PDS_VERSION_ID        = PDS3
RECORD_TYPE           = STREAM

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


High-level Description: Loose clast of partly devitrified obsidian. Focus in
the images is on an undulating band of alternating vitreous and vesicular
texture. Volatiles collect in frothy, bubbly bands.

Vesicular zone consists of many elongated vesicles creating a frothy matrix
(image 1301, 1302). Vesicle long axes average 2 mm. Darker, smoother zones
display a highly reflective, vitreous, glassy texture (image 1299). Note the
contrast between the glassy, smooth obsidian texture with the frothy pumacious
obsidian in adjacent zones in the sample.

Texture
  Grain morphology and appearance: Grains are sub-resolution.
  Grain size and sorting: Grains are sub-resolution. No sorting evident.
  Grain fabric: Flow structure is layered but grains are sub-resolution.

Sediment structure:  None.

Color:  Black, white.