Fabric Details

Andesitic Arc: Dominated by andesite and basalt lithic fragments, with microlitic, felsitic and vitric textures, and the andesite minerals (plagioclase, clinopyroxene and sometimes hornblende).

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	0	3	2	0	1	0	0	0	0	0	6	0	0	microlitic, vitric, felsitic
Min	0	0	1	1	0	1	0	0	0	0	0	6	0	0	Vanuatu

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_48_11	Maskelyne Islands (Maskelyne Islands)	Maskelyne Islands	0	0	1	2	0	1	0	0	0	0	0	6	0	0	microlitic, vitric, felsitic
WD_48_12	Maskelyne Islands (Maskelyne Islands)	Maskelyne Islands	0	0	2	1	0	1	0	0	0	0	0	6	0	0	microlitic, vitric, felsitic

WD_48_11

MaskelyneMK13 — Sherd MK13 from Maskelyne Islands (Maskelyne Islands). Slide WD_48_11 from Dickinson Collection, Bishop Museum. x4 Magnification PPL (left) XPL (right). Scale bar: 0.5mm. High resolution image (user: Guest pwd: Guest) or full slide in VIMIPO. Imaged by K. Hardy and M. Leclerc, ANU.

Volcanic lithic fragments among which visibly microlitic grains (displaying plagioclase microlites embedded in volcanic glass) and with vitric lithic fragments (brown to red mafic glass) more abundant than felsitic grains.