All Articles
Greenstone Belts in Minnesota
August 2005 by Edgar B. Heylmun, PhD
Greenstone is a dark greenish-black basaltic rock which, along with chloritized schist, forms belts up to 50 miles wide in northern Minnesota, in rocks of Late Archean age. Most belts are 2.6 to 2.9 billion years old.Additional articles that might interest you...
Miners Welcome Comments by Alaska Official
December 2003
The head of Alaska’s Department of Environmental Conservation angered environmentalists by saying more than enough acres are being managed for conservation and land set-asides aren’t necessary for environmental protection.
The head of Alaska’s Department of Environmental Conservation angered environmentalists by saying more than enough acres are being managed for conservation and land set-asides aren’t necessary for environmental protection.
The Lost Silver Triangle of the Sierra Madre—Conclusion: Tayopa, Guaynopa, and Guaynopita
July 2008
Lieutenant Henry O. Flipper might well have been correct about the “Santa Fe de Rodríquez” being the name of what is now called Guaynopa. However, an Indian named Agustín de la Cruz, who was associated with Cristóbal Rodríquez, is credited with discovering the mine in 1741. It is probable that the Spanish settlement had indeed been found because of its rather extensive ruins.
Lieutenant Henry O. Flipper might well have been correct about the “Santa Fe de Rodríquez” being the name of what is now called Guaynopa. However, an Indian named Agustín de la Cruz, who was associated with Cristóbal Rodríquez, is credited with discovering the mine in 1741. It is probable that the Spanish settlement had indeed been found because of its rather extensive ruins.
2016 Gold Prospecting and Mining Summit
October 2015
We’ve been fielding quite a few questions lately from subscribers and manufacturers wanting to know if we are going to host another Gold Prospecting and Mining Summit.
We’ve been fielding quite a few questions lately from subscribers and manufacturers wanting to know if we are going to host another Gold Prospecting and Mining Summit.
Montana Lawmakers Want Economic Review of New Mining Rule
November 2005
A group of lawmakers is asking the state to review the economic effects of a new mining law that one lawmaker contends is nothing more than a thinly veiled effort to end all mining in Montana.
A group of lawmakers is asking the state to review the economic effects of a new mining law that one lawmaker contends is nothing more than a thinly veiled effort to end all mining in Montana.
Coprolite—A Prospector's Tale
February 2014
Gold nuggets come in all forms, but I never expected that dinosaur nuggets would too, and at a decent price.
Gold nuggets come in all forms, but I never expected that dinosaur nuggets would too, and at a decent price.
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