The Black Warrior (L.2446) occurrence is located in the steep bank of Eagle Creek at an elevation of 90 metres and approximately 400 metres from the shore of Pryce Channel on West Redonda Island.
Regionally, the area is underlain by dioritic and granodioritic intrusive rocks of the Jurassic to Cretaceous Coast Plutonic Complex. Age dating from the southern part of West Redonda Island indicates 111 to 113 million years by potassium-argon from biotite and hornblende (Geological Survey of Canada Open File 480). Locally, highly metamorphosed greenstone and limestone of unknown group, formation or age are found in diorite. The strata strikes north with a dip of 65 degrees east.
There are three magnetite occurrences on West Redonda Island. They have almost identical geological settings and are close enough to each other to indicate the possibility of a continuous zone (Open File 1988-28, page 68). The three occurrences are Redonda Iron Mine (MINFILE 092K 039), Black Warrior (MINFILE 092K 040) and Homestake (MINFILE 092K 063).
Locally, magnetite outcrops in a steep creek bank. Prior to 1918, an opencut on the Black Warrior (L.2446) claim, in the bank of Eagle Creek, uncovered a solid magnetite zone 4.3 metres wide, nearly 15.2 metres high and of undetermined length. Magnetite is hosted in skarn-altered limestone and/or greenstone near the contact with diorite.
A sample chipped across the width of the face, 4.3 metres, assayed 64.8 per cent iron, 5 per cent silica and trace phosphorous and sulphur (Minister of Mines Annual Report 1919, page 216).
Work History
In the late 1800s or early 1900s a number of opencuts and a 3.0-metre adit were developed on the occurrence.
During 2007 through 2014, Homegold Resources Ltd. conducted minor programs of prospecting, rock sampling and geological mapping on the area as the West Redonda property.