United States

South Fort Meade Mine

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Categories

Overview

Mine TypeOpen Pit
Commodities
  • Phosphate rock
Mining Method
  • Dragline
Production Start... Lock
Mine Life2034
ShapshotFlorida phosphates is included three phosphate production stage mining facilities (South Fort Meade, Four Corners and Wingate) and three exploration properties (DeSoto, Pioneer and South Pasture) in Florida consisting of over 210,000 acres of property in Central Florida.
Related AssetFlorida phosphates Operation

Owners

SourceSource
CompanyInterestOwnership
The Mosaic Company 100 % Indirect
The mining facilities and exploration properties are owned by or have controlling interest granted to Mosaic Fertilizer LLC, South Ft. Meade Land Management or South Ft. Meade Land Partnership, L.P. (“SFMLP”), each a subsidiary of Mosaic.

Contractors

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Deposit type

  • Sedimentary

Summary:

The entirety of Mosaic’s mineral reserves and resources exist within sedimentary deposits. Economic phosphorite exists in a matrix of gravels, sands, silts and clays that are readily extractible. These economic deposits overlay a carbonate platform where phosphorite is absent. The bedrock and economic matrix are overlain by sands, clays and silts that are easily removed. Limitations of extraction arc the case of excavation, the capacity of the matrix to slurry, the grade of the phosphorite, gangue minerals, the depth of the matrix, and the overburden to be removed.

Deposition of phosphorite occurred in the Miocene and Pliocene epochs. The depositional environment was shallow marine with sea levels of 300 ft. (100 m) or less. Cold phosphate rich waters were upwelled and mixed with warm surface waters creating vigorous biologic activity. Biological remains settled on the sea floor in regional anoxic zones. Phosphate subsequently substituted into calcium carbonate in the form of the mineral francolite. Accessory- mineralization does occur, but it is of little economic consequence. The deposit underwent transport and rework through marine winnowing. Post-depositional rework is extensive and site factors such as hydrology and groundwater geochemistry influence grade and gangue mineralization.

Gangue minerals are generally limestone, dolomitic limestone, iron concretions of varying sizes and competent clays that resist disaggregation by washing. Limestone, dolomite and iron concretions exist as distinct particles that are inseparable through conventional sizing. There is limited intracrystalline substitution of metals within francolite. Most of the gangue minerals arc distinct particles.

Mosaic's Florida phosphate mining currently consists of three producing facilities and three exploration properties. The geology across all the sites is a consistent sequence of sub- aerial and marine sediments. The upper most sediments are lacking in phosphates. The marine sediments and carbonate system that follow contains an economic concentration phosphate. The lower carbonate system is devoid of phosphate. At a site level, the geology is unique enough to warrant different ore management practices based on gangue clast size, composition and concentration.

The South Fort Meade property geology consists of 5 to 50 ft. (1.5 to 15.2 m) of gray to white poorly graded quartz sand with varying abundance of reworked phosphate grains. The economic zone is 0 to 50 ft. (0.0 to 15.2 m) thick, ranging in grade from 30 to 40% P2O5sand comprised gray to gray-blue clayey sands with lincation of red, brown, and white. Phosphate nodules and pellets arc the dominant constituent to gray to gray-blue quartz sands, clays, and phosphate grains and some nodules. The basal units are gray to gray-blue barren clays to phosphatic limestone nibble to beds of phosphatic limestone.

Reserves

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Mining Methods

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Comminution

Crushers and Mills

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Processing

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Production

CommodityUnits2021202020192018201720162015
Phosphate rock kt 0000000000004,2004,4004,2004,300
All production numbers are expressed as concentrate.

Operational metrics

Metrics202120202019201820172016
Ore tonnes mined 0000000000000000000000012,753,300 bcy
Annual production capacity 0005.5 Mt of phosphate rock concentrate5.5 Mt of phosphate rock concentrate5.5 Mt of phosphate rock concentrate

Production Costs

Commodity production costs have not been reported.

Heavy Mobile Equipment

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EV - Electric

Personnel

Mine Management

Source Source
Job TitleNamePhoneProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required May 1, 2024
....................... Subscription required ....................... Subscription required Subscription required May 1, 2024
....................... Subscription required ....................... Subscription required Subscription required May 1, 2024
....................... Subscription required ....................... Subscription required ........... Subscription required Subscription required May 1, 2024
....................... Subscription required ....................... Subscription required Subscription required May 1, 2024

Total WorkforceYear
Subscription required 2023
Subscription required 2022
Subscription required 2021
Subscription required 2020
Subscription required 2019
Subscription required 2018
Subscription required 2017
Subscription required 2016

Aerial view:

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