Dumortierite
Origin: near Alpine, San Diego Co., California, U.S.A.
Sample size: 7x4x3cm with lilac, radial sprays in
matrix
This specimen has three divergent fans composed of acicular purple to lilac
colored crystals to 2.3 cm in
andalusite matrix
Origin: Dehesa, San Diego Co., California, United States
Eaton Collection
Sample size: small cabinet
Origin: Quartzite, Arizona, United States
Ex. DeVito Collection
Sample size: 7 x 6 x 2 cm
Origin: Hartmannsdorf, Chemnitz, Saxony, Germany
Picture size: 5 mm
Owner: Thomas Witzke
Blue elongated and flattened crystals and massive in matrix
Origin: Itrongay, Madagascar
Sample size: 3 x 4 to 4 x 7 cm
Gray blue dumortierite in quartzite
Origin: Harads, County of Norrbotten, Sweden
Sample size: 2 x 3 cm
This specimen of
andalusite has exposed fan-shaped sprays of lavender coloured
dumortierite. Under SW UV light the dumortierite fluoresces bluish violet.
Dehesa is one of the very few localities that has fluorescent dumortierite.
Origin: Dehesa, San Diego County, California, U.S.A.
Sample size: 7.5 x 5 x 2.5 cm
John Veevaert, Trinity Mineral Co
Origin: Champion mine (Champion Sillimanite Co. Quarry), Sacramento District,
Pershing Co., Nevada, U.S.A.
Ex. R.C. Erd collection
Sample size: 8 x 8.5 x 2.8 cm
