AZGS Web Posts

HudBay Minerals acquires 92% of Augusta Resources stock; management changes coming

Arizona Geology Blog - Thu, 2014-07-17 21:12
HudBay Minerals announced today that stockholders tendered 92% of Augusta Resources stock to the company. August is the parent of Rosemont Copper which is permitting a large open pit copper mine in the Santa Rita Mountains in southern Arizona, that could produce 5% of US copper for 40 years. [Right, proposed mine site.  Credit, Rosemont Copper]

HudBay Minerals Inc. and Augusta Resource Corporation announced today that Hudbay has taken up 116,233,761 common shares ("Augusta Shares") of Augusta that were validly deposited under Hudbay's offer to acquire all of the outstanding Augusta Shares not already owned by Hudbay or its affiliates for consideration per Augusta Share of 0.315 of a common share of Hudbay and 0.17 of a warrant to acquire a common share of Hudbay (the "Offer"). The Augusta Shares taken up under the Offer, together with those already owned by Hudbay, represent approximately 92% of the issued and outstanding Augusta Shares.
Hudbay has extended the Offer until 5:00 p.m. (Toronto time) on July 29, 2014 (the "Expiry Time") to enable Augusta shareholders who have not yet tendered their Augusta Shares to accept the Offer.

As I predicted earlier this week, HudBay plans on putting their own people in key positions in Augusta Resources (and Rosemont Copper as well?):

 It is anticipated that members of Hudbay's current management team will assume management positions with Augusta and replace Augusta's current senior management team and certain members of the Augusta Board of Directors will be replaced by nominees of Hudbay. In particular, David S. Bryson, Alan T. C. Hair, Patrick Donnelly and Patrick Merrin will be appointed to the Augusta Board of Directors, joining current directors Lenard F. Boggio, Timothy Baker and W. Durand Eppler. Gilmour Clausen, Christopher M. H. Jennings, Robert P. Pirooz, Robert P. Wares and Richard W. Warke will resign from the Augusta Board of Directors.
The two companies also announced a loan of C$40 million from HudBay "intended to provide short-term working capital amounts to Augusta."
Categories: AZGS Web Posts

Slide wildfire video describes firefighting strategy

Arizona Geology Blog - Thu, 2014-07-17 20:50
The Southwest Fire Science Consortium posted a video report on the Slide wildfire on Vimeo.   They described it:

The Slide Fire ignited on May 20, 2014, 2014 in Oak Creek Canyon between Flagstaff and Sedona, Arizona. Firefighters first raced to keep the fire from destroying over 300 homes and cabins in the canyon, and later prevented the fire from moving into residential areas outside of Flagstaff. While the strategy chosen to manage the Slide Fire using large, low-intensity burnouts on the perimeter of the fire was primarily aimed at increasing firefighter safety and taking advantage of natural terrain features, it had the added benefit of providing benefits for the forest and landscape. The management of this fire reflects the changing nature of wildfire in the western US. This video was narrated by Tim Harrison and written and produced by Josh McDaniel for the Southwest Fire Science Consortium.

You can find out more about wildfire science in the Southwest by visiting
The Slide Fire from Josh McDaniel on Vimeo.

We've been monitoring the area for heavy rains that could cause debris flows ("mudslides").
Categories: AZGS Web Posts

Participate in EarthCube governance

Arizona Geology Blog - Wed, 2014-07-16 17:04

The Arizona Geological Survey has been running the NSF EarthCube Test Enterprise Governance project for the past year, gauging community requirements for cyberinfrastructure in the geosciences. We now have a community-driven plan and design that we are sharing publicly.  Participation in EarthCube is open and we'll describe opportunities to be involved.  [Right, Susan Winters, Brian Wee, and Jennifer Arrigo strategize at one the EarthCube workshops organized by AZGS earlier this year. Credit, AZGS]
 Join us as we move into the next phase of building EarthCube!
Interested in participating in EarthCube's Demonstration Governance? Mark your calendar for one of the upcoming EarthCube Community Webinars on Thursday, July 17 at 9am MST/12PM EDT, or Monday, July 21 at 12pm MST/3pm EDTCall-in details are posted here.

