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a.1.See Feldspathic.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
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Its mineralogical constitution is not simple; in some parts the rock is of a cherty, in others of a felspathic nature, including thin veins of serpentine.
PETROLOGY (rock type): A= mudstone/siltstone; B= laminated One grained flaggy sandstone; C = fine grained felspalhic grit/greywacke; Ca = more felspathic type; Cc=micaceous greywacke/bedded flagstone; Cb= quartzitic greywacke; D = quartzitic grit; E= quartzite; F= exotic(glacial erratic cobble - incl non-local quatzites and igneous rocks eg.