PDS_VERSION_ID        = PDS3
RECORD_TYPE           = STREAM

OBJECT                = TEXT
  PUBLICATION_DATE    = 2009-11-15
  NOTE                = "Sample description"
END_OBJECT            = TEXT
END


High-level Description: Highly crystaline plagioclastic phyric basalt clast
thrown out from Hole-in-the-Ground maar. Clean rock face reveals dense array
of irregularly shaped plagioclastic crystals up to 1-2 cm across in a
fine-grained matrix (averaging 0.19 mm). Sample has the texture of basalt and
random distribution of plagioclaise crystals.

Texture
  Grain morphology and appearance: Irregular, bladed, very-angular
plagioclaise crystals grown in a finer-grained basaltic matrix.
  Grain size and sorting:  Smaller basaltic grains (0.19 mm diameter) support
bladed plagioclaise crystals 1-2 cm in diameter. No sorting evident.
  Grain fabric:  Random orientation; bimodal.

Sediment structure:  None.

Color:  Black, dark and light grey matrix with white plagioclase grains.