Hewettite

Origin: Eagle's Nest Mine, Temple Mountain, San Rafael Swell, Utah, U.S.A.

Sample size: 5 x 8 cm, 5 x 11 cm

Photo courtesy of:

Diederik Visser

Rusty red fibrous crystals to less than 1 mm on black, sparse kazakhstanite

Dark red acicular micro crystals to less than 0.5 mm in a 5 x 3 mm area

Origin: Gold Quarry mine, Eureka Co., Nevada, United States

Sample size: 2 x 1 x 1 cm (top), 5 x 4.5 x 2 cm (bottom)

Photo courtesy of:

Tom Loomis

Origin: Gold Quarry Mine (Maggie claims), Maggie Creek District, Eureka Co., Nevada, U.S.A.

Sample size: 23 x 27 x 17 mm

Photo courtesy of:

Dan Weinrich

Optical properties/Thin sections

SEM images

TEM images

vibrational spectra description

IR spectra

Raman spectra

N-IR spectra

F-IR spectra

IES spectra