Lots of people enjoy going to fee mining sites where you can prospect inactive surface mines, mine tailings, soil, sediments or outcrops and keep any rocks, gems, minerals or fossils that you find. Examples include: Herkimer Diamond Mines where you can search for doubly-terminated quartz crystals, and Crater of Diamonds where you might be lucky enough to find a real diamond.
The Pennsylvania Supreme Court decided not to overturn over 100 years of property transactions in a case involving the ownership of natural gas produced from the Marcellus Shale. Shale gas is not to be treated differently from natural gas produced from a conventional reservoir.
The next Arizona Mining Review features an interview with Dorothy Kosich of MineWeb.com on the potential impact of the proposed Obama budget, and discussion with economist Dr. Kent Hill of Arizona State University on the economic impact of mining on Arizona. Also, a geologist from the Utah Geological Survey will discuss the recent landslide at the Bingham Canyon Mine.
Watch it online on Friday at 10:00-10:30 AM MST-PDT. A video of the program will be available online if you can’t watch at that time.
How diamonds form is one of the most common geological misconceptions. Diamonds form under a variety of conditions that rarely, if ever, involve coal as a source of carbon. In fact, most diamonds formed long before the first coal swamp or land plant!
Triboluminescence is a flash of light produced when a material is subjected to friction, impact or breakage. The phenomenon is also known as fractoluminescence and mechanoluminescence. Triboluminescence is common in minerals because about 50% of crystalline materials are thought to exhibit the property.
“Manufactured sapphire — a material that’s used as transparent armor on military vehicles—could become cheap enough to replace the glass display covers on mobile phones.” Quoted from the MIT press release.
Arizona Mining Review is a live, online video magazine from the Arizona Geological Survey exploring and reviewing mining in Arizona — its challenges and successes. From potash to copper to gold, from mineral exploration to policy development, tune in to see experts from industry, academia, research, and politics discuss the current state and future of mining in Arizona.
You can view the next program live on Wednesday, March 27th at 10:00 AM – 10:30 AM MST or view archive programs at any time.
The Arizona Geology Blog has an interesting post about how potash deposits in the Holbrook Basin of Arizona have been valued. A Google search shows that Holbrook Basin potash has been frequently discussed on the blog.
Nonfuel mineral production values increased in the United States for the third consecutive year, up $1.7 billion since 2011. [...] The estimated value of mineral raw materials produced at mines in the United States in 2012 was $76.5 billion, a slight increase from $74.8 billion in 2011. Net exports of mineral raw materials and old scrap contributed an additional $21 billion to the U.S. economy.
Spinel is a gemstone that has been confused with ruby and sapphire for over 1000 years. Several of the most spectacular spinels ever discovered have been mounted in “crown jewels” and other “jewelry of significance” under the assumption that they were rubies or sapphires.
The Arizona Geological Survey is celebrating its 125th anniversary with photos of the day, field trips, an Arizonamining review and much more. Hundreds of geoscientists have contributed to the production of more than 1,000 geologic products – maps, reports, geologic hazard assessments, and other valuable products.