Fabric Code: tpr319

Tanga opaque placer

Group D3, ferromagnesian placer, opaque-rich. Beach placer sands, dominant opaques. Indigenous to Tanga.

Fabric Class:

Opaque Pyroxenic: Dominated by opaque inclusions, with pyroxenes.

Postarc: Clinopyroxenes, plagioclase, and lithics of basalts or shoshonite (a basaltic trachyandesite), dominate.

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 1 2 0 6 1 1 0 0 0 1 0 0 lathwork, microlitic
Min 0 0 0 2 0 6 0 0 0 0 0 1 0 0 Bismarck

Representative slides:

Slide Site Possible OriginCal. QuartzFeldspar Pyroxene Amphibole Opaques OlivineBiotite Muscovite Epidote Garnet/ Spinel Ig./Met. Rocks Sed. Rocks Grog Lithics
WD_30_14 Malendok Islet (Tanga) Tanga 0 0 1 2 0 6 0 0 0 0 0 1 0 0 lathwork, microlitic

WD_30_14

Lif_ETM4016 Lif_ETM4016
Sherd ETM4016 from Malendok islet (Tanga). Slide WD_30_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.

Angkikita. Opaque iron oxide-rich ferromagnesian placer sand temper.


References:

239 Tanga, PNG, 2004 (Dickinson, W.)