Fabric Code: tpr183

Northcoast PNG calcareous type A

Reef detritus. Calcareous and grains of chrome spinel (translucent red, isotropic), diagnostic of derivation from peridotite.

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 6 1 1 0 0 0 0 0 0 0 1 0 0 0 na
Min 6 1 1 0 0 0 0 0 0 0 1 0 0 0 PNG

Representative slides:

Slide Site Possible OriginCal. QuartzFeldspar Pyroxene Amphibole Opaques OlivineBiotite Muscovite Epidote Garnet/ Spinel Ig./Met. Rocks Sed. Rocks Grog Lithics
WD_81_2 Watinglo (Aitape Coast) unknown 6 1 1 0 0 0 0 0 0 0 1 0 0 0 na

WD_81_2

WATA5-2 has a full slide scan available. Imaged by K. Hardy and M. Leclerc, ANU.

Calcareous and grains of chrome spinel (translucent red, isotropic), diagnostic of derivation from peridotite.


References:

279 Watinglo, Lachitu, PNG, 2009 (Dickinson, W.)