The purpose of these webinars is to discuss priorities, expectations, and next steps for all of those interested in participating in EarthCube Demonstration Governance standing committees and teams.These groups, the Technology/Architecture Standing Committee, Science Standing Committee, Engagement Team, and Liaison Team, will be responsible for carrying out specific critical functions for EarthCube and EarthCube Governance. Therefore, the EarthCube community will be empowered to decide how they will accomplish these functions by defining decision-making processes and leadership roles.

We encourage all members of the EarthCube community who have already expressed interest, have an interest, or just want to learn more about how to participate in these groups to join us. As always, these sessions are open to all. 
Categories: AZGS Web Posts

HudBay acquisition of Augusta Resources on verge of completion

Arizona Geology Blog - Tue, 2014-07-15 19:59
HudBay Minerals could complete its friendly acquisition of Augusta Resources, parent company of Rosemont Copper, sometime tomorrow, Wednesday, July 16.

Augusta's "poison pill" stockholder protection plan expires today.    First thing Wednesday, the stock shares tendered by current owners will be sold to HudBay by brokers and before the end of the day, HudBay is expected to own the company.

The final deal agreed to unanimously by Augusta's Board of Directors, provides that "in addition to 0.315 of a Hudbay common share as provided in Hudbay's original offer, Augusta shareholders will also receive 0.17 of a warrant to acquire a common share of Hudbay for each Augusta common share, representing consideration with a value of approximately C$3.56 per Augusta common share. The Revised Offer represents a total equity value of C$555 million based on 100% of the fully-diluted, in-the-money common shares of Augusta (including those already owned by Hudbay)."

HudBay executives and technical staff have already been in Tucson for weeks assessing the Rosemont property and preparing for the takeover.  It's expected that HudBay will honor the commitments made by Rosemont as part of the permitting process, but will transfer staff from their Canadian headquarters and facilities to fill key slots at the Rosemont operation.   

Categories: AZGS Web Posts

US 89 landslide repairs to begin

Arizona Geology Blog - Tue, 2014-07-15 07:28
The Arizona Dept. of Transportation issued the following press release on Monday:

Damaged highway south of Page set to reopen before next summer travel season

PHOENIX —The reconstruction of US 89 between Bitter Springs and Page will begin later this month after the State Transportation Board approved a $25 million project to repair the landslide-damaged highway at Friday’s board meeting in Cottonwood, according to the Arizona Department of Transportation.

The roadway, which suffered catastrophic damage following a landslide on the early morning of Feb. 20, 2013, has remained closed after a 500-foot section of roadway buckled in Echo Cliffs, approximately 25 miles south of Page.

The repair will include moving the roadway approximately 60 feet away from the landslide area toward Echo Cliffs and using rock material removed for the roadway realignment to construct a downslope buttress to stabilize the area.

The closed section of roadway is scheduled to reopen prior to next summer’s busy travel season. The construction contract will also include a monetary incentive for the contractor if it is able to complete the project ahead of schedule.

Work on the project will begin in a couple of weeks, but major work is expected to start in late August when crews begin drilling and blasting operations to build the rock buttress. Nearly 1 million cubic yards of rock material is expected to be removed and a 1,500-foot section of US 89 will be realigned with new pavement.

The ultimate repair of US 89 is the final step in fulfilling ADOT’s three-pronged approach to the US 89 landslide incident, which included providing immediate emergency access, conducting a geotechnical investigation and restoring essential traffic to the area.

Last summer ADOT paved Navajo Route 20 (Temporary US 89), which was a mostly dirt road stretching from Bodaway-Gap to LeChee.

“Once a long-term solution was identified, ADOT worked diligently to complete all the federally required clearances needed prior to construction,” said Steve Boschen, ADOT deputy state engineer of project delivery. “This process can sometimes take years, but with help from many of our Navajo Nation partners, the Federal Highway Administration and other regulatory stakeholders, we are ready to begin the US 89 landslide repair.”

Prior to breaking ground on the project later this month, ADOT had to clear several hurdles. After an extensive geotechnical investigation identified the necessary repairs last summer, ADOT retained an engineering design firm and developed plans for the eventual repair.

Following that, the team finalized all federally required environmental reviews that include cultural, biological and water quality measures, completed the plans for the required right-of-way easements, and finalized negotiations with the contractor.

The final step prior to Friday’s board approval was completing negotiations on a guaranteed maximum price for the project construction with FNF Construction, the same contractor that completed the paving of US 89T.

