Goethite

Goethite on smoky quartz

Origin: Pikes Peak Pluton Area, Park Co, Colorado, U.S.A.

Sample size: 8 x 3.8 x 2.5 cm (top), 9 x 6 x 5 cm (2nd/3rd row), 10 x 5.5 x 5 cm (bottom)

Origin: Crystal Creek, Lake George, Park Co., Colorado, U.S.A.

Sample size: 8.5 x 5.4 x 4.3 cm

Origin: Graves Mountain, Lincoln Co., Georgia, U.S.A.

Ex. Marty Lewadny collection

Sample size: 6.0 x 3.8 x 1.9 cm

Photo courtesy of:

Rob Lavinsky

SEM images

TEM images

vibrational spectra description

IR spectra

Raman spectra

N-IR spectra

F-IR spectra

IES spectra