(For further information on spectroscopy, see:
TITLE: Wxl Kaolinite + others CU91-200A DESCRIPT
MIXTURE: Wxl kaolinite + quartz + feldspar
FORMULA: Al2Si2O5(OH)4 + Si02 + feldspar
FORMULA_HTML: Al2Si2O5(OH)4 + Si02 + feldspar
COLLECTION_LOCALITY: Eastern Alteration Center, Cuprite, Nevada, USA
ORIGINAL_DONOR: Gregg Swayze
COLLECTION_LATITUDE: N37 31.60' # degrees and decimal minutes (N or S)
COLLECTION_LONGITUDE: W117 10.48' # degrees and decimal minutes (W or E) P> DATUM: NAD27 # coordinate datum
CURRENT_SAMPLE_LOCATION: U.S.G.S. Denver Spectroscopy Laboratory
ULTIMATE_SAMPLE_LOCATION: U.S.G.S. Denver Spectroscopy Laboratory
This sample contains well-crystallized kaolinite and is from the middle of what is informally known as "Kaolinite Hill" located at the southeastern end of the eastern relict alteration center. The sample was collected from an altered Tertiary tuff involved in a hydrothermal event about 7.6 Ma.
Well-crystallized kaolinite, quartz, feldspar, and alunite. (trace).
COMPOSITIONAL_ANALYSIS_TYPE: XRF # XRF, EM(WDS), ICP(Trace), WChem
The spectrum has absorptions characteristic of well crystallized kaolinite. Quartz and feldspar have no absorptions in this sample. No trace of alunite is evident in the spectrum of this sample.
See: Swayze, G.A., 1997, The hydrothermal and structural history of the Cuprite Mining District, southwestern Nevada: an integrated geological and geophysical approach: unpublished Ph.D. Dissertation, University of Colorado at Boulder, 399p.
SPECTRAL_PURITY: 1b2_3_4_ # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns
|LIB_SPECTRA:||splib05a r 8477||0.2-3.0µm||200||g.s.=|
|LIB_SPECTRA:||splib06a r 25557||g.s.=|