Riebeckite +- felsite. Homogeneous, non-porphyritic type of blue felsite; Min Mag, 1950, Vol XXIX, pp. 362-363; slides A - F made. Anal Lab No. 1575 (riebeckite); Anal Mem, 1956, pp. 62-63
Locality details
E end of Beorgs of Uyea, 850 ft SSW of SE corner of Pettadale Water