Taieri, sheet QM419 : geological resource map of New Zealand 1:250,000

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Robertson, R.; Rabone, S.D.C. 1986 Taieri, sheet QM419 : geological resource map of New Zealand 1:250,000. Lower Hutt: New Zealand Geological Survey. New Zealand Geological Survey report M 141. 18 p.

Abstract: The Taieri sheet area has a wide variety of mainly small, widely scattered mineral, coal, and aggregate deposits. While gold (alluvial and lode) has been historically significant, aggregate and coal are currently the most important commodities. Aggregate resources include tertiary volcanics (Dunedin Volcanic Complex), Upper Palaeozoic-Mesozoic greywacke and schist, and Holocene alluvial gravels. Large resources of coal (832 million tonnes in-ground) are present in the Kaitangata coalfield within the Cretaceous Taratu Formation. Auriferous quartz lodes worked mainly prior to 1880 have yielded more than 500 kg of gold, while alluvial gold production from the lower Eocene Blue Spur Conglomerate is more than 16 tonnes. Other metallic minerals produced include scheelite, stibnite, cinnabar, copper, and manganese.in addition to aggregate and coal, future potential exists for alluvial gold and phosphate. Smaller lode deposits of metallic minerals have limited current potential but could represent minor useful local resources in the future.