The Conversation (0)
Green Critical Minerals Ltd (“GCM” or “the Company”) which holds earn-in rights for up to 80% of the advanced Ultra High Purity McIntosh Graphite Project (see CML’s announcement on 15 June 2022) is thrilled to announce a major breakthrough in our exploration efforts at the Emperor target. Our latest discovery, intercepted in hole GCMDD003, has revealed up to 280m of graphitic schist. Hole GCMDD003 has successfully delineated a significant extension at depth to the known mineralised package at Emperor, uncovering a previously untested repeat (see Figure 1 below). Drill hole GCMDD003 is the deepest hole completed at the Emperor deposit and outlines the potential to delineate this repeat mineralisation along the entire strike length of the Emperor resource.
Highlights
- Up to 280m thick Graphitic Schist intercepted at the Emperor target.
- Discovery hole GCMDD003 has delineated a significant extension to the high purity Emperor deposit. A previously untested repeat of the known mineralised package has now been discovered.
- The discovery of a repeat mineralised package at Emperor has the potential to substantially expand the resource.
- The graphitic schist package at Emperor is now over 1km in strike, 250m in width and up to 300m thickness, which has the potential to become a significant bulk mining opportunity. The width and thickness of the emperor graphitic schist unit is unparalleled compared to other more tabular vertical dipping deposits.
- In addition to the newly discovered repeat mineralised package, further potential is also held at the interpreted extension of the Emperor fold hinge limbs open to both the east and west.
- Emperor represents a unique graphite deposit that has been hydrothermally upgraded to produce ultra-low impurity premium flake. The hydrothermal fluids have acted in a way to increase the purity and recrystallise the graphite into an almost perfect hexagonal shaped graphite which attracts a premium.
Figure 1 Emperor Transform Cross Section of GCMDD003 (Section Line A)
Graphite mineralisation is interpreted to form bands concordant with foliation in the schist. The abundance of mineralisation in each 1m interval has been estimated based on visual observations recorded by the onsite geologist (see Table 1).
* The Company cautions that visual estimates of mineral abundance should never be considered a proxy or substitute for laboratory analyses where concentrations or grades are the factor of principal economic interest. Visual estimates also potentially provide no information regarding impurities or deleterious physical properties relevant to valuations.
Figure 2 Emperor Plan view showing electro magnetic high with 2017 PFS pit design and cross section line A.
The mineralised package at Emperor is now over 1km in strike, 250m in width and up to 300m thickness. The unique folded nature of the emperor deposit has created an accumulated package of graphitic schist which lends itself to favorable strip ratios compared to vertical tabular deposits that are commonly found elsewhere. This represents the potential for a substantial bulk mining opportunity (see Figure 2).
What further sets Emperor apart from other graphite deposits is its exceptional quality. Through hydrothermal upgrading, the deposit has been transformed into an ultra-low impurity premium flake graphite. This process has significantly increased its purity, resulting in almost perfect hexagonal-shaped graphite—a highly sought-after attribute in the market. The intrinsic purity will potentially enable GCM to be in the lowest quartile of purification costs.
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