Samarium Oxide

Spectrum Details

Modality

FTIR

Category

man-made

Material Type

Oxide

Sample ID

GDS36

Collection Locality

REE Standard

Spectral Purity

1a2a3a4_ # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns

Composition / XRD

None # XRF, EPMA, ICP(Trace), WChem COMPOSITION_TRACE:

Sample Description

Spex standard 85.2% Sm Lot No. 07791 For a detailed discussion see: Rowan, Lawrence C., Kingston, Marguerite J., Crowley, James K., Spectral Reflectance of Carbonatites and Related Alkalic Igneous Rocks: Selected Samples from Four North American Localities, Economic Geology, Vol 81, 1986, pp. 857-871. IMAGE_OF_SAMPLE:

XRD Analysis

40 kV - 30 mA, 6.5-9.5 keV File:smox36.mdi, sm2o3.rd (smear mount on quartz plate) References: JC-PDS #06-0117, 13-0083, 13-0168, 15-0813, 19-1114, 25-0749, 31-1201, 33-1146, 42-1464, 43-1029, 43-1030 Found: 16 reflections Comment: Both patterns have high background and poor signal-to-noise ratio. The peaks are broad and appear ragged in the strip chart; there is no resolution of alpha1-alpha2. Pattern smox36.mdi could not be identified as a single Sm oxide, oxy-hydroxide, or carbonate, or any other phase by manual methods, including simple boolean searches of the PDF2 database. A second pattern was obtained from a new, automated system and processed using Philips software and Jade (MDI). The Philips search match yielded a mixture of Pm2O3 (34-536), cubic Sm2O3 (15-813), and Ba3ZrNb4O15. This result is suspect because promethium (Pm) does not occur naturally on earth and two reflections at 5.6 and 4.03 Angstroms, characteristic of Pm2O3, are not present. The Jade search-match routine accesses only minerals; it is possible to account for most of the reflections with mixtures of three or four minerals, but there is no reason to believe that these minerals bear any relationship to each other.

X Units

cm⁻¹

Y Units

Absorbance

Data Points

1,801