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Brazil
Tres Estradas Project

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 Location:
43 km E from Dom Pedrito, Brazil

  Project Contacts:
Level 12, 680 George Street
Sydney
New South Wales, Australia
2000
Phone  ...  Subscription required
Fax+61-2-9287-0350
EmailEmail
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Production
  • Reserves
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  • Personnel
  • Filings & News

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Overview

StagePermitting
Mine TypeOpen Pit
Commodities
  • Phosphate rock
Mining Method
  • Truck & Shovel / Loader
Mine Life18 years (as of Jan 1, 2020)
Latest NewsAguia Private Placement Closes     August 15, 2019


Owners

Source: p. 11
CompanyInterestOwnership
Aguia Resources Ltd. 100 % Indirect
Águia holds 100% interest in the three mineral rights permits covering the Três Estradas Phosphate Project area.

Deposit Type

  • Carbonatite hosted
  • Intrusion related


Summary:

Três Estradas Phosphate Deposit is located between two hydrographic basins: the Santa Maria River Basin and the Camaquã River Basin. Elevation for the Três Estradas Phosphate Project area ranges from 249m to 367m with a mean elevation of 348m MASL for the deposit area.

The Três Estradas deposit consists of an elongated carbonatite intrusion (metacarbonatite and amphibolite) with a strike of 50° to 60°. The meta-carbonatite and amphibolite form a tightly folded sequence with limbs dipping steeply from 70° to vertical (90°). The surface expression of the intrusion is approximately 2.5 km along strike with a width of approximately 300m. The Late Archean to Early Proterozoic intrusion is intensely recrystallized and metamorphosed to amphibolite assemblages. The carbonatite intrusion is bound mostly by biotite gneiss along with meta-syenite along its northeast and southeast boundaries.

Phosphate mineralization, occurring as the mineral apatite (Ca5(PO4)3(F,Cl,OH)), is the primary mineralization of economic interest at Três Estradas. Apatite is the only phosphatebearing mineral occurring in the carbonatites. At Três Estradas phosphate mineralization occurs in both fresh and weathered meta-carbonatite and amphibolite. Phosphate also becomes highly enriched in the overlying saprolite.

The targeted area consists of an elongated carbonatite intrusion with a strike of 50° to 60° similar to that of the Cerro dos Cabritos Fault. Shear sense indicators suggest a sinistral sense of motion along this fault. The carbonatite and amphibolite form a tightly folded sequence with limbs dipping steeply from 70° to vertical (90°). The surface expression of the intrusion is approximately 2.5 km along strike with a width of approximately 300m.

With the exception of meta-syenite along its northeast and southeast boundaries, the carbonatite is surrounded by biotite gneiss of the SMCGC. The carbonatite is tightly folded and strongly foliated, resulting in a well-developed gneissic texture. Locally, abundant subparallel quartz veins are present resulting in elevated topographic ridges as the quartz is more resistant to weathering than the surrounding country rock. These veins range from a few centimetres to a couple of meters in width and can be up to 300m long. Also flanking the carbonatite is a minor unit of meta-tonalite with intercalated meta-carbonatite and amphibolite. The unit is characterized by gneissic banding, a grey-green colour on weathered surfaces and a recrystallized granular.
texture.


Mining Methods

  • Truck & Shovel / Loader


Summary:

Introduction The Três Estradas Project will be an open pit operation utilizing an own mining fleet with a hydraulic excavator 2.0m3 of capacity and 10m3 haul trucks, associated with correspondent ancillary equipment. The mine planning model adopted is a “diluted” model, adding approximately 5% dilution and 95% of recovery to the source model.

The disposal of waste rock will be executed on an area close to the pit. The site shall be adequately prepared to include drainage at its base and channels to direct the flow of water with the aim of aiding geotechnical stability and mitigating the erosion of the stockpiled material. The operation of this phase, in accordance with the ascending method, shall begin during the construction of the heap at the base of this area. Waste rock will be disposed by truck, which will then be uniformly distributed and levelled by an operator using a tractor. The procedure is then repeated, stacking another bank above the original one, while maintaining a ramp for the trucks to be able to access the area.


