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United States
Carlota Mine

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 Location:
77 km E from Mesa, Arizona, United States

  Address:
2624 Forest Service Road 287
Miami
Arizona, United States
85539
Phone  ...  Subscription required
Fax928-473-3519
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Copper
Mining Method
  • Truck & Shovel / Loader
Processing
  • Sulfuric acid (reagent)
  • Heap leach
  • Solvent Extraction & Electrowinning
Mine Life3 years (as of Jan 1, 2020)


Owners

Source: p. 153
CompanyInterestOwnership
KGHM Polska Miedz S.A. 100 % Indirect
Carlota Copper Company (operator) 100 % Direct

Deposit Type

  • Porphyry
  • Hydrothermal
  • Skarn


Summary:

The Carlota mine is extracted ore from a deposit characteristic of a complex hydrothermal system with some features of a porphyry-copper type.

The area is built of igneous, metamorphic and sedimentary rocks of various ages from the early Proterozoic to the Tertiary.

The Carlota deposit is formed by the surface mineralization of copper oxides in the proterozoic Pinal Schist. Chrysocolla is a dominant ore mineral and usually occurs as coatings, crusts and filling in fractures and heavily desintegrated rock masses.


Mining Methods

  • Truck & Shovel / Loader


Summary:

Copper ore extraction by the Carlota mine is by conventional methods typical for open-pit metals mines, i.e. the ore is mined by blasting and then is transported by haulage trucks. In 2014 mining operations from the open pit ceased in the Carlota-Cactus Pit. In 2018 mining re-commenced in the Eder South area.


Crushing and Grinding


Processing

  • Sulfuric acid (reagent)
  • Heap leach
  • Solvent Extraction & Electrowinning

Source: Subscription required

Summary:

Due to the nature of the ore, it is processed using the heap leach, the solvent extraction and electrowinning (SX/EW) method which involves subjecting the ore to sulphuric acid. The pregnant leach solution (PLS) is pumped out of the heap and after the initial mechanical cleaning is subjected to the SX process, followed by the EW electrowinning process. The end product is electrolytic copper in the form of cathodes.


Production:

CommodityUnits202020192018
Copper kt  ......  Subscription required  ......  Subscription required3.2
All production numbers are expressed as cathode.
Subscription required - Subscription is required.


Reserves at December 31, 2014:

CategoryTonnage CommodityGradeContained Metal
Measured 1,230 kt Copper 0.53 % 6,521 t
Indicated 3,657 kt Copper 0.42 % 15,358 t
Measured & Indicated 4,887 kt Copper 0.45 % 21,879 t
Inferred 159 kt Copper 0.47 % 751 t


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Aug 9, 2021
....................... Subscription required ....................... Subscription required Subscription required Aug 9, 2021
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2020
Subscription required 2019
Subscription required 2018

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Financial Review 2018
Annual Report 2017
Annual Report 2016
Annual Report 2015
Annual Report 2014
Year-end Mineral Reserves 2014
Subscription required - Subscription is required.

Aerial view:

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