The US 89 landslide repair project is eligible for reimbursement through the Federal Highway Administration’s emergency relief program, which provides funding to state and local agencies for the repair or reconstruction of highways, roads and bridges that are damaged in natural disasters and catastrophic failures.

For more information, visit   Note, there are 15 videos posted there covering various aspects of the landslide, community impacts, engineering, and construction plans,

Read more at:
Categories: AZGS Web Posts

Small quake northwest of Kingman

Arizona Geology Blog - Tue, 2014-07-15 07:21

Most of our attention has been on southeastern Arizona where aftershocks continue from the June 28 magnitude 5.2 Duncan earthquake.   But yesterday the opposite side of the state had a minor M 1.9 earthquake at1:13 p.m. local time, midway between Kingman and Boulder City.

[Right, orange star marks epicenter.  Credit, USGS]
Categories: AZGS Web Posts

Biggest aftershock yet from Duncan quake - M 4.1

Arizona Geology Blog - Sat, 2014-07-12 08:13
A magnitude 4.1 aftershock last night at 7:48 p.m. local time, is the biggest since the main 5.2 Duncan earthquake struck on June 28.  [Right, southern-most orange circle is the M 4.1 event.  Credit, USGS]

There was another M 3.0 aftershock at 12:53 a.m. this morning.  That makes 7 events in a day and half of about magnitude 3 or larger, most of which were felt by local residents and some at least 30 miles away.

Categories: AZGS Web Posts

Map of largest aftershocks from the Duncan M 5.2 earthquake

Arizona Geology Blog - Fri, 2014-07-11 16:33
We posted a map [right] this afternoon of all of the magnitude 3.0 and larger aftershocks from the June 28 magnitude 5.2 Duncan earthquake [shown in red]. Five of the 13 events have occurred in roughly the last 24 hours.

The seismic stations used to record the aftershocks are far enough away that there may be significant errors in their initial locations.  The five portable stations deployed by AZGS in the past few days should give us more detailed subsurface velocity information so we can recalculate these events and more accurately determine their locations.

Categories: AZGS Web Posts

Studying the Duncan M5.2 aftershocks: What can we learn?

Arizona Geology Blog - Fri, 2014-07-11 16:24

The Arizona Geological Survey deployed 5 temporary seismic stations [Right.  Photo credit, Jeri Young, AZGS] in the Duncan area of eastern Arizona to better monitor the aftershocks following the June 28th, M 5.2 earthquake.

Monitoring earthquakes in the months following a moderate to larger sized event is an opportunity to gain knowledge about the how the Earth’s crust behaves in the area of the main quake. Measureable aftershocks can number in the several hundred.  Additional seismometers in the general area surrounding the main earthquake are needed to correctly estimate the number, size and location of the aftershocks.

Determining aftershock location and timing can provide information on fault rupture geometry (or shape), fault mechanics (type of movement) and provide insight into regional stresses. All of this information can be used to estimate the seismic hazard, and therefore help communities prepare themselves for future events.

Guest post by Jeri Young, AZGS
Categories: AZGS Web Posts

Duncan quake aftershock rocks Clifton

Arizona Geology Blog - Fri, 2014-07-11 11:13
We are getting reports that another aftershock, M3.6,at 10:33 a.m. this morning shook buildings in Clifton, about 30 miles to the north-northwest.

[Right, orange star marks latest aftershock to the June 28, M5.2 Duncan earthquake.  Credit, USGS]
Categories: AZGS Web Posts

Duncan area hit by four larger aftershocks

Arizona Geology Blog - Fri, 2014-07-11 08:54
The Duncan area experienced four more aftershocks in an 18 hour period  [right. credit USGS], with local residents reporting feeling them.   There was a M3.6 event at about 3 p.m. Thursday and a M3.2 at 11:15 p.m.   A M2.8 occurred at 1:38 a.m. this morning, followed by a M3.5 quake at 5:41 a.m. The Arizona Geological Survey is developing an interactive online map viewer to show all the aftershocks we are recording.    We installed 5 portable seismometers around the main shock epicenter area earlier this week which should be accurately recording not only these larger events but many other shocks that are too small to be felt.   
The Duncan M5.2 main shock hit on Saturday, June 28.
Categories: AZGS Web Posts

