Fabric Code: tpr283

Exotic Nanumanga hybrid

Hybrid sand temper (mixed terrigenous grains of volcanic sand and calcareous grains of reef detritus). Clinopyroxenes.

Fabric Class:

Calcareous: Dominated by calcareous inclusions.

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 5 0 2 2 0 1 0 0 0 0 0 3 0 0 vitric, microlitic, lathwork
Min 5 0 2 2 0 1 0 0 0 0 0 3 0 0 Tuvalu

Representative slides:

Slide Site Possible OriginCal. QuartzFeldspar Pyroxene Amphibole Opaques OlivineBiotite Muscovite Epidote Garnet/ Spinel Ig./Met. Rocks Sed. Rocks Grog Lithics
WD_14_14 Nanumanga (Nanumanga) Fiji 5 0 2 2 0 1 0 0 0 0 0 3 0 0 vitric, microlitic, lathwork

WD_14_14

Hahula_2 Hahula_2
Sherd 2 from Nanumanga (Nanumanga). Slide WD_14_14 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.

Calcareous hybrid. Possibly from Fiji.


References:

181 Nanumanga, Tuvalu, 1999 (Dickinson, W.)