PDS_VERSION_ID        = PDS3
RECORD_TYPE           = STREAM

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

High-level Description:  Scoria clast 2 cm across, covered in precipitated
silica-rich opal. Scoria is angular, with rounded edges and very vesicular.
This clast is dark grey with rust-red stains. Vesicles are evenly-distributed
throughout the clast and are nearly spherical, except in areas where they
interfere with each other. Vesicles are as large as 2 mm, although most are
around 1 mm. Opal is primarily concentrated on ridges between vesicles, and
occurs in hemispherical clusters.

Texture
  Grain morphology and appearance:  Very vesicular, angular scoria with
rounded edges. Vesicles are evenly-distributed throughout the clast and are
nearly spherical, except in areas where they interfere with each other.
Vesicles are as large as 2 mm, although most are around 1 mm. Whitish coating,
primarily concentrated on ridges between vesicles, occurs in hemispherical
clusters.
  Grain size and sorting: No individual grains visible.
  Grain fabric:  None visible.

Sediment structure:  None.

Color:  Black or dark grey, with rust-red stains; whitish precipitate coats
small portions of the surface.