The Nitre occurrence is located on a cliff face in the Tenakihi Range, approximately 65 kilometres northwest of the community of Germansen Landing.

A showing of nitre (potassium nitrate) has been documented on a cliff face in the Tenakihi Range. An efflorescent encrustation composed mainly of nitre, calcium sulphate and minor calcite forms during dry periods on a 1.5-metre section of impure, dark grey, fine-grained, slaty limestone and blue-grey, friable, sericitic phyllite on a 100-metre long cliff face. Hostrocks are part of the Neoproterozoic Ingenika Group which consists of quartz chlorite schist, sericite schist, quartzite, slate, phyllite, quartzitic conglomerate, minor limestone, chloritoid schist, and tourmaline zoisite schist (Geological Survey of Canada Memoir 274, page 69).