Temporary seismic stations capturing more aftershocks to Duncan earthquake

Arizona Geology Blog - Wed, 2014-07-09 08:27
AZGS staff installed three more temporary seismometers yesterday, in the area around the M5.3 Duncan earthquake in eastern Arizona.  This brings the number of temporary stations to five.   AZGS geologists Jeri Young and Mike Conway observed half a dozen micro-quakes roll across the area just during lunch while they were installing the stations.     Mike posted details and photos at our Facebook page.  [Right, Jeri Young setting up temporary station]

At 1:15 a.m. this morning the area experienced a M3.6 aftershock which should have been captured by the new stations.     [Left, orange star marks aftershock epicenter.  Credit, USGS]

Categories: AZGS Web Posts

Freeport may sell off Chile mine to focus on US investments

Arizona Geology Blog - Mon, 2014-07-07 13:56

Phoenix-based Freeport McMoRan Copper & Gold is  reportedly considering selling its huge Candelaria copper mine in Chile to help pay down corporate debt and refocus its efforts in the US, according to a story in the Wall Street Journal.   They say that Freeport may be negotiating with Aaron Regent, CEO of Canadian mining investment firm Magris Resources.      Interestingly, the WSJ had previously reported that Magris had looked at acquiring Augusta Resources, parent of  Rosemont Copper, during its takeover battle with HudBay Minerals.  [Right, Candelaria mine. Credit, Freeport McMoRan Copper & Gold]

Freeport CEO Richard Adkerson was noted to have said previously the company wants to put emphasis on exploration in the US because of more consistent environmental and labor regulations.  That fits with our perception that Freeport is increasing exploration in Arizona.

Candelaria, which is 80% Freeport and 20% Sumitomo owned, mined 370 million pounds of copper and 87,000 ounces of gold last year.    Freeport describes Candelaria as "an iron oxide, copper and gold deposit" with development of "an open-pit copper mine and a 6,000 metric ton-per-day (mtd) underground copper mine, which is mined by sublevel stoping."
Categories: AZGS Web Posts

Aftershocks continue from Duncan M5.3 earthquake

Arizona Geology Blog - Sun, 2014-07-06 08:57
Two aftershocks with magnitudes over 3.0 hit the Duncan area on Saturday, a week after the 5.3 main shock occurred.

A magnitude 3.2 event hit at 12:30 pm, followed by a magnitude 3.5 shock at 9:24 pm.   [Right, the top orange circle is the M3.2 aftershock, the leftmost orange circle is the M3.5 event.   Credit, USGS]    The USGS only reports events greater than magnitude 3.0.   AZGS is identifying many more aftershocks in the 1.0 -3.0 range.

AZGS is working with the PASSCAL (Program for Array Seismic Studies of the Continental Lithosphere Instrument Center) instrument facility in Socorro, NM, to deploy a temporary network of 6 seismometers in the epicentral area.   In addition to better detection and location of continuing aftershocks, the information will help correct the locations of the 100+ aftershocks already recorded.
Categories: AZGS Web Posts

BLM raises fees on mining claims and sites by 10%; Arizona claim numbers declining

Arizona Geology Blog - Sat, 2014-07-05 15:55
The US Bureau of Land Management increased its fees on unpatented mining claims, mill sites and tunnel sites on federal public lands by about 10%, effective June 30, 2014, according to a story on

The number of Federal Mining Claims reported in Arizona today is 43,490, according to AZGS Economic Geologist Nyal Niemuth.  There has been a big drop in lode claims from 40,018 to 34,632 since Jan 17, the last time we queried the total.  The total number then was 49,991. Nyal thinks the drop is a result of uranium claims on the Colorado Plateau being dropped.  The 10 year trend is shown in the figure above.

The BLM website describes recording fees for new claims:Location Fee has increased from $34 to $37. 

All Mining Claims located on or after September 1, 2014, will cost a total of $212:
•    $20 Processing Fee (filing fee)
•    $37 Location Fee
•    $155 Maintenance Fee (Placer claims over 20 acres must pay an additional $155
• For each 20 acres or portion thereof.)

All monies are due at the time of filing. A claim will not be accepted unless the payment of the maintenance and locations fees is submitted. 

