Arizona Geological Society

Cactus Mine Update - From Taxpayer Liability to a Top 10 US Copper Producer

  • 03 Sep 2024
  • 5:30 PM - 8:00 PM
  • Hexagon Office at 40 East Congress Street, Suite 150, Tucson, Arizona 85701

Registration

(depends on selected options)

Base fee:
  • Members RSVP here. Registration requires online prepayment via credit card. Confirmation will not be complete without prepayment. Please cancel by 6 p.m. on the Sunday prior to the meeting, if you are unable to attend - no shows and late cancellations will result in the forfeiture of their payment, if AGS is unable to sell your dinner.
  • Non-members RSVP here. Registration requires online prepayment via credit card. Confirmation will not be complete without prepayment. Please cancel by 6 p.m. on the Sunday prior to the meeting, if you are unable to attend - no shows and late cancellations will result in the forfeiture of their payment, if AGS is unable to sell your dinner.
  • Free to Student members. Full-time students may join online free - click "Join or Renew" Please cancel by 6 p.m. on the Sunday prior to the meeting, if you are unable to attend.

Registration is closed


Arizona Geological Society

2024 Speaker Series

Tuesday,  3 September 2024 | 5:30 - 8:00 PM

Location:  Hexagon Mining Division Office

40 East Congress Street, Suite 150, Tucson, Arizona 85701


Parking: On the street or parking garage (Old Pueblo Parking)

Social Hour with Sandwiches from Beyond Bread (5:30-6:30 PM), Presentation (6:35 PM)

For those planning to attend the event, please register by 6:00 PM on Sunday,  September 1, 2024

For those unable to attend, here is a

MS Teams URL for Remote Viewing

Remote Broadcast begins at 6:35 PM

Streaming URL Link

The Arizona Geological Society also thanks Hexagon

for generously providing the venue and drinks


Cactus Mine Update

From Taxpayer Liability to a Top 10

US Copper Producer

Travis Snider and Adam Hawkins

Arizona Sonoran Copper Company

Background The Cactus Project is comprised of three deposits and one Stockpile within a 5.5 km mine trend, including the past producing Sacaton Mine, the deposits now known as Cactus East and Cactus West, in addition to the Parks/Salyer deposit, SW along the mine trend.

The Cactus and Parks/Salyer deposits are portions of a large porphyry copper system that has been dismembered and displaced by Tertiary extensional faulting. Porphyry copper deposits form in areas of shallow magmatism within subduction-related tectonic environments (Berger et al., 2008).

Graphics courtesy of the Arizona Sonoran Copper Company 

GEOLOGY & DEPOSIT.  Major host rocks are Precambrian Oracle Granite and Laramide monzonite porphyry and quartz monzonite porphyry. The porphyries intruded the older rocks to form mixed breccias; monolithic breccias and occur as large masses, poorly defined dike-like masses; and thin well-defined but discontinuous dikes.  The deposit is structurally complex with intense fracturing, faulting, and both pre-mineral and post-mineral brecciation. It is bounded on the east and west sides by normal faults.

Graphics courtesy of the Arizona Sonoran Copper Company 

Chalcocite and covellite are the only supergene sulfides recognized. The chalcocite blanket in the mineralized zone is irregular in thickness, grade, and continuity. The thickness of leached capping varies from less than 100 ft (30 m) to over 650 ft (198 m), with the thicker intercepts on the north side. Substantial quantities of oxidized copper minerals are found erratically distributed through the capping. Chrysocolla, brochantite, and malachite are the most common oxidized copper minerals. In upper portions of the capping, chrysocolla predominates, while brochantite and malachite predominate in the lower portions. 


Speakers:  


Travis Snider (l) (VP Sustainability & External Relations)

and Adam Hawkins (r) (Communities & Local Media inquiries)




Hexagon Mining Division Office - 40 East Congress Street,

Suite 150, Tucson, Arizona 85701


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