Andradite

Variety melanite

Origin: San Benito County, California, U.S.A.

Ex. Gary Hansen collection

Sample size: 5.8 x 3.7 x 2.4 cm (top), 4.5 x 4.1 x 2.2 cm (2nd row), 8.2 x 4.6 x 3.1 cm (bottom)

Variety demantoid on schist

Origin: Sondria, Val Malenco, Italy

Ex. Gary Hansen collection

Sample size: 4.8 x 3.9 x 3.9 cm

Variety demantoid

Origin: Eden Mills, Vermont, U.S.A.

Ex. Gary Hansen collection

Sample size: 4.1 x 2.5 x 1.2 cm

Variety melanite

Origin: Lisbon, New Hampshire, U.S.A.

Ex. Gary Hansen collection

Sample size: 10 x 5.8 x 3 cm

Origin: Graham Co., Arizona, U.S.A.

Ex. Gary Hansen collection

Sample size: 8.5 x 5.3 x 3.8 cm

Ex. S. Nasser collection

Origin: Stanley Butte, Graham Co., Arizona, U.S.A.

Sample size: 3 x 2 x 2 cm (top), 6.6 x 5.0 x 3.2 cm (bottom)

Photo courtesy of:

Rob Lavinsky

SEM images

TEM images

vibrational spectra description

IR spectra

Raman spectra

N-IR spectra

F-IR spectra

IES spectra