to the conversion template that follows. Fixed now. --Kent G. Budge (talk) 02:03, 27 July 2022 (UTC)[reply]