DOCUMENTATION_FORMAT: MINERAL
SAMPLE_ID: PFL-1
MINERAL_TYPE: Phyllosilicate
MINERAL: Palygorskite (Attapulgite)
FORMULA: (Mg,Al)2Si4O10(OH)*4H2O
FORMULA_HTML: (Mg,Al)2Si4O10(OH)•4H2O
COLLECTION_LOCALITY: Florida
ORIGINAL_DONOR: Clay Mineral Society
CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory
ULTIMATE_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory
SAMPLE_DESCRIPTION:
END_SAMPLE_DESCRIPTION.
XRD_ANALYSIS:
Palygorskite plus quartz (G. Swayze and Ken Esposito, USGS)
END_XRD_ANALYSIS.
COMPOSITIONAL_ANALYSIS_TYPE: None # XRF, EPMA, ICP(Trace), WChem
COMPOSITION_TRACE:
COMPOSITION_DISCUSSION:
END_COMPOSITION_DISCUSSION.
MICROSCOPIC_EXAMINATION:
END_MICROSCOPIC_EXAMINATION.
SPECTROSCOPIC_DISCUSSION:
END_SPECTROSCOPIC_DISCUSSION.
SPECTRAL_PURITY: 1b2_3_4_ # PFL-1 # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns