Overview
Stage | Permitting |
Mine Type | Underground |
Commodities |
|
Mining Method |
- Sub-level stoping
- Longhole stoping
- Room-and-pillar
|
Mine Life | 2.6 years (as of Jan 1, 2018) |
Croinor Gold is a development project with an underexplored district scale land package. Croinor Gold is past producing mine; close to all infrastructure. Current steps: seeking financing package or partnership.
Monarch Mining Corporation has a certificate of authorization for mine operations at the Croinor Property. |
Source:
Monarch Mining Corp. beneficially owns 100% of the voting shares of X-Ore Resources Inc. X-Ore currently holds the Croinor Property.
MONTREAL, July 28, 2023 - Monarch Mining Corporation announces the closing of the sale of its 100% interest in the Croinor gold property to Probe Gold Inc., as disclosed in its press release dated July 13, 2023.
Contractors
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Summary:
The Croinor Property deposit is hosted by the synvolcanic Croinor Property sill, which has a general attitude of N295° and dips north at 50°–65°. The sill ranges from 60 to 120 m in thickness over a strike length of approximately 3 km. It can be observed on several outcrops and is intersected by numerous drill holes. Near the Croinor Property deposit, the sill is in direct contact with pyroclastic units. Elsewhere, the sill is in contact with fragmental volcanic rocks, and sometimes with massive volcanic rocks. Generally, the northern and southern contacts of the sill with the enclosing volcanic rocks are clearly observed by the sudden appearance or disappearance of pyroclastic fragments. The northern and southern contacts are generally foliated parallel to the regional S2 schistosity. They are strongly foliated to sheared in places, but practically undeformed in others
The Croinor Property deposit gold-rich lenses are made of quartz-carbonate-tourmaline-pyrite veins, altered pyritic host rock material, and/or tectonic breccia (pyritic host fragments within a quartz-carbonate tourmaline-pyrite vein). These mineralized lenses are spatially controlled by reverse-oblique shear zones that crosscut and displaces both the lenses and its dioritic host. A hydrothermal alteration halo surrounds these structures. Zoning begins with an epidote-chlorite envelope that gradually changes into a chlorite carbonate zone closer to the shear. Within the shear structure itself, the ho ........

Mining Methods
- Sub-level stoping
- Longhole stoping
- Room-and-pillar
Summary:
Two mining methods are proposed to accommodate the geometry of the mineralization: sublevel long-hole retreat and conventional room and pillar.
Long-hole method
The long-hole stopes will be mined from 3-m-high levels at 15 m vertical intervals. For stope heights exceeding 13 m, the maximum stope panel was defined as 15 m long. It is assumed that only a small number of stopes will be backfilled and that some pillars will be left between panels and mining horizons. For stope heights of 13 m or less, longer stope panels were considered on a case by case basis.
The method consists of drilling and blasting 64 mm diameter holes in a pattern parallel to the walls. Holes are drilled upward or downward depending on the context.
The development sequence consists of accessing the mineralized zone and excavating a level cut in the mineralized zone. The mining sequence will require the excavation of a raise opening, which is either developed as a conventional raise or as a drop raise when a top access is available. Once development is completed, the mineralized zone is surveyed with precision for the preparation of the drilling and blasting pattern.
Room and pillar
In some areas, room and pillar was a technically better choice than long-hole due to the ore body angle lower than 43°. The proposed room and pillar stope configuration is based on typical industry practices for currently operating mines in deposits with similar v ........

Source:

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Flow Sheet:
Summary:

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Projected Production:
All production numbers are expressed as metal in doré.
Operational Metrics:
Metrics | 2022 | |
Daily milling capacity
| ......  | |
Daily ore mining rate
| ......  | 575 t * |
Daily milling rate
| ......  | 575 t * |
Waste tonnes, LOM
| ......  | 399,875 t * |
Ore tonnes mined, LOM
| ......  | 602,994 t * |
Total tonnes mined, LOM
| ......  | 1,002,869 t * |
Tonnes milled, LOM
| ......  | 602,994 t * |
* According to 2018 study.
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Reserves at June 17, 2022:
The mineral resources were compiled using cut-off grades of 4 g/t Au for stopes mined by the long-hole method and 5.1 g/t Au for stopes mined by room & pillar.
Category | Tonnage | Commodity | Grade | Contained Metal |
Measured
|
97,700 t
|
Gold
|
6.24 g/t
|
19,600 oz
|
Indicated
|
805,900 t
|
Gold
|
6.5 g/t
|
168,300 oz
|
Measured & Indicated
|
903,600 t
|
Gold
|
6.47 g/t
|
187,900 oz
|
Inferred
|
200,100 t
|
Gold
|
6.19 g/t
|
39,800 oz
|
Corporate Filings & Presentations:
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