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	2	4	3	0	2	0	0	0	0	0	5	0	0	microlitic, vitric, chert, felsitic
Min	0	0	3	1	0	1	0	0	0	0	0	4	0	0	Vanuatu

Representative slides:

Slide	Site	Possible Origin	Quartz	Feldspar	Pyroxene	Opaques	Ig./Met. Rocks	Lithics
WD_48_3	Ambae (Ambae)	Ambae	2	3	2	1	5	microlitic, vitric, chert, felsitic
WD_48_1	Ambae (Ambae)	Ambae	1	4	1	1	4	microlitic, vitric, chert, felsitic
WD_48_4	Ambae (Ambae)	Ambae	0	3	2	2	5	microlitic, vitric, felsitic
WD_53_20	Erromango (Erromango)	Ambae	0	3	3	2	5	microlitic, vitric, felsitic

WD_48_3

AmbaeAM8 — Sherd AM8 from Ambae (Ambae). Slide WD_48_3 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.

Basaltic sand, with chalcedony quartz lacking hornblende and containing volcanic lithic fragments that are dominantly microlitic, contanis plagioclase feldspar grains, and clinopyroxene.

WD_48_1

AmbaeAM1 — Sherd AM1 from Ambae (Ambae). Slide WD_48_1 from Dickinson Collection, Bishop Museum. x4 Magnification PPL (left) XPL (right). Scale bar: 0.5mm. High resolution image in VIMIPO (user: Guest pwd: Guest). Imaged by K. Hardy and M. Leclerc, ANU.

Basaltic sand, with chalcedony quartz lacking hornblende and containing volcanic lithic fragments that are dominantly microlitic, contanis plagioclase feldspar grains, and clinopyroxene.

WD_48_4

AmbaeAM4 — Sherd AM4 from Ambae (Ambae). Slide WD_48_4 from Dickinson Collection, Bishop Museum. x4 Magnification PPL (left) XPL (right). Scale bar: 0.5mm. High resolution image in VIMIPO (user: Guest pwd: Guest). Imaged by K. Hardy and M. Leclerc, ANU.

Basaltic sand lacking hornblende and containing volcanic lithic fragments that are dominantly microlitic, contanis plagioclase feldspar grains, and clinopyroxene.