The 6 Mile tufa occurrences are located on the southern side of the Kicking Horse River, approximately 8 kilometres east of Golden. A number of smaller tufa showings occur on the Eight, Nine, Eleven and Thirteen claims up slope from the 5 & 6 Mile occurrences. In 2003–-2004, the claims were explored by Golden Rock Products Inc.

The area is underlain by a northwest-trending belt of dolomite of the Middle Ordovician to Silurian Beaverfoot Formation. Locally, the dolomite is thrust faulted against limestone of the Upper Cambrian to Middle Ordovician McKay Group to the west and flanked by quartzite of the Middle to Upper Ordovician Mount Wilson Formation to the east.

The 6 Mile occurrence is geologically similar to the 5 Mile occurrence, and is to the west but of a younger age and smaller in size. The tufa averages 1 metre thick, 50 metres wide and has been traced uphill for over 100 metres before thinning out.

The block covers 1875 square metres with an average depth of 1 metre yielding 1700 cubic metres of useable tufa (Assessment Report 27223).

In 2017, 92 Resources Corp. completed a rock sampling program on the property. A total of 60 metallurgical and 53 frac sand samples were taken from three locations on the property containing the occurrence. Highlighted results included zones of 99 to 99.5 percent silica content (Lindinger, L. (2018-03-28): Technical Report of Exploration Activities on the Zim Frac-Wil Property).