The Clinton tufa or travertine deposit is exposed along a railway cut for 180 metres, 4 kilometres southwest of Clinton. It constitutes a mound of tufa, up to 260 metres long, 150 metres wide and at least 7.6 metres thick.

The deposit consists mostly of pale buff to white, roughly bedded, porous tufa that becomes dense (massive) in a few places. Twigs, branches and lenses of mud and sand are incorporated in the tufa along the margins of the mound. Two chip samples, taken in succession over a total width of 7.6 metres in the centre of the railway cut, averaged 54.66 per cent CaO, 0.69 per cent MgO, 0.50 per cent SiO2, 0.18 per cent Al2O3, 0.08 per cent Fe2O3 and 0.055 per cent sulphur (CANMET Report 811, p. 225, Samples 107A, 107B). The deposit is estimated to contain 726,000 tonnes of tufa grading 99 per cent calcium carbonate (Property File - N.D. Lea & Associates Ltd., 1962, page 3-7). A second calculation places reserves at 300,000 tonnes (Assessment Report 8051, page 11).

A small amount, 1460 tonnes, of tufa was produced from two small quarries near the south end of the deposit by Clinton Lime Holdings between 1948 and 1953.

Northwest of the tufa quarries, 300 metres, light to dark grey, very fine-grained limestone, of the Middle to Upper Permian Marble Canyon Formation (Carboniferous to Jurassic Cache Creek Group), outcrops along a series of bluffs. The limestone is contaminated with small chert nodules. A chip sample taken across 122 metres of limestone contained 54.35 per cent CaO, 1.15 per cent MgO, 0.34 per cent insolubles, 0.08 per cent R2O3, 0.03 per cent Fe2O3, 0.025 per cent MnO, 0.022 per cent P2O5, trace of sulphur and 44.02 per cent ignition loss (Minister of Mines Annual Report 1958, page 92, Sample 2).

This limestone was quarried and burnt in an adjacent kiln to produce lime sometime previous to 1944 but no production figures are available.