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Mississippi Valley Type (MVT) and Carbonate Replacement Deposit (CRD) Prospects
Strategic owns 100% interests in eight properties where lead-zinc mineralization is hosted in carbonate rocks (limestone or dolomite), and it has a royalty interest in a ninth property of this type (Cord). The prospects include relatively low temperature MVT mineralization, high temperature CRD mineralization and related vein mineralization.
Strategic also owns 100% interests in four other CRD prospects where gold is the main metal of interest. Exploration of these gold targets is modeled on a deposit that was recently discovered by ATAC Resources Ltd. In the Keno Hill District of central Yukon.
MVT deposits are epigenetic, carbonate-hosted, predominantly zinc-lead sulphide bodies that formed from upwelling of warm, saline, metalliferous hydrothermal fluids. They dominantly occur in dolostone as stratabound open-space fillings, collapse breccias and/or replacement of reactive carbonate rocks. MVT deposits are not directly linked to intrusive activity.
CRD are formed near granitic intrusions and comprise pods, lens and pipe-shaped lead-zinc-silver±copper±gold sulphide bodies in carbonate host rocks. Most CRDs are located in fold-thrust belts on major structural domes, arches or anticlines, which act as traps for metalliferous fluids. Many of these deposits are capped by volcanic rocks or other impermeable and unreactive units.
In general, MVT mineralization is relatively silver poor while CRD mineralization is usually silver enriched.
Attractive drill targets have been defined on five of Strategic's MVT or CRD prospects, where zinc is the major metal, however, Strategic is not planning major drill programs at any of those properties until zinc prices increase. Surface work is planned at all of Strategic's CRD prospects where gold is known or suspected to occur.
Click for more information on MVT or CRD
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