The modal compositions were measured by counting 2,000 points with a grid interval of 0.1 mm for each sample.
The mineral assemblages and their modal composition are of quartz (35%), muscovite (25%), biotite (15%), garnet (10%), chlorite (6%), sillimanite (3%), plagioclase (3%) and K-feldspar. 2.
The mineral assemblages and their modal composition are quartz (35%), muscovite (25%), biotite (15%), garnet (10%), chlorite (6%), sillimanite (3%), plagioclase (3%) and K-feldspar.
The horn effect and the modal composition are relatively unaffected and have minor effects on the radiated noise.
The two-diopside zone does not coincide with reaction zone 1. Reaction zones 1 and 2 in this rock are defined by their modal compositions, whereas the two-diopside zone is defined by the occurrence of composite diopside grains.
Conditions on composition are many.
The modal compositions indicate that the BPS is richer in albite (43 and 69 vol% in outcrops 1 and 2, respectively) and is generally poorer in muscovite (18 and 4 vol%) and quartz (29 and 8 vol%) than the UPS.
Modal compositions described in Table 1 were used to calculated seismic anisotropy.
Modal compositions noted in Table 1 were used to calculated seismic anisotropy.