Crushing and Grinding
Crusher / Mill TypeModelSizePowerQuantity
Impact crusher 1
Hammer mill 4

Summary:

The ROM will be transported by 10m3 trucks from the mine to the stockpile area. The ROM will be reclaimed from the stockpile with a front-end loader and a truck to feed the processing plant.

Considering the production of a DANF product during the Project Phase 1 the facility will consist of simple processing plant with the following flow:

• The transported material is dumped into a vibrating feeder with capacity of 120 tph

• Crushing circuit – Consisting of a primary impact crusher, hopper, and conveyance to mills

• Milling circuit – Consisting of 4 hammer mills in parallel, hoppers and conveyance to the
warehouse.


Processing


Recoveries & Grades:

CommodityParameterAvg. LOM
P2O5 Recovery Rate, %  ......  Subscription required
P2O5 Head Grade, % 8.76
Subscription required - Subscription is required.

Projected Production:

CommodityUnitsAvg. AnnualLOM
P2O5 kt 2694,855
All production numbers are expressed as danf.

Operational Metrics:

Metrics
Stripping / waste ratio  ......  Subscription required
Waste tonnes, LOM  ......  Subscription required
Ore tonnes mined, LOM  ......  Subscription required
Annual production capacity  ......  Subscription required
Tonnes processed, LOM  ......  Subscription required
* According to 2020 study.
Subscription required - Subscription is required.

Reserves at February 11, 2020:

CategoryTonnage CommodityGrade
Measured 36,196 kt P2O5 4.01 %
Measured 36,196 kt CaO 33.59 %
Measured 36,196 kt Apatite 9.5 %
Measured 36,196 kt Calcite 59.95 %
Indicated 47,014 kt P2O5 4.18 %
Indicated 47,014 kt CaO 31.72 %
Indicated 47,014 kt Apatite 9.91 %
Indicated 47,014 kt Calcite 56.63 %
Measured & Indicated 83,210 kt P2O5 4.11 %
Measured & Indicated 83,210 kt CaO 32.53 %
Measured & Indicated 83,210 kt Apatite 9.73 %
Measured & Indicated 83,210 kt Calcite 58.07 %
Inferred 21,845 kt P2O5 3.67 %
Inferred 21,845 kt CaO 33.62 %
Inferred 21,845 kt Apatite 8.69 %
Inferred 21,845 kt Calcite 60.01 %

Commodity Production Costs:

CommodityUnitsAverage
Cash costs Phosphate rock AUD  ......  Subscription required *
Assumed price Phosphate rock AUD  ......  Subscription required *
* According to 2020 study / presentation.
Subscription required - Subscription is required.

Operating Costs:

Units2020
OP mining costs ($/t mined) AUD 2.32 *
Processing costs ($/t milled) AUD  ......  Subscription required
* According to 2020 study.
Subscription required - Subscription is required.

2020 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Total CapEx $M AUD  ......  Subscription required
OP OpEx $M AUD  ......  Subscription required
Processing OpEx $M AUD 23.4
G&A costs $M AUD 16.2
Total OpEx $M AUD  ......  Subscription required
Income Taxes $M AUD  ......  Subscription required
Gross revenue (LOM) $M AUD  ......  Subscription required
EBITDA (LOM) $M AUD  ......  Subscription required
After-tax Cash Flow (LOM) $M AUD  ......  Subscription required
After-tax NPV @ 8% $M AUD  ......  Subscription required
After-tax IRR, %  ......  Subscription required
After-tax payback period, years  ......  Subscription required
Subscription required - Subscription is required.

Proposed Heavy Mobile Equipment as of February 11, 2020:
HME TypeModelSize
Excavator ....................... Subscription required 2 cu. m
....................... Subscription required ....................... Subscription required ....................... Subscription required
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Nov 27, 2020
....................... Subscription required ....................... Subscription required Subscription required Nov 27, 2020
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2018
................................... Subscription required 2018
Subscription required - Subscription is required.

News:

NewsDate
Aguia Private Placement Closes August 15, 2019
CORRECTION – Aguia Resources: Tres Estradas Environmental Permitting Update and New Copper Exploration Results May 6, 2019
Aguia Private Placement Closes April 12, 2019
Aguia Private Placement Oversubscribed and Priced at a Premium March 31, 2019
Aguia Enters Final Phase of Três Estradas Environmental Permitting January 14, 2019

Aerial view:

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