Allanite can contain appreciable cerium, lanthanum and yttrium. 1.5 Sphene Present as associated ragged grains. Again, significant cerium and yttrium occurs in some sphenes. As scattered small crystals. The dark green band.
Accessory minerals are prehnite, garnet, sphene, apatite and pyrite.
The rock also tends to have a somewhat vuggy character containing irregular voids with pale pink material. Reddish-brown iron staining is common in weathered surfaces and in vugs. The amphibole rich areas are up to several millimetres in size and would represent the greenish coloured angular clast-like bodies noted in the hand specimen. The paler coloured patches and vein-like bodies in hand specimen are plagioclase rich areas. The plagioclase crystals have somewhat irregular xenomorphic shapes with a small proportion exhibiting weakly prismatic shapes.