Kalanbi Project – SA Cobalt

Twenty Seven Co. Limited (TSC) Kalanbi project in the Western Gawler Craton is  prospective for Cobalt (co), Nickel (Ni), Copper (Cu) and Gold (Au).

KEY POINTS

  • TSC’s Kalanbi  project is located near Ceduna in South Australia and covers part of the Ceduna Intrusive Mafic Complex located in the prospective Western Gawler Craton, SA (Figure 1).
  • Historic exploration in the area has identified several mafic intrusives including the Kalanbi Prospect, where aircore drilling by Pasminco Exploration intersected up to 3400ppm Co from 24 to 26m  and 2600ppm Ni and in gabbroic rocks.
  • TSC acquired Kalanbi to explore primarily for magmatic Ni-Cu sulphides which often contain Co and PGE’s.
  • The Company has identified 12 high priority magnetic anomalies in reprocessed aeromagnetic data for follow-up exploration.
  • The Western Gawler Craton is undergoing a resurgence in exploration activity, with companies such as Western Areas (ASX: WSA) conducting extensive exploration for Ni and Cu around 120km to the west of TSC’s  Kalanbi Project. WSA recently announced the intersection of anomalous Cu and PGE’s at its Thunderdome Prospect1.

SA EXPLORATION RATIONALE

  • Kalanbi has similar aged mafic and ultramafic intrusives to other Proterozoic orogenic belts in Australia that host the Nova-Bollinger and Nebo-Babel Ni-Cu-Co deposits.
  • Kalanbi has had very limited base metals and gold exploration since the late 1990’s and TSC plans to test identified priority targets using modern geophysical and geochemical techniques in combination with targeted aircore drilling .

KALANBI IMPROVED TARGETING

  • Recent reprocessing and interpretation of open file aeromagnetic data at Kalanbi has identified several mafic and ultramafic intrusives prospective for magmatic Ni-Cu-Co sulphides.
  • This includes 12 high ranked mafic to ultramafic intrusive targets based on anomaly strength, proximity to major structures and intrusive shape.
  • The SA Government has just finished flying more detailed aeromagnetic data over the area which should be available late in 2018.  This will provide TSC with a great asset for identifying prospective mafic units in the tenement.
  • The reprocessed images also highlight a large Hiltaba granite fringed by highly magnetic mafic intrusives that may have potential to host hydrothermal style Ni-Cu (PGE) mineralisation analogous to the Avebury Ni deposit in Tasmania (Figure 2).
  • Kalanbi is also prospective for structurally controlled Au mineralisation in Archean to Mesoproterozoic basement.   Historic aircore drilling by Aurora Gold Ltd intersected up to 185ppb Au from 30 to 32m at the bottom of the hole associated with pyrite and sericite alteration in granodiorite in a significant north easterly trending structure (Figure 2).
Kalanbi Project Map TwentySevenCo

Figure 1. (click to expand)

Figure 2. (click to expand)