DOCUMENTATION_FORMAT: Man_Made
SAMPLE_ID: GDS350
MATERIAL_TYPE: Brick
MATERIAL: Brick
FORMULA: Unknown
FORMULA_HTML: Unknown
COLLECTION_LOCALITY: Denver, Colorado
ORIGINAL_DONOR: Gregg Swayze
CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Lab
ULTIMATE_SAMPLE_LOCATION: USGS Denver Spectroscopy Lab
SAMPLE_DESCRIPTION:
This is a dark red colored brick normally used to build walls. It is a portion of a brick that had original approximate dimensions of 19 x 9 x 5.5 cm.
END_SAMPLE_DESCRIPTION.
XRD_ANALYSIS:
END_XRD_ANALYSIS.
COMPOSITIONAL_ANALYSIS_TYPE: None # XRF, EPMA, ICP(Trace), WChem
COMPOSITION_TRACE: None
COMPOSITION_DISCUSSION:
END_COMPOSITION_DISCUSSION.
MICROSCOPIC_EXAMINATION:
END_MICROSCOPIC_EXAMINATION.
SPECTROSCOPIC_DISCUSSION:
The strong absorption edge centered about 0.6 microns gives this brick its dark red color. An absorption at 0.88 microns suggest hematite is the main pigment. A broad absorption centered near 1.4 microns dominates the near-infrared region. G. Swayze.
END_SPECTROSCOPIC_DISCUSSION.
SPECTRAL_PURITY: 1a2_3_4_ # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns