December 29, 2021 19:45 GMT
Copper was mined on site between 1850 and 1920, after which it remained submerged by groundwater.
A mysterious bluish substance of mineral origin was found in the walls of an extinct copper mine near Lake Superior in northern Michigan, USA, the chemical composition of which has not yet been identified. they reported local media.
“This bright blue mineral has not been positively recognized at the time of this post, but is a secondary mineral caused by Interaction with air and waterReads an entry on the Facebook page of the current owners of Adventure Mine, which was Abandoned in 1920 after operation since 1850.
The publication specifies that the discovery was made on the third level, which was submerged by groundwater before draining last fall. Furthermore, they specify that “Foreign minerals have been introduced into the area in the form of residue left in the mine.”
“Tin, zinc, lead and iron And other minerals left in the water would have had a chance to fall into the water and join up with other minerals through a very slow process.” And they add.
The specialists concluded that the chances of identifying the metal are very low as it can decompose after leaving the water.
Finally, the owners of the mine explained that the mine has a total 13 levels, but they don’t have the equipment to continue exploring below the area they’ve reached yet.
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