fredag 11. desember 2015

Where on Google earth #521

Felix presented the lowest point in the Americas, the Western Hemisphere and the Southern Hemisphere all rolled into WoGE #520. There is a lot of visible geology in Argentina!

Since I solved it quickly, I will post almost as quickly:

Besides, weekend is coming and I want to get home soon. :)

As always, the first person to post the position and whatever is interesting about the geology/hydrology/geowhatever in this location, wins the privilege of hosting the next WoGE.

Previous WoGEs are collected by Felix on 
his blog and a KML file.

6 kommentarer:

  1. And the german-norwegian table tennis competition continues ...

    You guys don't give us, the others, any chance ... finding in the same day, sometimes with 11 (!!!!) minutes apart - is getting hard to keep up with you, the super-WoGErs O:)

  2. To help you a little bit, I own a little piece of something from this place.

    1. I can't see an oil rig on the picture, not even a gas station....

  3. Southwest Greenland near the community of Kangilinnguit

    61 14 00N 48 05 55W

    The circular hole is the cryolite mine at Iviqtut. Cryolite is used in the process of modern aluminum extraction. This location is one of the only naturally occurring locations of this very important compound. gives us this information:

    Ivigtut was the World's only mine for cryolite. Cryolite was used [as early as the nineteenth century] as a flux for processing bauxite in aluminium production and before that to produce opaline glass. The mine closed several times in the 1960s, 1970s & 1980s but production continued - dumps were dug out, the mine reopened to excavate low-grade ore and finally the pier, made from 'waste rock', was removed and processed.

    Most of the interesting sulphides are known from small spots in polished ore sections (galena is a good indicator mineral!). In cryolite only pyrite, galena, sphalerite and chalcopyrite are common. Molybdenite chiefly occurs in the host rock, enclosing the cryolite ore body.

    Ivigtut is a spectacular source of rare minerals, but optimistic erroneous identifications abound. Cryolite crystals are for all practical purposes rarely available - they were collected a long time ago and everybody wants them. Virtually all specimens came from two, large pockets. By far most of the 'Cryolite crystals' I see are thomsenolite, pachnolite, ralstonite or something similar, subject to optimistic interpretation. Incidentally, thomsenolite does occur as parallel grown very large pseudo-cubic crystals and/or crystals with strong basal cleavage that make good cryolite imitations!

  4. Andrew got it - congratulations!
    I ran XRD on my Cryolite sample for confirmation.

  5. is up.