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 | 5 | 4 | 2 | 2 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | microlitic, felsitic |
| Min | 4 | 3 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | Marianas |
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_6_9 | Unai Chulu (Tinian) | Saipan | 5 | 3 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | microlitic, felsitic |
| WD_6_12 | Kahet (Tinian) | Saipan | 4 | 4 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | felsitic |
| WD_6_17 | Tumon Bay (Guam) | Saipan | 4 | 4 | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | microlitic, felsitic |
WD_6_9
Hybrid sand temper containing unstrained quartz as the most abundant terrigenous grain. Pre-latte.
WD_6_12
Temper with reddish surfaces but uniformly dark and hackly interiors, contains quartz-rich temper sand admixed with calcareous grains.
WD_6_17
Hybrid quartose dactic. Called 443 in report. Imported. pre-latte.