Phlogopite

Spectrum Details

Modality

NIR

Category

mineral

Material Type

Phyllosilicate

Sample ID

GDS20 fine fr (NMNH124158)

Collection Locality

Burgess, Ontario (Cp sample)

Spectral Purity

1b2b3b4b # GDS20 fine fr # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns

Composition / XRD

# XRF, EPMA, ICP(Trace), WChem

Sample Description

Form series with Biotite. Sieve interval: coarse IMAGE_OF_SAMPLE:

XRD Analysis

"Unit cell parameters are: a = 0.531+/-0.002 nm, b = 0.922+/-0.003 nm, c = 1.022+/-0.003 nm, and beta = 100.00+/-0.03°, and the structure type is 1M (M.R. Ross, U.S. Geol. Survey, personal communication, 1982) determined by single crystal methods." Robie, R.A. and Hemingway, B.S., 1984, Heat capacities and entropies of phlogopite (KMg3[AlSi3O10](OH)2) and paragonite (NaAl2[AlSi3O10](OH)2) between 5 and 900 K and estimates of the enthalpies and Gibbs free energies of formation. American Mineralogist, v. 69, pp.858-868.

X Units

cm⁻¹

Y Units

Absorbance

Data Points

2,126