Fabric Code: tpr379a

Vava'u opaque

Opaque placer from Tonga.

Fabric Class:

Opaque Pyroxenic: Dominated by opaque inclusions, with pyroxenes.

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

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 0 0 2 2 0 6 0 0 0 0 0 2 0 0 microlitic, felsitic, vitric
Min 0 0 2 2 0 6 0 0 0 0 0 2 0 0 Tonga

Representative slides:

Slide Site Possible OriginCal. QuartzFeldspar Pyroxene Amphibole Opaques OlivineBiotite Muscovite Epidote Garnet/ Spinel Ig./Met. Rocks Sed. Rocks Grog Lithics
WD_71_14 Kapa (Kapa) Vava'u 0 0 2 2 0 6 0 0 0 0 0 2 0 0 microlitic, felsitic, vitric

WD_71_14

Kapa_K6 Kapa_K6
Sherd K6 from Kapa (Kapa). Slide WD_71_14 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.

Plain. Opaque.


References:

104 Kapa, Vava'u, Tonga, 1992 (Dickinson, W.)