Sheet QM 378 Paringa : geological resource map of New Zealand 1:250,000

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Nicol, A.; Nathan, S. 1987 Sheet QM 378 Paringa : geological resource map of New Zealand 1:250,000. Lower Hutt: New Zealand Geological Survey. New Zealand Geological Survey report M 151. 38 p.

Abstract: Sheet QM 378 (Paringa) contains a variety of metallic and non-metallic mineral resources, but exploitation of most is unlikely because of low grades and small quantities available. Current mining is restricted to rock for river protection and gravel for road aggregate. Gold and scheelite both occur in quartz veins and in alluvium. All known quartz veins contain very low concentrations. A small amount of gold has been won from blacksand leads on the beaches which also contain sub-economic quantities of ilmenite. Ultrabasic rocks, from eh northern end of the Red Mountain ultramafic belt, contain chromite, nickel (awaruite and pentlandite) and asbestos, but no ore-grade material is known. Mica was mined from pegmatites in the Mataketake Range during World War 2, but further mining is improbable because of lack of demand.The Cretaceous and Tertiary sequence close to the coast contains limestone at several localities which could be quarried for agricultural lime if demand was sufficient. Coal measures are present between Paringa and Ship Creek, but only three mineable seams are known and none has been traced for more than a few tens of metres from known outcrop. All analysed seams are high volatile bituminous coal, very high in ash. There is no hydrocarbon potential in the steeply-dipping and highly deformed sediments on shore, but the poorly known, very thick (>3500m), flat-lying sedimentary sequence offshore is worth further evaluation. Large supplies of gravel for aggregate are available from the rivers and beaches. The Westland Catchment Board maintains a network of small quarries to provide rock for river protection.