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 pumacious obsidian. Pumacious
texture consists of many elongated vesicles creating a glassy, frothy matrix
(images 1284, 1285, 1287). Individual shards broken off from vesicle walls may
also be seen (image 1284). Vesicle long axes are as long as several mm.
Smoother zones display a highly reflective, glassy texture with banding
(images 1290-1292). Note the contrast between the glassy, smooth obsidian
texture (at left in image 1283) with the frothy pumacious obsidian (at center
of image 1283) 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, grey.