Mineral and Rock Abundances
| None (0) | Minor (1) | Few (2) | Common (3) | Frequent (4) | Major (5) | Very Dominant (6) |
| 0% | 0-5% | 5-15% | 15-30 % | 30-50% | 50-70% | 70-100% |
| Name | Cal. | Quartz | Feldspar | Pyroxene | Amphibole | Opaques | Olivine | Biotite | Muscovite | Epidote | Garnet/ Spinel | Ig./Met. Rocks | Sed. Rocks | Grog | Lithics/ Region |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max | 0 | 1 | 5 | 2 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | microlitic, lathwork, vitric |
| Min | 0 | 1 | 5 | 2 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | Bismarck |
Representative slides:
| Slide | Site | Possible Origin | Cal. | Quartz | Feldspar | Pyroxene | Amphibole | Opaques | Olivine | Biotite | Muscovite | Epidote | Garnet/ Spinel | Ig./Met. Rocks | Sed. Rocks | Grog | Lithics |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WD_41_9 | Garua (Garua) | New Britain | 0 | 1 | 5 | 2 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | microlitic, lathwork, vitric |
| WD_41_10 | Garua (Garua) | New Britain | 0 | 1 | 5 | 2 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | microlitic, lathwork, vitric |
WD_41_9
Generally andesitic, fine- to medium-grained, subangular to subrounded temper sand of probable beach origin. Clinopyroxene dominant, but minor orthopyroxene.
WD_41_10
Generally andesitic, fine- to medium-grained, subangular to subrounded temper sand of probable beach origin. Has orthopyroxene in addition to clinopyroxene.