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.

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. QuartzFeldspar Pyroxene Amphibole Opaques OlivineBiotite Muscovite Epidote Garnet/ SpinelIg./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 OriginCal. QuartzFeldspar Pyroxene Amphibole Opaques OlivineBiotite 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 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 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 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.)