- Modality
- NIR
- Category
- mineral
- Material Type
- Nesosilicate
- Sample ID
- Cameron_Cone_#42
- Collection Locality
- Volyn, U.S.S.R.
- Spectral Purity
- 1b2b3b4_ # Cameron_Cone_#42 # 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
- Most of the (OH^-) in topaz is generally replaced by F^-, the maximum fluorine content being 20.7%. Hurlbut, C.S., and C. Klein, 1977, Manual of Mineralogy, 19th Ed. John Wiley and Sons, New York, New York, 353p. Topaz is commonly found as a vapor phase or hydrothermal crystallization product in three principal geologic associations: rhyolites; pegmatites and greisens; and hydrothermal veins. The mineral also occurs as a liquidus phase in ongonites and some rhyolites. Foord, E.L., L. Jackson, J. Taggart, J. Crock, and T.V.V. King, 1988, Environment of Crystallization of Topaz as Determined From Crystal Chemistry and Infrared Spectra. Program and Abstracts Annual GSA Meeting, October 31-November 3, 1988, Denver CO, A224,#4128. IMAGE_OF_SAMPLE: NO PHOTO
- X Units
- cm⁻¹
- Y Units
- Absorbance
- Data Points
- 2,126