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Proposed project · unverified items are not established facts

TERRAVEIN METALS

04 — Assay & verification

Every number needs a standard.

We organise existing assay records, then build the basis for each decision through independent assays and recovery testing of representative ore.

Target metals

Gold, silver and three platinum-group metals

  • 79Precious metal
    AuGold

    Corrosion-resistant benchmark precious metal; electronics, jewellery, investment

    Registered mineral

  • 47Precious metal
    AgSilver

    Highest electrical and thermal conductivity; solar and electronics

    Registered mineral

  • 78Platinum group
    PtPlatinum

    Catalysts, hydrogen fuel cells, medical devices

    In 2018 analysis

  • 46Platinum group
    PdPalladium

    Automotive catalysts and electronic components

    In 2018 analysis

  • 45Platinum group
    RhRhodium

    Scarce platinum-group metal; key in emission catalysts

    In 2018 analysis

The registry lists gold, silver and copper; the three platinum-group metals need separate rights review.

Status

Assay & Verification Status

Existing assay records and the upcoming independent verification plan, side by side.

Existing assay record

Per provided documents

2018 Kyonggi University analysis report

Request no.
2018-0129
Requested · reported
2018.08.16 · 2018.08.24
Samples
132A · 132B — Processed ingots · supplied by requester
Method
ICP analysis · microwave acid digestion
Metals
Au · Ag · Pt · Pd · Rh
INGOT

An analysis of processed ingots — not of original ore.

Detailed values will be shared after internal review.

Independent verification plan

Plan

Independent verification on representative ore

Representative ore from the deposit will be assayed by an independent laboratory, with recovery tests per metal to ground the process design.

  • Representative ore samplingPlanned
  • Independent lab assayUpcoming
  • Recovery testworkUpcoming

Target metals: Au · Ag · Pt · Pd · Rh

Assay and verification status by element
ElementExisting recordsIndependent verification plan
2018 report · ingotRepresentative ore samplingIndependent lab assayRecovery testwork
Au GoldIncludedPlannedUpcomingUpcoming
Ag SilverIncludedPlannedUpcomingUpcoming
Pt PlatinumIncludedPlannedUpcomingUpcoming
Pd PalladiumIncludedPlannedUpcomingUpcoming
Rh RhodiumIncludedPlannedUpcomingUpcoming

Sample types

Ore and processed specimens read differently

The same metal assay means different things depending on what was sampled.

Ore surface and texture
Ore surface and texture

ORE

Ore sample

What it is
Rock as taken from the deposit
What values mean
Metal per tonne of ore — the basis for development decisions
No.132 status
Representative sampling and independent assay planned
Metal specimen for testing
Metal specimen for testing

INGOT

Processed specimen (Ingot)

What it is
Metal specimen after separation and processing
What values mean
Composition of a product — not converted to ore grade
No.132 status
Samples 132A and 132B in the 2018 report

Verification workflow

From sampling to disclosure, in five steps

  1. 01

    Sampling & custody

    Location, interval and weight logged; sealed hand-over

    Next step

  2. 02

    Independent laboratory

    Assays at e.g. an ISO/IEC 17025-accredited lab

  3. 03

    Quality control

    Reference materials, duplicates and blanks

  4. 04

    Recovery & mass balance

    Metal by metal, from feed to product

  5. 05

    Disclosure

    Shared with lab name and report number

Recovery & refining

Linking ore to metal through process

Metal-specific processes are finalised by reviewing the technology partner's recovery and refining know-how alongside independent test results.

  1. 01

    Crushing & grinding

    Particle size set for liberation

  2. 02

    Gravity concentration

    Shaking-table tests for concentration ratio

  3. 03

    Flotation option

    Compared or combined, depending on mineralogy

  4. 04

    Recovery & refining

    Metal-specific routes designed after testwork

  5. 05

    Quality assay

    Metal balance across feed, concentrate, product, tailings

  • Mass balance
  • Recovery by metal
  • Product purity
Wet separation test record
Wet separation test record
Intermediate concentrate
Intermediate concentrate

From the business plan and detailed report

View the development planStaged execution planView field & sample photosOre, core, sample and test records