The initial $155 maintenance fee is due for the assessment year in which the claim is located (not recorded). This fee is not prorated.  Mining claim holders must now pay the new location and maintenance fees for any mining claim or site located on or after September 1, 2014, according to the Federal Register. Mining claimants must also pay the new maintenance fee for existing mining claims and sites to maintain those claims and site, beginning with the 2015 assessment year.  However, all maintenance fees must be paid in advance for the upcoming 2015 assessment year.

All Federal mining claims for locatable minerals are filed with BLM, part of Dept of Interior. The Forest Service (Dept. of Agriculture) generally does not own the minerals under the surface it manages.

By agreement BLM allows Forest Service to manage the surface impacts of mining within Forest Service areas. Thus, the Forest Service approves plans of operations, etc. for mining claims.
Categories: AZGS Web Posts

USGS Historical Topo Map Explorer online

Arizona Geology Blog - Fri, 2014-07-04 17:02
The USGS has an Historical Topographic Map Explorer at 

that allows you to view topographical maps at all scales that were ever produced by the agency, going back to the 1880s.   I pulled up an 1887 map of the Prescott area in the screen shot above.   The sliding bar at the bottom of the search box lets you see what scale maps were generated in what year.   Maps are available for the entire country.
Categories: AZGS Web Posts

Copper provides the blue color in fireworks

Arizona Geology Blog - Fri, 2014-07-04 16:59
Minerals provide the colors in our fireworks, with copper the source of blue, according to a short informational item posted by the USGS describing what minerals produce other colors, at

Happy 4th of July!

Categories: AZGS Web Posts

Haboob batters Phoenix

Arizona Geology Blog - Fri, 2014-07-04 12:31
This short video shows the dust storm that hit the Phoenix valley on Thursday night.    The Arizona Republic reports the dust storm and following rain storm knocked out power to 25,000 customers in the valley.

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Categories: AZGS Web Posts

Thousands of Arizona mining maps and files added to online repository

Arizona Geology Blog - Fri, 2014-07-04 09:08

Last month, the Arizona Geological Survey completed another milestone in the digitization of historic mining records from the former Arizona Department of Mines and Mineral Resources. After months of cataloging and geolocating the map collection, we have finally released 5,000 new files (mostly maps) at The maps reflect the changing nature of mining and exploration in Arizona during the 20th century. Most maps from the early to mid century are of two common varieties. There are plan maps showing mining claims along with geology and surface features. A large number are longitudinal sections of mines underground workings often providing sample locations and associate widths and metallic grades. Later 20th century maps are commonly focused on surface exploration efforts covering large areas. They tend to be maps of land ownership, bedrock geology, alteration, geochemistry and geophysical investigations.   [Right, thumbnail image of map locations available online]
Maps can be searched specifically as a document type from the Search page or found as part of a mine’s complete records when searching on the Map page.
Today, we released more than 800 Arizona records from a donated collection, the James Doyle Sell mining collection. James Sell was a native of Arizona, born in Casa Grande in 1930.  He served the U.S. Army as a radio operator in the Korean War. He was awarded the Korean Service Medal and two Bronze Star Medals. On his return, he studied at the Colorado School of Mines and graduated in 1955. He earned his master's degree from the University of Arizona. He was the Southwest Exploration Manager for ASARCO and retired after 32 years. Sell was a member of the Arizona Geological Society and the Society for Mining, Metallurgy and Exploration.
His collection consists of over 1,800 folders containing geologic reports and mineral exploration data from around the world, but primarily from Arizona and other states in the Southwest. Currently, only those files related to Arizona are online. For a listing of his other files, see

Post by Casey Brown, AZGS Mining Data Project Manager 
Categories: AZGS Web Posts

M3.9 aftershock to Duncan earthquake

Arizona Geology Blog - Thu, 2014-07-03 20:52
A magnitude 3.9 earthquake that hit just before 4 p.m. today is the largest aftershock so far following Saturday's M5.3 Duncan earthquake near the New Mexico border.   [Right, the main shock and all aftershocks greater than magnitude 3.0,  including the latest event in orange.  Credit, USGS]    As of 7:30 p.m. tonight, 13 people reported having felt this latest aftershock.

We expect aftershocks to continue for weeks and possibly months. 

[note: the initial post had a typo saying the event occurred just before 2 p.m.]
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