chlorite-sericite schist

chlorite-sericite schist

[′klȯr‚īt ′ser·ə‚sīt ‚shist]
(petrology)
A low-grade, fine-grained variety of mica schist without biotite.
References in periodicals archive ?
The Yagba and Batis prospects currently cover at least five substantial west-northwest trending gold in soil anomalies (30 ppb Au threshold with more intense eyes of greater than 100 ppb Au) of 1,500-2,500 metres length, that are underlain by an intercalated sequence of banded ironstones, chlorite-sericite schists, amphibolites and quartz-biotite schists (greywackes).
637 oz/ton gold in grab samples of quartz-carbonate veins in chlorite-sericite schists of the Cameron-Pipestone Fault.
Previous trenching on the Paula Cecilia property by Jordex had shown the gold mineralization over a 450 metre strike length to be associated with north-striking, steeply east-dipping quartz- carbonate shear zones within Precambrian chlorite-sericite schists.