Microcline

Twinned microcline crystal with on one side smoky quartz, albite and lepidolite

Origin: Himalaya Mine, Mesa Grande, California
ex. Don Olson, Chris Korpi and Irv Brown Collections

Sample size: 25 x 14.6 x 14.3 cm

Origin: Hashupa, Shigar Valley, Gilgit, Pakistan

Sample size: 8.5 x 6.7 x 6.2 cm

Amazonite

Origin: Konso, Southern Nations Regional State, Ethiopia

Sample size: 9.4 x 7.2 x 5.8 cm (top), 5.6 x 4.3 x 3.4 cm (2nd/bottom row)

Amazonite with smoky quartz

Origin: Crystal Peak Region, Park Co., Colorado, U.S.A.

Sampel size: 5.4 x 2.8 x 3.3 cm

"White-cap" amazonite

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

Sample size: 4.5 x 3.0 x 2.2 cm

Photo courtesy of:

Rob Lavinsky

SEM images

TEM images

vibrational spectra description

IR spectra

N-IR spectra

F-IR spectra

IES spectra