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Clark et. al. 2003 USGS Open File Report 03-395
Spectral Library splib05a Sample Description

(For further information on spectrsocopy, see: http://speclab.cr.usgs.gov)

TITLE: Red_Coated_Algea_Water RCAW1 DESCRIPT

DOCUMENTATION_FORMAT: VOLATILE

SAMPLE_ID: RCAW1

MATERIAL_TYPE: Oxide + algae

MATERIAL: Water + Algae

FORMULA: H2O + Algae

FORMULA_HTML: H2O + Algae

COLLECTION_LOCALITY: Arkansas River, Leadville, Colorado, USA p> CURRENT_SAMPLE_LOCATION: none

ULTIMATE_SAMPLE_LOCATION: none

ORIGINAL_DONOR: Gregg Swayze

SAMPLE_DESCRIPTION:

Red algae coating rocks under about 10cm in the Arkansas River 100 meters downstream from the confluence with California Gulch which drains heavily mined area with abundant acid mine drainage runoff. This algae is probably causing the precipitation of secondary Fe-oxides rich in heavy metals.

END_SAMPLE_DESCRIPTION.

XRD_ANALYSIS:

Not applicable

END_XRD_ANALYSIS.

COMPOSITIONAL_ANALYSIS_TYPE: NONE # XRF, EM(WDS), ICP(Trace),WChem

COMPOSITION_TRACE: None

COMPOSITION_DISCUSSION:

Not Available

END_COMPOSITION_DISCUSSION.

MICROSCOPIC_EXAMINATION:

Not Available

END_MICROSCOPIC_EXAMINATION.

SPECTROSCOPIC_DISCUSSION:

Spectrum has a narrow chlorophyll band at 0.679 microns.

END_SPECTROSCOPIC_DISCUSSION.

SPECTRAL_PURITY: 1a2_3_4_ # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns

LIB_SPECTRA_HED: where Wave Range Av_Rs_Pwr Comment
LIB_SPECTRA: splib05a r 9595 0.3-2.5µm 200


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