Cinnabar

Spectrum Details

Modality

NIR

Category

mineral

Material Type

Sulfide

Sample ID

HS133.3B

Collection Locality

Manhattan, Nevada

Spectral Purity

1c2d3d4d # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns

Composition / XRD

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

Sample Description

Trimorphous with Metacinnabar and Hypercinnabar. This sample is impure, and contains 0.6% iron by weight. This is enough iron to be present as the oxide, however, and to provide the characteristic absorptions near 0.85µm. The sample also contains bound hydrated water (1.4, 1.9, and 2.2-2.4µm absorptions) attached to the ferric oxide. Hunt, G.R., J.W. Salisbury, C.J. Lenhoff, 1971, Visible and Near-Infrared spectra of Minerals and Rocks: IV. Sulfides and Sulfates. Mod. Geol. 3, pp 1-14. IMAGE_OF_SAMPLE:

XRD Analysis

Cinnabar - major component No other identifiable components No sign of iron oxide Konnert, Judith and Marta Flohr, 1992, unpublished data, USGS Reston, VA.

X Units

cm⁻¹

Y Units

Absorbance

Data Points

2,126