Slide: IL_1_20

Madang style. CAUTION: Section less than 30microns. Angular feldspar and chert grains make up less than 10% of the sherd and are up to 0.4 mm in length. Volcanic rock fragments are found in two forms, one form consists of long thin plagioclase laths and skeletal iron oxides set in altered glass. The other form contains eutectic intergrowths of quartz and feldspar. The sherd also contains red ferruginized c lasts, iron oxides and minor pyroxene. The clay is red brown.

Mineral and Rock Abundances

Fabric: tpr460 - Madang feldspathic lithic

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%
Cal. QuartzFeldspar Pyroxene Amphibole Opaques OlivineBiotite Muscovite Epidote Garnet/ Spinel Ig./Met. Rocks Sed. Rocks Grog Lithics
0 2 4 1 0 1 0 0 0 0 0 4 0 0 microphaneritic, microlitic, lathwork

Images

Sio16_1 Sio16_1
Sherd 16/1 from Sio (New Guinea). Slide IL_1_20 from I Lilley. 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.

Sherd: 16/1

None

Period: None wikidata:

Site: Sio (New Guinea)

Suspected origin site: Madang

References:

Prehistoric exchange in the Vitiaz Strait, Papua New Guinea (Lilley, I.)