DOCUMENTATION_FORMAT: MINERAL
SAMPLE_ID: GDS301
MINERAL_TYPE: Sorosilicate
MINERAL: Epidote (Epidote group)
FORMULA: Ca2(Al,Fe+3)3(SiO4)3(OH)
FORMULA_HTML: Ca2(Al,Fe+3)3(SiO4)3(OH)
COLLECTION_LOCALITY: Prince Wales Island, Green Monster Mtn. (purchased from Egger's Lapidary.
ORIGINAL_DONOR: U.S.G.S purchase
CURRENT_SAMPLE_LOCATION: U.S.G.S. Denver Spectroscopy Laboratory.
ULTIMATE_SAMPLE_LOCATION: U.S.G.S. Denver Spectroscopy Laboratory.
SAMPLE_DESCRIPTION:
Ground and sieved from GDS297.
IMAGE_OF_SAMPLE:
NO PHOTO
END_SAMPLE_DESCRIPTION.
XRD_ANALYSIS:
Not Available
END_XRD_ANALYSIS.
COMPOSITIONAL_ANALYSIS_TYPE: None # XRF, EPMA, ICP(Trace), WChem
COMPOSITION_TRACE: None
None
COMPOSITION_DISCUSSION:
None
END_COMPOSITION_DISCUSSION.
MICROSCOPIC_EXAMINATION:
None
END_MICROSCOPIC_EXAMINATION.
SPECTROSCOPIC_DISCUSSION:
Spectrum matches that of other epidote samples in the library (e.g. GDS26). This sample looks spectrally pure.
END_SPECTROSCOPIC_DISCUSSION.
SPECTRAL_PURITY: 1b2_3_4_ # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns