Skip to epithermal vein evidence

Mineralization · Layer 03 of 11

Epithermal Veins.Where structure
becomes mineralized.

Ribbon-like quartz–carbonate bodies occupy faults near the Silver Cup Anticline and host Thor’s polymetallic mineralization.

Vein character
Quartz + carbonate
Metal suite
Ag · Au · Pb · Zn · Cu
BC MINFILE class
I05 polymetallic veins

01 · Vein anatomy

Quartz, carbonate
and sulphides.

Quartz and siderite or ankerite form the vein framework. Sulphide minerals occur within it, recording the polymetallic character of the Thor system.

True Fissure veinPolished thin section showing pyrite, sphalerite and tetrahedrite around a quartz veinlet.
01

Galena

02

Sphalerite

03

Chalcopyrite

04

Pyrite

05

Gold & electrum

02 · Field evidence

From outcrop
to drill core.

At surface, resistant quartz-rich zones can form topographic highs. In core, quartz and massive sulphide reveal the mineralized vein interval directly.

Surface expression

True Fissure.

Quartz and iron-oxide alteration exposed in the open-pit high wall.

Subsurface evidence

Blue Bell drill core.

Quartz and massive sulphide characteristic of Thor’s epithermal deposit.

03 · System context

A continuous trend,
tested in sections.

The epithermal veins form the upper, structurally focused expression of the system on the anticline’s southwest flank. Three-dimensional modelling brings mapped veins and drilling into one spatial framework.

Known linear trend
4 km
Tabular vein body
>2 km
Original Taranis three-dimensional vein interpretation. Labels and source colours are retained.

From target to three-dimensional vein model

  1. Target

    Use mapping, structures and past drilling to choose the intersection angle.

  2. Drill

    Recover depth-controlled core and orient it when practical.

  3. Log

    Record host rock, vein style, sulphides, alteration and structures.

  4. Sample

    Cut intervals across the vein and adjoining altered wall rock.

  5. Quality control

    Insert standards, blanks and duplicates with the samples.

  6. Assay

    Analyze precious and base metals using appropriate laboratory methods.

  7. Model

    Composite results, consider true thickness and update the 3D interpretation.

Continue the atlas · Layer 04 of 11

Lamprophyre.

From mineralized veins to the intrusive dykes that cut the system.

Epithermal Veins · Image detail

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