File:Kimberlite (Morin Kimberlite Pipe, Témiscamingue Kimberlite Field; gravel pit near Lac des Quinze, Témiscamingue County, Quebec, Canada) 3.jpg
Original file (1,819 × 1,879 pixels, file size: 3.23 MB, MIME type: image/jpeg)
Captions
Captions
Summary
edit_3.jpg&action=edit§ion=1){kind=link}
| Description |
English: Morin Kimberlite from Quebec, Canada.
Kimberlites and lamproites have tremendous economic importance because they are host rocks for gem-grade and industrial-grade diamonds. Kimberlites & lamproites are unusual igneous bodies having overall pipe-shaped geometries. Their mode of formation is only moderately understood because they have not been observed forming. Kimberlites & lamproites are known from scattered localities throughout the world - only some are significantly diamondiferous. Classic localities for diamonds are India and Brazil. Africa was also discovered to have many kimberlites and is world-famous for producing large numbers of diamonds. Other notable diamondiferous kimberlite-lamproite occurrences include Russia, China, northwestern Australia, and northwestern Canada. Kimberlites are named for the town of Kimberley, South Africa. Several kimberlite pipes occur in the Kimberley area. Kimberlites have a gently tapering-downward, pipe-shaped cross-section. Lamproites have a cross-section more closely resembling that of a martini glass. Southwestern Quebec's Témiscamingue Kimberlite Field consists of several, recently-discovered kimberlite pipes. This is a friable sample from the Morin Kimberlite. It’s from the pipe’s crater facies, which is usually quickly eroded away and rarely preserved in most of the world’s kimberlite bodies. The Morin Pipe is undated, as far as I know. Based on ages of other kimberlites in southeastern Canada, it wouldn't surprise me if the Morin was emplaced during the Mesozoic. The rock appears to consist of serpentinized olivine (dirty greenish), phlogopite mica, and rotten clasts of something (orangish-brown). Pyrope garnet is reported from this material as well. The Morin Kimberlite does contain diamonds, but the mining company that owns the pipe has determined that it is not economically diamondiferous. Location: gravel pit atop the Morin Kimberlite Pipe, southwest of the southern end of Lac des Quinze, east-northeast of the town of Ville-Marie & east of Lake Timiskaming, western Témiscamingue County, southwestern Quebec, southeastern Canada |
| Date | |
| Source | https://www.flickr.com/photos/47445767@N05/49969554951/ |
| Author | James St. John |
Licensing
edit_3.jpg&action=edit§ion=2){kind=link}
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
|
This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/49969554951. It was reviewed on 2 November 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 17:02, 2 November 2020 | | 1,819 × 1,879 (3.23 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/49969554951/ with UploadWizard |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
_3.jpg&oldid=654886733){kind=link}