Fabric Code: tpr193

Boduna feldspathic

Volcanic sand temper with pyroxenes (including orthopyroxene) and rocks of microlitic varieties of andesitic aspect. Clinopyroxene and orthopyroxene present.

Fabric Class:

Feldspathic Pyroxenic: Dominated by feldspar 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 4 3 1 3 1 0 0 0 0 2 0 0 microlitic, lathwork
Min 0 0 4 3 1 2 1 0 0 0 0 2 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
JS_1_3 Boduna (Boduna) New Britain 0 0 4 3 1 2 1 0 0 0 0 2 0 0 microlitic, lathwork
JS_1_6 Boduna (Boduna) New Britain 0 0 4 3 1 3 1 0 0 0 0 2 0 0 microlitic, lathwork, felsitic, vitric
JS_1_1 Boduna (Boduna) New Britain 0 0 4 3 1 3 1 0 0 0 0 2 0 0 microlitic, lathwork
JS_1_2 Boduna (Boduna) New Britain 0 0 4 3 1 2 1 0 0 0 0 2 0 0 microlitic, lathwork
JS_1_4 Boduna (Boduna) New Britain 0 0 4 3 1 2 1 0 0 0 0 2 0 0 microlitic, lathwork
JS_1_5 Boduna (Boduna) New Britain 0 0 4 3 1 2 1 0 0 0 0 2 0 0 microlitic, lathwork

JS_1_3

FEA11 FEA11
Sherd FEA11 from Boduna (Boduna). Slide JS_1_3 from J Specht. 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.

Lapita sherd. Pyroxenes are 1/3 orthopyroxene.


JS_1_6

FEATT FEATT
Sherd FEA/A from Boduna (Boduna). Slide JS_1_6 from J Specht. 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.

Lapita sherd. Pyroxenes are 1/3 orthopyroxene.


JS_1_1

FEA2_a FEA2_a
Sherd FEA2 from Boduna (Boduna). Slide JS_1_1 from J Specht. 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.

Pyroxenes are 1/3 orthopyroxene


JS_1_2

FEA6 FEA6
Sherd FEA6 from Boduna (Boduna). Slide JS_1_2 from J Specht. 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.

Pyroxenes are 1/3 orthopyroxene


JS_1_4

FEA28 FEA28
Sherd FEA28 from Boduna (Boduna). Slide JS_1_4 from J Specht. 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.

Lapita sherd. Pyroxenes are 1/3 orthopyroxene.


JS_1_5

FEA36 FEA36
Sherd FEA36 from Boduna (Boduna). Slide JS_1_5 from J Specht. 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.

Lapita sherd. Pyroxenes are 1/3 orthopyroxene.


References:

149 New Britain, PNG, 1997 (Dickinson, W.)

174 Adwe, Arawe, New Britain, PNG, 1998 (Dickinson, W.)