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 | 2 | 1 | 1 | 4 | 0 | 6 | 1 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | vitric, microlitic |
| Min | 0 | 0 | 1 | 2 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 1 | 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_11 | Apalo (Arawe) | New Britain | 1 | 0 | 1 | 4 | 0 | 5 | 1 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | vitric, microlitic |
| WD_41_13 | Apalo (Arawe) | New Britain | 2 | 0 | 0 | 3 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | vitric, microlitic |
WD_41_11
Moderately to well sorted, fine- to medium-grained, subrounded placer beach sands rich in opaque iron oxide grains of high specific gravity and containing minor admixtures of calcareous reef detritus. Has orthopyroxene in addition to clinopyroxene.
WD_41_13
Moderately to well sorted, fine- to medium-grained, subrounded placer beach sands rich in opaque iron oxide grains of high specific gravity and containing minor admixtures of calcareous reef detritus. Has orthopyroxene in addition to clinopyroxene.