Fabric Code: tpr293b

Samoan microlitic trachytic

Trachytic rather than basaltic rocks. Feldspar-rich pilotaxitic/microlitic lithic fragments. Anorthoclase, plagioclase, oxyhornblende and clinopyroxene. Probably from Fagaloa Bay east of Falefa Valley.

Fabric Class:

Felsitic-Microlitic: Dominated by felsitic and/or microlitic lithic inclusions.

Oceanic Basalt Trachytic Variant: Mainly contain olivines, clinopyroxenes and plagioclase, and have lathwork and mafic vitric lithic fragments.

Sites:

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	1	0	2	1	2	0	1	0	0	0	0	6	0	0	microlitic, lathwork, vitric
Min	0	0	0	0	0	0	0	0	0	0	0	5	0	0	Samoa

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_25_1	Vailele (Upolu)	Samoa	0	0	2	1	1	0	0	0	0	0	0	6	0	0	microlitic, lathwork
WD_25_8	Sasoa’A (Upolu)	Samoa	0	0	1	0	0	0	0	0	0	0	0	6	0	0	microlitic, lathwork
WD_25_5	Jane's Camp (Upolu)	Samoa	0	0	2	0	0	0	1	0	0	0	0	6	0	0	microlitic, lathwork

WD_25_1

Vailele_16_2 — Sherd 16-2 from Vailele (Upolu). Slide WD_25_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.

Vailele_16_2 — Sherd 16-2 from Vailele (Upolu). Slide WD_25_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.

Trachytic microlitic.

WD_25_8

Sasoaa_25_4 — Sherd 25-4 from Sasoa’a (Upolu). Slide WD_25_8 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.

Sasoaa_25_4 — Sherd 25-4 from Sasoa’a (Upolu). Slide WD_25_8 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.

Trachytic.

WD_25_5

JanesCamp_FS84 — Sherd SuFL-1 FS-84 from Jane's Camp (Upolu). Slide WD_25_5 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.

JanesCamp_FS84 — Sherd SuFL-1 FS-84 from Jane's Camp (Upolu). Slide WD_25_5 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.

Trachytic microlitic.

References:

Temper Sands in Prehistoric Oceanian Pottery (Dickinson, W.)

Petchey MA Thesis 1995 (Petchey, F.)