DOCUMENTATION_FORMAT: MINERAL

SAMPLE_ID: KLH503

MINERAL_TYPE: Phyllosilicate

MINERAL: Halloysite (Kaolinite-Serpentine group)

FORMULA: Al2Si2O5(OH)4

FORMULA_HTML: Al₂Si₂O₅(OH)₄

COLLECTION_LOCALITY: Tintic, UT

ORIGINAL_DONOR: Phoebe Hauff/USGS Sedimentary Mineralogy Laboratory

CURRENT_SAMPLE_LOCATION: CSES/CIRES, Univ. of CO, Boulder

ULTIMATE_SAMPLE_LOCATION: CSES/CIRES, Univ. of CO, Boulder

SAMPLE_DESCRIPTION:

Polymorphous with Dickite, Kaolinite, and Nacrite.

END_SAMPLE_DESCRIPTION.

XRD_ANALYSIS:

Halloysite + Quartz.

Kruse, F.A., and P.L. Hauff, eds., 1992, The IGCP-264 Spectral Properties Database. IUGS/UNESCO, Special Publication, 211 p., (in press).

END_XRD_ANALYSIS.

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

COMPOSITION_TRACE:

COMPOSITION_DISCUSSION:

END_COMPOSITION_DISCUSSION.

MICROSCOPIC_EXAMINATION:

avg gr sz = < 10 µm grain clumps are 450 µm in diameter

Sample contains 10 vol% quartz. G. Swayze.

END_MICROSCOPIC_EXAMINATION.

SPECTROSCOPIC_DISCUSSION:

END_SPECTROSCOPIC_DISCUSSION.

SPECTRAL_PURITY: 1_2_3_4_

LIB_SPECTRA_HED: where Wave Range Av_Rs_Pwr Comment

LIB_SPECTRA: splib04a r 1952 0.2-3.0µm 200 g.s.= 10 µm

LIB_SPECTRA: splib05a r ____ 0.2-3.0µm 200 g.s.=

LIB_SPECTRA: splib06a r ____ 1.5-25µm 250 g.s.=