Galena

Spectrum Details

Modality

FTIR

Category

mineral

Material Type

Sulfide

Sample ID

HS37.3, HS37.3fg

Collection Locality

Galena, Kansas

Spectral Purity

1b2b3b4_ # Galena HS37.3 # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns SPECTRAL_PURITY: 1b2_3_4_ # Galena HS37.3fg # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns

Composition / XRD

# XRF, EPMA, ICP(Trace), WChem

Sample Description

Forms series with Clausthalite. Galena is usually pure, in the sense that substitution of other metal ions for lead is not very extensive. This sample appears quite pure, containing only a very minor amount of sphalerite. The largest size particles are opaque throughout the spectral region because of intense absorption in the conduction band which extends into the infrared. Hunt, G.R., J.W. Salisbury, C.J. Lenhoff, 1971, Visible and Near-Infrared spectra of Minerals and Rocks: IV. Sulphides and Sulphates. Mod. Geol. 3, pp 1-14. Grain size fractions are indicated by the extension after the sample number: .3 = 74-250 µm (compared to HS samples with the .3B extension, a grinding process was used which resulted in trace metal shavings from grinder) .3fg = ground to a finer grain size (unspecified) than the .3 sample

XRD Analysis

Pure galena. Konnert, Judith and Marta Flohr, 1992, unpublished data, USGS Reston, VA.

X Units

cm⁻¹

Y Units

Absorbance

Data Points

1,801